Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Boston, MA
Issued by NWS Boston, MA
174
FNUS51 KBOX 180809
FWFBOX
Fire Weather Planning Forecast for Southern New England
National Weather Service Boston/Norton MA
409 AM EDT Tue Aug 18 2026
.DISCUSSION...
Winds remaining light today with drier conditions in the
afternoon. However, a spot shower in parts of central MA cannot
be entirely ruled out. Highs in the low to mid 80s today with
minimum relative humidity values generally between 60 and
80 percent. Minimum relative humidity values Wednesday fall even
further with even drier conditions, reaching 40 to 55 percent for
most (60 to 80 percent for the Cape and Islands).
.Outlook...Wednesday Night through Saturday...
Mainly dry weather with seasonable temperatures through much of
the week. The best chance of a few showers/thunderstorms will be
on Thursday.
MAZ015-182000-
Suffolk MA-
Including the city of Boston
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers None None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+5) 66 (-1) 87
RH % (24h trend) 76 (+8) 100 (0) 43
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) E 5 Lgt/Var SW 5
Precip Amount 0.01 0.00 0.00
Precip Duration 0
Precip Begin 2 PM
Precip End 6 PM
Mixing Hgt (ft-AGL) 2500 420 6020
Transport Wnd (kts) NE 7 S 4 SW 9
Vent Rate (kt-ft) 17500 1680 54180
Max ADI Early 13 Gen Poor 8 Poor 35 Fair
Max ADI Late 16 Gen Poor 3 Very Poor 63 Good
Max LVORI Early 4 9 1
Max LVORI Late 4 9 1
Min Vsby Early 2 Fog 8 6 Fog
Min Vsby Late 9 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. West
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph, becoming east around
5 mph in the afternoon.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. South winds around 5 mph, becoming northwest after
midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
Highs in the upper 70s. Northeast winds 5 to 10 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds 5 to 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southeast winds around 5 mph, becoming southwest
after midnight.
.MONDAY...Mostly sunny with a chance of showers. Highs in the
upper 70s. Southwest winds 5 to 10 mph.
$$
MAZ016-182000-
Eastern Norfolk MA-
Including the city of Quincy
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 79 (+3) 64 (-2) 88
RH % (24h trend) 76 (+7) 100 (0) 43
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) NE 5 Lgt/Var SW 5
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 2640 430 6130
Transport Wnd (kts) NE 6 S 5 W 9
Vent Rate (kt-ft) 15840 2150 55170
Max ADI Early 14 Gen Poor 9 Poor 40 Fair
Max ADI Late 18 Gen Poor 3 Very Poor 74 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 1 Fog 8 5 Fog
Min Vsby Late 9 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph, becoming east in the
afternoon.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. South winds around 5 mph, becoming northwest after
midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. Northeast winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Southeast winds around 5 mph, becoming southwest
after midnight.
.MONDAY...Mostly sunny. Highs around 80. Southwest winds 5 to
10 mph.
$$
MAZ013-182000-
Western Norfolk MA-
Including the cities of Foxborough and Norwood
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 81 (+6) 63 (-2) 86
RH % (24h trend) 74 (+3) 100 (0) 43
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 5
Precip Amount 0.01 0.02 0.00
Precip Duration 0 0
Precip Begin 3 PM Continuing
Precip End Continuing 9 PM
Mixing Hgt (ft-AGL) 3620 430 6770
Transport Wnd (kts) N 5 W 6 W 11
Vent Rate (kt-ft) 18100 2580 74470
Max ADI Early 19 Gen Poor 11 Poor 49 Gen Good
Max ADI Late 26 Fair 3 Very Poor 100 Good
Max LVORI Early 3 10 1
Max LVORI Late 3 10 1
Min Vsby Early 1 Fog 9 6 Fog
Min Vsby Late 9 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. West winds around 5 mph, becoming northwest after
midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Highs around 80. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. Northeast winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows
around 60. Southeast winds around 5 mph, becoming southwest after
midnight.
.MONDAY...Mostly sunny. Highs around 80. West winds around 5 mph.
$$
MAZ014-182000-
Southeast Middlesex MA-
Including the city of Cambridge
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers None None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+4) 64 (-2) 87
RH % (24h trend) 76 (+21) 100 (0) 43
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 5
Precip Amount 0.01 0.00 0.00
Precip Duration 0
Precip Begin 2 PM
Precip End 6 PM
Mixing Hgt (ft-AGL) 3180 420 6570
Transport Wnd (kts) NE 5 S 4 W 11
Vent Rate (kt-ft) 15900 1680 72270
Max ADI Early 16 Gen Poor 13 Gen Poor 51 Gen Good
Max ADI Late 22 Fair 3 Very Poor 86 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 2 Fog 9 6 Fog
Min Vsby Late 9 6 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 60s. West
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
mid 80s. Northwest winds around 5 mph, becoming southeast around
5 mph in the afternoon.
.THURSDAY NIGHT...Partly cloudy with a chance of showers. Lows in
the lower 60s. South winds around 5 mph, becoming northwest after
midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Highs around 80. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. East winds around 5 mph, becoming southwest around
5 mph after midnight.
