Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Central Illinois
Issued by NWS Central Illinois
573
FNUS53 KILX 210921
FWFILX
Fire Weather Planning Forecast for Central/Southeast Illinois
National Weather Service Lincoln IL
421 AM CDT Fri Aug 21 2026
.DISCUSSION...
Winds will be rather light today with full sun. Clouds will increase
late in the day when thunderstorms start developing to the north and
northwest this afternoon. These storms will drift south to southeastward
across the region, producing erratic winds and some storms could produce
wind gusts over 60 mph. A weak cold front will shift winds to the northwest
late tonight. Vent rate will be poor today but good tomorrow. Precipitation
chances dwindle for the weekend and into early next week.
ILZ027>031-036>038-212130-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-
Including the cities of Galesburg, Toulon, Peoria, Lacon, Eureka,
Canton, Pekin, Bloomington, and Normal
421 AM CDT Fri Aug 21 2026
Today Tonight Sat
Cloud Cover Mclear Pcldy Mclear
Precip Type None Tstms None
Chance Precip (%) 0 40 0
Chance of Thunder (%) 0 30 0
Temp (24h trend) 82 (+1) 63 (+4) 80
RH % (24h trend) 61 (+4) 99 (+1) 59
Wind 20ft/early(mph) Lgt/Var Lgt/Var NW 5
Wind 20ft/late(mph) SW 5 Lgt/Var NW 8
Precip Amount 0.00 0.12 0.00
Precip Duration 1
Precip Begin 6 PM
Precip End 1 AM
Mixing Hgt(ft-agl) 3720 4820
1700ft Mixing Temp 78 80
Transport Wnd (mph) W 10 NW 17
Vent Rate (mph-ft) 37200 81940
Vent Rate Category Poor Good
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY...Mostly clear. Lows in the upper 50s. Highs in the upper
70s. Minimum RH 58 percent. Northwest winds around 5 mph.
.MONDAY...Partly cloudy. Lows in the upper 50s. Highs in the
upper 70s. Minimum RH 62 percent. Light winds.
.TUESDAY...Partly cloudy. Lows around 60. Highs around 80.
Minimum RH 67 percent. Southeast winds around 5 mph.
.WEDNESDAY...Mostly cloudy. Lows in the mid 60s. Highs in the
lower 80s. Minimum RH 69 percent. South winds around 5 mph.
.THURSDAY...Mostly clear. Lows in the lower 60s. Highs in the
lower 80s. Minimum RH 66 percent. West winds around 5 mph.
$$
ILZ040>043-047>053-212130-
Schuyler-Mason-Logan-De Witt-Cass-Menard-Scott-Morgan-Sangamon-
Christian-Macon-
Including the cities of Rushville, Havana, Lincoln, Clinton,
Beardstown, Petersburg, Winchester, Jacksonville, Springfield,
Taylorville, and Decatur
421 AM CDT Fri Aug 21 2026
Today Tonight Sat
Cloud Cover Mclear Mclear Mclear
Precip Type None Tstms None
Chance Precip (%) 0 30 0
Chance of Thunder (%) 0 30 0
Temp (24h trend) 85 (+3) 64 (+4) 83
RH % (24h trend) 53 (-7) 100 (+3) 53
Wind 20ft/early(mph) Lgt/Var Lgt/Var NW 5
Wind 20ft/late(mph) Lgt/Var Lgt/Var NW 8
Precip Amount 0.00 0.06 0.00
Precip Duration 1
Precip Begin 7 PM
Precip End 1 AM
Mixing Hgt(ft-agl) 4320 5170
1700ft Mixing Temp 80 82
Transport Wnd (mph) W 8 NW 17
Vent Rate (mph-ft) 34560 87890
Vent Rate Category Poor Good
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY...Mostly clear. Lows around 60. Highs in the upper 70s.
Minimum RH 49 percent. Northwest winds around 5 mph.