.MONDAY...Mostly sunny with a chance of showers. Highs around 80.
West winds 5 to 10 mph.
$$
MAZ007-182000-
Eastern Essex MA-
Including the city of Gloucester
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 77 (+2) 63 (-3) 86
RH % (24h trend) 79 (+13) 100 (0) 45
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var S 5
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 2140 410 4920
Transport Wnd (kts) NE 6 S 4 SW 9
Vent Rate (kt-ft) 12840 1640 44280
Max ADI Early 13 Gen Poor 8 Poor 22 Fair
Max ADI Late 13 Gen Poor 3 Very Poor 39 Fair
Max LVORI Early 5 10 2
Max LVORI Late 5 10 2
Min Vsby Early 1 Fog 6 Fog 6 Fog
Min Vsby Late 8 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 60s.
Southwest winds around 5 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Northwest winds
around 5 mph, becoming east in the afternoon.
.THURSDAY NIGHT...Mostly cloudy. Lows in the lower 60s. South
winds around 5 mph, becoming northwest after midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
Highs in the upper 70s. Northeast winds 5 to 10 mph.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A chance of
showers. Lows in the lower 60s. Highs in the upper 70s. Northeast
winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds 5 to 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. East winds around 5 mph, becoming southwest after
midnight.
.MONDAY...Mostly sunny with a chance of showers. Highs in the
upper 70s. Southwest winds 5 to 10 mph.
$$
MAZ006-182000-
Western Essex MA-
Including the city of Lawrence
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Showers None None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+4) 62 (-4) 86
RH % (24h trend) 76 (+10) 100 (0) 43
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.01 0.00 0.00
Precip Duration 1
Precip Begin 1 PM
Precip End 6 PM
Mixing Hgt (ft-AGL) 2860 420 6800
Transport Wnd (kts) N 4 S 4 W 11
Vent Rate (kt-ft) 11440 1680 74800
Max ADI Early 16 Gen Poor 13 Gen Poor 45 Gen Good
Max ADI Late 16 Gen Poor 3 Very Poor 89 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 2 Fog 9 6 Fog
Min Vsby Late 9 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s. West winds
around 5 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Northwest winds
around 5 mph, becoming east in the afternoon.
.THURSDAY NIGHT...Partly cloudy. Lows around 60. South winds
around 5 mph, becoming northwest after midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows around 60. Highs
around 80. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. Northeast winds around 5 mph.
.SUNDAY...Partly sunny with showers likely. Highs in the upper
70s. Northeast winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows
around 60. East winds around 5 mph, becoming southwest after
midnight.
.MONDAY...Mostly sunny with a chance of showers. Highs around 80.
Southwest winds 5 to 10 mph.
$$
MAZ005-182000-
Central Middlesex MA-
Including the cities of Framingham and Lowell
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Showers None None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 81 (+6) 62 (-3) 86
RH % (24h trend) 74 (+7) 100 (0) 43
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.01 0.00 0.00
Precip Duration 1
Precip Begin 1 PM
Precip End 6 PM
Mixing Hgt (ft-AGL) 3540 420 6730
Transport Wnd (kts) NW 4 SW 5 W 11
Vent Rate (kt-ft) 14160 2100 74030
Max ADI Early 14 Gen Poor 13 Gen Poor 49 Gen Good
Max ADI Late 20 Gen Poor 3 Very Poor 99 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 1 Fog 9 5 Fog
Min Vsby Late 9 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s. West winds
around 5 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Northwest winds
around 5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows around 60. West winds
around 5 mph, becoming northwest after midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows around 60. Highs
in the lower 80s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. Northeast winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows around 60. Highs in the upper 70s. Southwest winds around
5 mph.
.MONDAY...Mostly sunny. Highs around 80. West winds around 5 mph.
$$
MAZ012-182000-
Southern Worcester MA-
Including the cities of Milford and Worcester
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers None
Chance Precip (%) 30 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+8) 61 (-3) 85
RH % (24h trend) 74 (-5) 100 (0) 48
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.01 0.01 0.00
Precip Duration 1 0
Precip Begin 1 PM Continuing
Precip End Continuing 9 PM
Mixing Hgt (ft-AGL) 3930 380 6370
Transport Wnd (kts) NW 5 S 5 W 11
Vent Rate (kt-ft) 19650 1900 70070
Max ADI Early 15 Gen Poor 13 Gen Poor 52 Gen Good
Max ADI Late 28 Fair 3 Very Poor 87 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 2 Fog 9 5 Fog
Min Vsby Late 9 6 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. West winds
around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Partly cloudy with a chance of showers. Lows
around 60. Northwest winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows around 60. Highs
around 80. East winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows around 60. Highs in the upper 70s. Southwest winds around
5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
MAZ004-182000-
Northern Worcester MA-
Including the cities of Barre and Fitchburg
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers Showers None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 81 (+7) 58 (-6) 83
RH % (24h trend) 67 (-7) 100 (0) 47
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var W 5
Precip Amount 0.01 0.01 0.00
Precip Duration 1 0
Precip Begin 11 AM Continuing
Precip End Continuing 8 PM
Mixing Hgt (ft-AGL) 3940 400 6070
Transport Wnd (kts) W 5 SW 4 W 11
Vent Rate (kt-ft) 19700 1600 66770
Max ADI Early 12 Poor 16 Gen Poor 44 Gen Good
Max ADI Late 26 Fair 3 Very Poor 82 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 1 Fog 9 3 Fog
Min Vsby Late 9 2 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s. West
winds around 5 mph.