.MONDAY...Partly cloudy. Lows in the upper 50s. Highs in the
upper 70s. Minimum RH 55 percent. Light winds.
.TUESDAY...Partly cloudy. Lows in the lower 60s. Highs in the
lower 80s. Minimum RH 58 percent. East winds around 5 mph.
.WEDNESDAY...Mostly cloudy. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 60 percent. South winds around 5 mph.
.THURSDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 56 percent. West winds around 5 mph.
$$
ILZ044>046-054>057-061-212130-
Piatt-Champaign-Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby-
Including the cities of Monticello, Champaign, Urbana, Danville,
Sullivan, Tuscola, Charleston, Mattoon, Paris, and Shelbyville
421 AM CDT Fri Aug 21 2026
Today Tonight Sat
Cloud Cover Mclear Pcldy Mclear
Precip Type None Tstms None
Chance Precip (%) 0 30 0
Chance of Thunder (%) 0 30 0
Temp (24h trend) 83 (+1) 63 (+3) 82
RH % (24h trend) 53 (-11) 100 (+3) 55
Wind 20ft/early(mph) Lgt/Var Lgt/Var NW 6
Wind 20ft/late(mph) Lgt/Var Lgt/Var NW 9 G17
Precip Amount 0.00 0.02 0.00
Precip Duration 1
Precip Begin 8 PM
Precip End 5 AM
Mixing Hgt(ft-agl) 3950 4550
1700ft Mixing Temp 77 79
Transport Wnd (mph) W 6 NW 17
Vent Rate (mph-ft) 23700 77350
Vent Rate Category Poor Good
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY...Mostly clear. Lows in the upper 50s. Highs in the upper
70s. Minimum RH 54 percent. Northwest winds around 5 mph.
.MONDAY...Partly cloudy. Lows in the upper 50s. Highs in the
upper 70s. Minimum RH 54 percent. Light winds.
.TUESDAY...Partly cloudy. Lows around 60. Highs in the lower 80s.
Minimum RH 59 percent. East winds around 5 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 60s. Highs in the
lower 80s. Minimum RH 62 percent. South winds around 5 mph.
.THURSDAY...Partly cloudy. Lows in the mid 60s. Highs in the
lower 80s. Minimum RH 60 percent. West winds around 5 mph.
$$
ILZ062-063-066>068-071>073-212130-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Greenup, Marshall, Effingham, Newton,
Robinson, Flora, Olney, and Lawrenceville
421 AM CDT Fri Aug 21 2026
Today Tonight Sat
Cloud Cover Clear Mclear Mclear
Precip Type None Tstms None
Chance Precip (%) 0 20 0
Chance of Thunder (%) 0 20 0
Temp (24h trend) 84 (+1) 64 (+1) 84
RH % (24h trend) 49 (-14) 100 (+2) 49
Wind 20ft/early(mph) Lgt/Var Lgt/Var NW 5
Wind 20ft/late(mph) Lgt/Var Lgt/Var NW 9
Precip Amount 0.00 0.01 0.00
Precip Duration 1
Precip Begin 12 AM
Precip End 5 AM
Mixing Hgt(ft-agl) 4060 4900
1700ft Mixing Temp 79 81
Transport Wnd (mph) NW 7 N 17
Vent Rate (mph-ft) 28420 83300
Vent Rate Category Poor Good
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.SUNDAY...Mostly clear. Lows in the lower 60s. Highs in the lower
80s. Minimum RH 47 percent. Northwest winds around 5 mph.
.MONDAY...Partly cloudy. Lows in the upper 50s. Highs around 80.
Minimum RH 49 percent. Light winds.
.TUESDAY...Partly cloudy. Lows in the lower 60s. Highs in the
lower 80s. Minimum RH 52 percent. East winds around 5 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 57 percent. Southeast winds around 5 mph.
.THURSDAY...Partly cloudy. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 54 percent. Northwest winds around 5 mph.
$$
Knutsvig