.THURSDAY...Mostly sunny. Highs around 80. Northwest winds around
5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northwest
winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s.
Highs around 80. Northeast winds around 5 mph.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A chance of
showers. Lows in the upper 50s. Highs in the upper 70s. East
winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows in the upper 50s. Highs in the mid 70s. Southwest winds
around 5 mph.
.MONDAY...Mostly sunny. Highs in the mid 70s. West winds 5 to
10 mph.
$$
MAZ026-182000-
Northern Middlesex MA-
Including the city of Ayer
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Showers Showers None
Chance Precip (%) 30 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+7) 60 (-5) 86
RH % (24h trend) 76 (+3) 100 (0) 46
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.03 0.01 0.00
Precip Duration 1 0
Precip Begin 11 AM Continuing
Precip End Continuing 8 PM
Mixing Hgt (ft-AGL) 3260 420 6520
Transport Wnd (kts) W 4 SW 4 W 11
Vent Rate (kt-ft) 13040 1680 71720
Max ADI Early 12 Poor 12 Poor 42 Gen Good
Max ADI Late 18 Gen Poor 3 Very Poor 89 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 1 Fog 9 3 Fog
Min Vsby Late 9 2 Fog 9
Sunshine Hours N/A N/A N/A
CWR 20 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s. West
winds around 5 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Northwest winds
around 5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northwest
winds around 5 mph.
.FRIDAY...Mostly sunny. Highs in the lower 80s. North winds
around 5 mph, becoming east in the afternoon.
.FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s. Southeast
winds around 5 mph in the evening, becoming light and variable.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
upper 50s. East winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows in the upper 50s. Highs in the upper 70s. Southwest winds
around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
MAZ002-182000-
Western Franklin MA-
Including the city of Charlemont
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Mclear Pcldy
Precip Type Showers None None
Chance Precip (%) 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+6) 55 (-8) 82
RH % (24h trend) 60 (-16) 100 (0) 46
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.01 0.00 0.00
Precip Duration 1
Precip Begin 11 AM
Precip End 6 PM
Mixing Hgt (ft-AGL) 4310 420 5550
Transport Wnd (kts) NW 5 NW 5 W 11
Vent Rate (kt-ft) 21550 2100 61050
Max ADI Early 21 Fair 17 Gen Poor 51 Gen Good
Max ADI Late 35 Fair 3 Very Poor 76 Good
Max LVORI Early 3 8 1
Max LVORI Late 3 8 1
Min Vsby Early 1 Fog 9 6 Fog
Min Vsby Late 9 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the upper 50s. West
winds around 5 mph.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Lows in the upper
50s. Highs in the upper 70s. Northwest winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the mid 50s.
Highs in the upper 70s. North winds around 5 mph.
.SATURDAY...Mostly sunny with a chance of showers. Highs in the
mid 70s. Northeast winds around 5 mph, becoming southeast in the
afternoon.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 50s. East winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows in the mid 50s. Highs in the mid 70s. West winds around
5 mph.
.MONDAY...Mostly sunny with a chance of showers. Highs in the
lower 70s. West winds around 5 mph.
$$
MAZ003-182000-
Eastern Franklin MA-
Including the cities of Greenfield and Orange
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type Showers None None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+7) 58 (-7) 85
RH % (24h trend) 64 (-10) 100 (0) 45
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.02 0.00 0.00
Precip Duration 1
Precip Begin 11 AM
Precip End 6 PM
Mixing Hgt (ft-AGL) 4360 420 5760
Transport Wnd (kts) NW 5 NW 4 W 10
Vent Rate (kt-ft) 21800 1680 57600
Max ADI Early 14 Gen Poor 15 Gen Poor 39 Fair
Max ADI Late 31 Fair 2 Very Poor 79 Good
Max LVORI Early 3 10 1
Max LVORI Late 3 10 1
Min Vsby Early 1 Fog 9 2 Fog
Min Vsby Late 9 2 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s. West
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northwest
winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s.
Highs around 80. Northeast winds around 5 mph.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A chance of
showers. Lows in the upper 50s. Highs in the upper 70s. Northeast
winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows in the upper 50s. Highs in the upper 70s. Southwest winds
around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
MAZ008-182000-
Western Hampshire MA-
Including the city of Chesterfield
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers None None
Chance Precip (%) 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+6) 56 (-8) 82
RH % (24h trend) 62 (-16) 100 (0) 48
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 4450 430 5520
Transport Wnd (kts) W 6 NW 7 W 10
Vent Rate (kt-ft) 26700 3010 55200
Max ADI Early 21 Fair 21 Fair 55 Gen Good
Max ADI Late 36 Fair 4 Very Poor 75 Good
Max LVORI Early 3 7 1
Max LVORI Late 3 7 1
Min Vsby Early 2 Fog 9 7
Min Vsby Late 9 6 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows around 60. West winds
around 5 mph.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Lows in the upper
50s. Highs in the upper 70s. Northwest winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s.
Highs in the upper 70s. North winds around 5 mph.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A chance of
showers. Lows in the upper 50s. Highs in the mid 70s. East winds
around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely and
a chance of thunderstorms. Lows in the mid 50s. Highs in the mid
70s. West winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the mid 70s. West winds 5 to
10 mph.
$$
MAZ010-182000-
Eastern Hampshire MA-
Including the cities of Amherst and Northampton
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers None None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 83 (+6) 59 (-6) 86
RH % (24h trend) 63 (-8) 100 (0) 45
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.01 0.00 0.00
Precip Duration 1
Precip Begin 1 PM
Precip End 6 PM
Mixing Hgt (ft-AGL) 4130 420 5980
Transport Wnd (kts) NW 5 NW 3 W 9
Vent Rate (kt-ft) 20650 1260 53820
Max ADI Early 14 Gen Poor 16 Gen Poor 35 Fair
Max ADI Late 29 Fair 2 Very Poor 74 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 1 Fog 9 4 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s. West
winds around 5 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Northwest winds
around 5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northwest
winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s.
Highs in the lower 80s. Northeast winds around 5 mph.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A chance of
showers. Lows around 60. Highs in the upper 70s. Northeast winds
around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows in the upper 50s. Highs in the upper 70s. Southwest winds
around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
MAZ009-182000-
Western Hampden MA-
Including the city of Blandford
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Mclear Mclear
Precip Type None None None
Chance Precip (%) 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+5) 57 (-7) 83
RH % (24h trend) 64 (-17) 96 (-4) 48
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 4440 420 5390
Transport Wnd (kts) W 6 NW 4 W 10
Vent Rate (kt-ft) 26640 1680 53900
Max ADI Early 22 Fair 23 Fair 54 Gen Good
Max ADI Late 41 Gen Good 4 Very Poor 75 Good
Max LVORI Early 3 7 1
Max LVORI Late 3 7 1
Min Vsby Early 3 Fog 9 8
Min Vsby Late 9 8 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s. West
winds around 5 mph.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Lows 57 to 62.
Highs in the upper 70s. Northwest winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s.
Highs in the upper 70s. North winds around 5 mph.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A chance of
showers. Lows in the upper 50s. Highs in the upper 70s. East
winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely and
a chance of thunderstorms. Lows in the upper 50s. Highs in the
mid 70s. West winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the mid 70s. West winds 5 to
10 mph.
$$
MAZ011-182000-
Eastern Hampden MA-
Including the city of Springfield
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Mclear Mclear
Precip Type Showers None None
Chance Precip (%) 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 84 (+8) 60 (-5) 86
RH % (24h trend) 61 (-10) 100 (0) 42
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 4260 410 5960
Transport Wnd (kts) W 5 NW 4 W 10
Vent Rate (kt-ft) 21300 1640 59600
Max ADI Early 12 Poor 16 Gen Poor 35 Fair
Max ADI Late 30 Fair 2 Very Poor 75 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 1 Fog 9 5 Fog
Min Vsby Late 9 6 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s. West
winds around 5 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Northwest winds
around 5 mph.
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northwest
winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows in the upper 50s.
Highs in the lower 80s. Northeast winds around 5 mph.
.SATURDAY AND SATURDAY NIGHT...Mostly cloudy. A chance of
showers. Lows around 60. Highs around 80. Northeast winds around
5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows in the upper 50s. Highs in the upper 70s. Southwest winds
around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
CTZ002-182000-
Hartford CT-
Including the cities of Hartford and Windsor Locks
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Mclear Mclear
Precip Type None None None
Chance Precip (%) 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 84 (+7) 61 (-5) 87
RH % (24h trend) 61 (-10) 100 (0) 42
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 4190 390 6160
Transport Wnd (kts) W 5 NW 5 W 10
Vent Rate (kt-ft) 20950 1950 61600
Max ADI Early 14 Gen Poor 17 Gen Poor 39 Fair
Max ADI Late 32 Fair 3 Very Poor 79 Good
Max LVORI Early 3 8 1
Max LVORI Late 3 8 1
Min Vsby Early 2 Fog 9 7
Min Vsby Late 9 7 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s. West winds
around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows
around 60. Northwest winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows around 60. Highs
in the lower 80s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with a chance of showers
and thunderstorms. Lows around 60. Highs in the upper 70s.
Southwest winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
CTZ003-182000-
Tolland CT-
Including the cities of Union and Vernon
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type None None None
Chance Precip (%) 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+7) 60 (-5) 85
RH % (24h trend) 67 (-7) 100 (0) 45
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var W 5
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 3890 390 6150
Transport Wnd (kts) W 5 W 5 W 10
Vent Rate (kt-ft) 19450 1950 61500
Max ADI Early 11 Poor 16 Gen Poor 41 Gen Good
Max ADI Late 29 Fair 3 Very Poor 84 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 1 Fog 9 5 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 50s. West winds around 5 mph, becoming north after
midnight.
.FRIDAY AND FRIDAY NIGHT...Partly cloudy. Lows around 60. Highs
around 80. East winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly cloudy with showers likely.
Lows around 60. Highs in the upper 70s. Southwest winds around
5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
CTZ004-182000-
Windham CT-
Including the cities of Putnam and Willimantic
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers None None
Chance Precip (%) 20 20
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+8) 61 (-4) 85
RH % (24h trend) 74 (-5) 100 (0) 49
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 3940 380 6290
Transport Wnd (kts) NW 5 W 5 W 10
Vent Rate (kt-ft) 19700 1900 62900
Max ADI Early 14 Gen Poor 14 Gen Poor 47 Gen Good
Max ADI Late 27 Fair 3 Very Poor 86 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 2 Fog 9 6 Fog
Min Vsby Late 9 6 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows
around 60. West winds around 5 mph, becoming northwest after
midnight.
.FRIDAY...Partly sunny. Highs around 80. Northeast winds around
5 mph.
.FRIDAY NIGHT...Partly cloudy. Lows around 60. East winds around
5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph, becoming southeast around
5 mph in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 50s. Southwest winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
RIZ001-182000-
Northwest Providence RI-
Including the cities of Foster and Smithfield
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers None
Chance Precip (%) 20 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+8) 62 (-3) 84
RH % (24h trend) 74 (-5) 100 (0) 48
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var Lgt/Var
Precip Amount 0.01 0.01 0.00
Precip Duration 0 0
Precip Begin 3 PM Continuing
Precip End Continuing 9 PM
Mixing Hgt (ft-AGL) 4160 420 6600
Transport Wnd (kts) NW 5 W 6 W 11
Vent Rate (kt-ft) 20800 2520 72600
Max ADI Early 19 Gen Poor 14 Gen Poor 48 Gen Good
Max ADI Late 32 Fair 3 Very Poor 92 Good
Max LVORI Early 3 9 1
Max LVORI Late 3 9 1
Min Vsby Early 2 Fog 9 6 Fog
Min Vsby Late 9 6 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Northwest winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the lower 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows
around 60. South winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds around
5 mph.
$$
RIZ002-182000-
Southeast Providence RI-
Including the city of Providence
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers None
Chance Precip (%) 20 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+7) 64 (-2) 85
RH % (24h trend) 74 (-7) 100 (0) 50
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 5
Precip Amount 0.01 0.02 0.00
Precip Duration 0 0
Precip Begin 3 PM Continuing
Precip End Continuing 9 PM
Mixing Hgt (ft-AGL) 3800 430 6850
Transport Wnd (kts) NW 5 W 6 W 10
Vent Rate (kt-ft) 19000 2580 68500
Max ADI Early 21 Fair 13 Gen Poor 47 Gen Good
Max ADI Late 27 Fair 3 Very Poor 88 Good
Max LVORI Early 3 9 1
Max LVORI Late 3 9 1
Min Vsby Early 2 Fog 9 6 Fog
Min Vsby Late 9 6 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. West winds around 5 mph.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the lower 60s.
Highs around 80. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph, becoming southeast around
5 mph in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. South winds around 5 mph.
.MONDAY...Mostly sunny. Highs around 80. Southwest winds 5 to
10 mph.
$$
RIZ003-182000-
Western Kent RI-
Including the cities of Coventry and West Greenwich
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers None
Chance Precip (%) 20 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+9) 63 (-3) 83
RH % (24h trend) 74 (-13) 100 (0) 53
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 5
Precip Amount 0.01 0.02 0.00
Precip Duration 0 0
Precip Begin 3 PM Continuing
Precip End Continuing 8 PM
Mixing Hgt (ft-AGL) 3970 400 6510
Transport Wnd (kts) NW 5 W 6 W 11
Vent Rate (kt-ft) 19850 2400 71610
Max ADI Early 19 Gen Poor 13 Gen Poor 46 Gen Good
Max ADI Late 27 Fair 3 Very Poor 85 Good
Max LVORI Early 4 10 1
Max LVORI Late 4 10 1
Min Vsby Early 2 Fog 9 5 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. West winds around 5 mph, becoming northwest after
midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the lower 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph, becoming southeast around
5 mph in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Southwest winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
RIZ004-182000-
Eastern Kent RI-
Including the cities of East Greenwich, Warwick, and West Warwick
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers None
Chance Precip (%) 20 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+7) 65 (-2) 85
RH % (24h trend) 74 (-5) 100 (0) 50
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 5
Precip Amount 0.01 0.03 0.00
Precip Duration 0 0
Precip Begin 3 PM Continuing
Precip End Continuing 9 PM
Mixing Hgt (ft-AGL) 3690 410 6600
Transport Wnd (kts) NW 5 W 6 W 10
Vent Rate (kt-ft) 18450 2460 66000
Max ADI Early 21 Fair 11 Poor 41 Gen Good
Max ADI Late 22 Fair 3 Very Poor 79 Good
Max LVORI Early 3 9 1
Max LVORI Late 3 9 1
Min Vsby Early 2 Fog 9 6 Fog
Min Vsby Late 9 5 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph, becoming southwest
around 5 mph in the afternoon.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. West winds around 5 mph, becoming northwest after
midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the lower 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph, becoming southeast in the
afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Southwest winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. Southwest winds
5 to 10 mph.
$$
RIZ005-182000-
Bristol RI-
Including the city of Bristol
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers Showers None
Chance Precip (%) 20 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 81 (+6) 67 (-1) 84
RH % (24h trend) 77 (-2) 100 (0) 55
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 6
Precip Amount 0.01 0.02 0.00
Precip Duration 0 0
Precip Begin 4 PM Continuing
Precip End Continuing 9 PM
Mixing Hgt (ft-AGL) 3550 420 5980
Transport Wnd (kts) N 5 SW 6 SW 10
Vent Rate (kt-ft) 17750 2520 59800
Max ADI Early 23 Fair 10 Poor 23 Fair
Max ADI Late 27 Fair 3 Very Poor 67 Good
Max LVORI Early 4 9 2
Max LVORI Late 4 9 2
Min Vsby Early 2 Fog 9 5 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph, becoming southwest around
5 mph in the afternoon.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southwest winds around 5 mph, becoming northwest
after midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the mid 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. Northeast winds around 5 mph, becoming southeast in the
afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. South winds 5 to 10 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. Southwest winds
5 to 10 mph.
$$
RIZ006-182000-
Washington RI-
Including the cities of Narragansett and Westerly
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type Showers None None
Chance Precip (%) 20 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 81 (+7) 64 (-2) 84
RH % (24h trend) 77 (-1) 100 (0) 53
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 6
Precip Amount 0.01 0.00 0.00
Precip Duration 0
Precip Begin 3 PM
Precip End 6 PM
Mixing Hgt (ft-AGL) 3260 410 5280
Transport Wnd (kts) NW 5 W 6 SW 10
Vent Rate (kt-ft) 16300 2460 52800
Max ADI Early 17 Gen Poor 11 Poor 32 Fair
Max ADI Late 18 Gen Poor 4 Very Poor 56 Gen Good
Max LVORI Early 4 9 2
Max LVORI Late 4 9 2
Min Vsby Early 1 Fog 8 5 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 10 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Southwest winds around 5 mph, becoming northwest
after midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the lower 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds 5 to 10 mph, becoming south in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Southwest winds 5 to 10 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 5 to
10 mph.
$$
RIZ007-182000-
Newport RI-
Including the city of Newport
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type None None None
Chance Precip (%) 20 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+6) 67 (-1) 83
RH % (24h trend) 77 (+6) 100 (0) 55
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 7
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 2570 410 3280
Transport Wnd (kts) N 5 SW 6 SW 9
Vent Rate (kt-ft) 12850 2460 29520
Max ADI Early 19 Gen Poor 10 Poor 17 Gen Poor
Max ADI Late 15 Gen Poor 4 Very Poor 31 Fair
Max LVORI Early 4 8 3
Max LVORI Late 4 8 3
Min Vsby Early 1 Fog 7 5 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows around 70. Southwest winds
5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. West winds 5 to
10 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southwest winds 5 to 10 mph, becoming northwest
after midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the mid 60s.
Highs in the upper 70s. Northeast winds 5 to 10 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds 5 to 10 mph, becoming south in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southwest winds 5 to 10 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. Southwest winds
10 to 15 mph.
$$
RIZ008-182000-
Block Island RI-
Including the city of New Shoreham
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Mclear
Precip Type None None None
Chance Precip (%) 10 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 77 (+2) 69 (+1) 79
RH % (24h trend) 87 (+9) 97 (-3) 74
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var SW 5 SW 7
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 1140 490 890
Transport Wnd (kts) N 6 SW 8 SW 7
Vent Rate (kt-ft) 6840 3920 6230
Max ADI Early 14 Gen Poor 10 Poor 8 Poor
Max ADI Late 10 Poor 6 Very Poor 14 Gen Poor
Max LVORI Early 6 6 4
Max LVORI Late 6 6 4
Min Vsby Early 3 Fog 5 Fog 5 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 70s. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the upper 70s. West winds
around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. Southwest winds around 5 mph, becoming northwest
after midnight.
.FRIDAY THROUGH SATURDAY...Mostly cloudy with a chance of
showers. Lows in the upper 60s. Highs in the mid 70s. East winds
5 to 10 mph.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy with showers likely.
Lows in the upper 60s. Highs in the upper 70s. South winds 5 to
10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. Southwest winds 5 to 10 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. West winds 10 to
15 mph.
$$
MAZ017-182000-
Northern Bristol MA-
Including the city of Taunton
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None Showers None
Chance Precip (%) 20 20 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 82 (+7) 64 (-2) 86
RH % (24h trend) 74 (-2) 100 (0) 48
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 5
Precip Amount 0.00 0.02 0.00
Precip Duration 0
Precip Begin 6 PM
Precip End 9 PM
Mixing Hgt (ft-AGL) 3610 420 7650
Transport Wnd (kts) NW 5 SW 6 W 11
Vent Rate (kt-ft) 18050 2520 84150
Max ADI Early 25 Fair 11 Poor 46 Gen Good
Max ADI Late 26 Fair 3 Very Poor 98 Good
Max LVORI Early 3 9 1
Max LVORI Late 3 9 1
Min Vsby Early 1 Fog 9 5 Fog
Min Vsby Late 9 4 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 10 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. West winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. West winds around 5 mph, becoming northwest after
midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the lower 60s.
Highs around 80. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. South winds around 5 mph.
.MONDAY...Mostly sunny. Highs around 80. Southwest winds around
5 mph.
$$
MAZ018-182000-
Western Plymouth MA-
Including the city of Brockton
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+5) 63 (-3) 86
RH % (24h trend) 74 (+4) 100 (0) 46
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 5
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 3450 430 8140
Transport Wnd (kts) N 7 SW 6 W 11
Vent Rate (kt-ft) 24150 2580 89540
Max ADI Early 18 Gen Poor 10 Poor 45 Gen Good
Max ADI Late 31 Fair 3 Very Poor 101 Very Good
Max LVORI Early 3 10 1
Max LVORI Late 3 10 1
Min Vsby Early 1 Fog 8 4 Fog
Min Vsby Late 9 3 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Southwest
winds around 5 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph, becoming south around
5 mph in the afternoon.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. Southwest winds around 5 mph, becoming northwest
after midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the lower 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
lower 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the lower 60s. South winds around 5 mph.
.MONDAY...Mostly sunny. Highs around 80. Southwest winds around
5 mph.
$$
MAZ019-182000-
Eastern Plymouth MA-
Including the city of Plymouth
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 77 (+3) 63 (-4) 85
RH % (24h trend) 76 (+5) 100 (0) 46
20ft Wnd AM(mph) N 5 Lgt/Var
20ft Wnd PM(mph) NE 5 Lgt/Var SW 5
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 2350 410 4790
Transport Wnd (kts) N 8 SW 6 SW 8
Vent Rate (kt-ft) 18800 2460 38320
Max ADI Early 16 Gen Poor 8 Poor 25 Fair
Max ADI Late 22 Fair 3 Very Poor 41 Gen Good
Max LVORI Early 5 9 2
Max LVORI Late 5 9 2
Min Vsby Early 0 Fog 5 Fog 4 Fog
Min Vsby Late 8 3 Fog 8
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Northwest winds around 5 mph, becoming east around
5 mph in the afternoon.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. South winds around 5 mph, becoming northwest after
midnight.
.FRIDAY...Mostly sunny. Highs in the mid 70s. Northeast winds
5 to 10 mph.
.FRIDAY NIGHT...Mostly cloudy. Lows in the mid 60s. East winds
around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
mid 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds around 5 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds 5 to 10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. South winds around 5 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. Southwest winds
5 to 10 mph.
$$
MAZ020-182000-
Southern Bristol MA-
Including the cities of Fall River and New Bedford
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 81 (+6) 65 (-2) 86
RH % (24h trend) 74 (+8) 100 (0) 53
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 7
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 3670 420 6190
Transport Wnd (kts) N 5 SW 6 SW 11
Vent Rate (kt-ft) 18350 2520 68090
Max ADI Early 19 Gen Poor 12 Poor 35 Fair
Max ADI Late 29 Fair 3 Very Poor 65 Good
Max LVORI Early 4 9 2
Max LVORI Late 4 9 2
Min Vsby Early 1 Fog 7 4 Fog
Min Vsby Late 9 3 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Southwest winds
5 to 10 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southwest winds 5 to 10 mph, becoming northwest
after midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the mid 60s.
Highs in the upper 70s. Northeast winds 5 to 10 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds 5 to 10 mph, becoming south in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southwest winds 5 to 10 mph.
.MONDAY...Mostly sunny. Highs in the upper 70s. Southwest winds
10 to 15 mph.
$$
MAZ021-182000-
Southern Plymouth MA-
Including the city of Mattapoisett
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 80 (+5) 65 (-2) 86
RH % (24h trend) 74 (+6) 100 (0) 53
20ft Wnd AM(mph) Lgt/Var Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 7
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 3470 430 5490
Transport Wnd (kts) N 7 SW 6 SW 11
Vent Rate (kt-ft) 24290 2580 60390
Max ADI Early 20 Gen Poor 8 Poor 43 Gen Good
Max ADI Late 33 Fair 3 Very Poor 66 Good
Max LVORI Early 4 9 2
Max LVORI Late 4 9 2
Min Vsby Early 1 Fog 7 4 Fog
Min Vsby Late 9 3 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Southwest
winds 5 to 10 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
lower 80s. Southwest winds around 5 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southwest winds around 5 mph, becoming northwest
after midnight.
.FRIDAY AND FRIDAY NIGHT...Mostly cloudy. Lows in the mid 60s.
Highs in the upper 70s. Northeast winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly cloudy with showers likely. Lows in the
mid 60s. East winds 5 to 10 mph.
.SUNDAY...Mostly cloudy with showers likely. Highs in the upper
70s. East winds around 5 mph, becoming south in the afternoon.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the mid 60s. Southwest winds 5 to 10 mph.
.MONDAY...Mostly sunny with a chance of showers. Highs in the
upper 70s. Southwest winds 10 to 15 mph.
$$
MAZ022-182000-
Barnstable MA-
Including the cities of Chatham, Falmouth, and Provincetown
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 76 (+2) 67 (0) 83
RH % (24h trend) 79 (+26) 100 (0) 59
20ft Wnd AM(mph) N 7 Lgt/Var
20ft Wnd PM(mph) N 6 Lgt/Var SW 7
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 2480 420 3040
Transport Wnd (kts) N 10 SW 4 SW 11
Vent Rate (kt-ft) 24800 1680 33440
Max ADI Early 21 Fair 10 Poor 22 Fair
Max ADI Late 27 Fair 3 Very Poor 35 Fair
Max LVORI Early 5 9 3
Max LVORI Late 5 9 3
Min Vsby Early 0 Fog 2 Fog 4 Fog
Min Vsby Late 7 2 Fog 8
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 70s.
Southwest winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs around 80. West winds around
5 mph, becoming south around 5 mph in the afternoon.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. Southwest winds around 5 mph, becoming west after
midnight.
.FRIDAY...Partly sunny with a chance of showers. Highs in the mid
70s. Northeast winds around 5 mph.
.FRIDAY NIGHT...Mostly cloudy. Lows in the upper 60s. East winds
around 5 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy with showers likely.
Lows in the upper 60s. Highs in the upper 70s. South winds 5 to
10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. Southwest winds 5 to 10 mph.
.MONDAY...Mostly sunny with a chance of showers. Highs in the
upper 70s. Southwest winds 10 to 15 mph.
$$
MAZ023-182000-
Dukes MA-
Including the city of Vineyard Haven
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%) 10 10
Chance of Thunder (%) 0 0 0
Temp (24h trend) 79 (+4) 67 (-1) 82
RH % (24h trend) 76 (+12) 100 (0) 58
20ft Wnd AM(mph) N 7 Lgt/Var
20ft Wnd PM(mph) Lgt/Var Lgt/Var SW 8
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 1830 500 2380
Transport Wnd (kts) N 9 S 7 SW 12
Vent Rate (kt-ft) 16470 3500 28560
Max ADI Early 20 Gen Poor 8 Poor 16 Gen Poor
Max ADI Late 18 Gen Poor 5 Very Poor 30 Fair
Max LVORI Early 4 8 3
Max LVORI Late 4 8 3
Min Vsby Early 1 Fog 2 Fog 3 Fog
Min Vsby Late 9 2 Fog 9
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 70s.
Southwest winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s. Southwest winds
5 to 10 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. West winds 5 to 10 mph.
.FRIDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. Northeast winds 5 to 10 mph.
.FRIDAY NIGHT...Mostly cloudy. Lows in the upper 60s. Northeast
winds 5 to 10 mph.
.SATURDAY...Partly sunny with a chance of showers. Highs in the
upper 70s. East winds 5 to 10 mph.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy with showers likely.
Lows in the upper 60s. Highs in the upper 70s. South winds 5 to
10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. Southwest winds 10 to 15 mph.
.MONDAY...Mostly sunny with a chance of showers. Highs in the
upper 70s. Southwest winds 10 to 15 mph.
$$
MAZ024-182000-
Nantucket MA-
Including the city of Nantucket
409 AM EDT Tue Aug 18 2026
Today Tonight Wed
Cloud Cover Pcldy Pcldy Pcldy
Precip Type None None None
Chance Precip (%)
Chance of Thunder (%) 0 0 0
Temp (24h trend) 76 (+1) 67 (0) 80
RH % (24h trend) 87 (+19) 100 (0) 74
20ft Wnd AM(mph) N 10 SW 5
20ft Wnd PM(mph) N 8 Lgt/Var S 8
Precip Amount 0.00 0.00 0.00
Precip Duration
Precip Begin
Precip End
Mixing Hgt (ft-AGL) 1690 840 1160
Transport Wnd (kts) N 10 SW 5 SW 8
Vent Rate (kt-ft) 16900 4200 9280
Max ADI Early 21 Fair 12 Poor 14 Gen Poor
Max ADI Late 23 Fair 5 Very Poor 20 Gen Poor
Max LVORI Early 4 9 4
Max LVORI Late 4 9 4
Min Vsby Early 1 Fog 1 Fog 3 Fog
Min Vsby Late 7 2 Fog 8
Sunshine Hours N/A N/A N/A
CWR 0 0 0
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 70s.
Southwest winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the upper 70s. Southwest winds 5 to
10 mph.
.THURSDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. Southwest winds 5 to 10 mph.
.FRIDAY...Partly sunny with a chance of showers. Highs in the mid
70s. Northeast winds 5 to 10 mph.
.FRIDAY NIGHT AND SATURDAY...Mostly cloudy. A chance of showers.
Lows in the upper 60s. Highs in the mid 70s. East winds 10 to
15 mph.
.SATURDAY NIGHT AND SUNDAY...Mostly cloudy with showers likely.
Lows in the upper 60s. Highs in the upper 70s. South winds 10 to
15 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers. Lows in
the upper 60s. Southwest winds 10 to 15 mph.
.MONDAY...Mostly sunny with a chance of showers. Highs in the
upper 70s. Southwest winds 10 to 15 mph.
$$
.OUTLOOK 8 TO 14 DAYS...
Temperatures near normal. Precipitation above normal.
$$
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