Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Central Illinois
Issued by NWS Central Illinois
609
FNUS53 KILX 150818
FWFILX
Fire Weather Planning Forecast for Central/Southeast Illinois
National Weather Service Lincoln IL
318 AM CDT Sat Aug 15 2026
.DISCUSSION...
Transport winds remain slow through tomorrow as a surface front
decays over central Illinois. This will result in mainly poor to
fair ventilation.
Near daily chances for showers and thunderstorms exist through
the weekend.
ILZ027>031-036>038-152115-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-
Including the cities of Galesburg, Toulon, Peoria, Lacon, Eureka,
Canton, Pekin, Bloomington, and Normal
318 AM CDT Sat Aug 15 2026
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 100 60 50
Chance of Thunder (%) 50 30 30
Temp (24h trend) 86 (+6) 72 (+1) 86
RH % (24h trend) 77 (-7) 100 (0) 75
Wind 20ft/early(mph) S 5 Lgt/Var W 5
Wind 20ft/late(mph) SW 6 Lgt/Var NW 7
Precip Amount 0.49 0.25 0.09
Precip Duration 4 4 1
Precip Begin 6 AM 6 PM Continuing
Precip End 1 PM Continuing 4 PM
Mixing Hgt(ft-agl) 2730 3450
1700ft Mixing Temp 84 83
Transport Wnd (mph) W 10 NW 14
Vent Rate (mph-ft) 27300 48300
Vent Rate Category Poor Fair
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Partly cloudy. Lows in the mid 60s. Highs in the lower
80s. Minimum RH 64 percent. North winds around 5 mph.
.TUESDAY...Partly cloudy. Lows in the lower 60s. Highs in the
lower 80s. Minimum RH 67 percent. South winds around 5 mph.
.WEDNESDAY...Mostly cloudy. Showers likely and a chance of
thunderstorms. Lows in the upper 60s. Highs in the lower 80s.
Minimum RH 73 percent. Southwest winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 60s. Highs in the
mid 70s. Minimum RH 69 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. Lows in the upper 50s. Highs in the
upper 70s. Minimum RH 69 percent. Northeast winds around 5 mph.
$$
ILZ040>043-047>053-152115-
Schuyler-Mason-Logan-De Witt-Cass-Menard-Scott-Morgan-Sangamon-
Christian-Macon-
Including the cities of Rushville, Havana, Lincoln, Clinton,
Beardstown, Petersburg, Winchester, Jacksonville, Springfield,
Taylorville, and Decatur
318 AM CDT Sat Aug 15 2026
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 90 40 30
Chance of Thunder (%) 40 40 30
Temp (24h trend) 89 (+3) 73 (+1) 89
RH % (24h trend) 69 (-7) 100 (0) 70
Wind 20ft/early(mph) SE 5 Lgt/Var Lgt/Var
Wind 20ft/late(mph) SW 6 Lgt/Var NW 6
Precip Amount 0.31 0.08 0.05
Precip Duration 3 1 1
Precip Begin 6 AM 11 PM Continuing
Precip End 12 PM Continuing 4 PM
Mixing Hgt(ft-agl) 3230 3430
1700ft Mixing Temp 88 87
Transport Wnd (mph) SW 14 NW 13
Vent Rate (mph-ft) 45220 44590
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Partly cloudy. Lows in the upper 60s. Highs in the
lower 80s. Minimum RH 61 percent. North winds around 5 mph.
.TUESDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 62 percent. Light winds.
.WEDNESDAY...Partly cloudy. A chance of showers and
thunderstorms. Lows around 70. Highs in the mid 80s. Minimum RH
67 percent. South winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 60s. Highs in the
upper 70s. Minimum RH 63 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. Lows around 60. Highs in the upper 70s.
Minimum RH 62 percent. Northeast winds around 5 mph.
$$
ILZ044>046-054>057-061-152115-
Piatt-Champaign-Vermilion-Moultrie-Douglas-Coles-Edgar-Shelby-
Including the cities of Monticello, Champaign, Urbana, Danville,
Sullivan, Tuscola, Charleston, Mattoon, Paris, and Shelbyville
318 AM CDT Sat Aug 15 2026
Today Tonight Sun
Cloud Cover Mcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms
Chance Precip (%) 90 30 30
Chance of Thunder (%) 40 30 20
Temp (24h trend) 87 (+5) 72 (+2) 88
RH % (24h trend) 73 (-7) 100 (0) 70
Wind 20ft/early(mph) S 5 Lgt/Var W 5
Wind 20ft/late(mph) S 5 Lgt/Var W 7
Precip Amount 0.32 0.05 0.09
Precip Duration 5 1 1
Precip Begin 6 AM 8 PM Continuing
Precip End 5 PM Continuing 6 PM
Mixing Hgt(ft-agl) 2600 3320
1700ft Mixing Temp 85 86
Transport Wnd (mph) SW 10 NW 14
Vent Rate (mph-ft) 26000 46480
Vent Rate Category Poor Fair
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Partly cloudy. Lows in the upper 60s. Highs in the
lower 80s. Minimum RH 65 percent. North winds around 5 mph.
.TUESDAY...Mostly clear. Lows in the lower 60s. Highs in the mid
80s. Minimum RH 62 percent. Light winds.
.WEDNESDAY...Partly cloudy. A chance of showers and
thunderstorms. Lows in the upper 60s. Highs in the mid 80s.
Minimum RH 69 percent. South winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 60s. Highs in the
upper 70s. Minimum RH 66 percent. North winds around 5 mph.
.FRIDAY...Partly cloudy. Lows in the upper 50s. Highs in the
upper 70s. Minimum RH 65 percent. Northeast winds around 5 mph.
$$
ILZ062-063-066>068-071>073-152115-
Cumberland-Clark-Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Greenup, Marshall, Effingham, Newton,
Robinson, Flora, Olney, and Lawrenceville
318 AM CDT Sat Aug 15 2026
Today Tonight Sun
Cloud Cover Pcldy Mclear Pcldy
Precip Type Tstms None None
Chance Precip (%) 20 0 0
Chance of Thunder (%) 20 0 0
Temp (24h trend) 93 (+4) 73 (+1) 92
RH % (24h trend) 60 (-9) 95 (-4) 60
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) S 5 Lgt/Var W 6
Precip Amount 0.05 0.00 0.00
Precip Duration 1
Precip Begin 6 AM
Precip End 12 PM
Mixing Hgt(ft-agl) 3300 3460
1700ft Mixing Temp 89 91
Transport Wnd (mph) SW 10 W 12
Vent Rate (mph-ft) 33000 41520
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.MONDAY...Partly cloudy. A chance of showers and thunderstorms.
Lows in the lower 70s. Highs in the mid 80s. Minimum RH
62 percent. North winds around 5 mph.
.TUESDAY...Mostly clear. Lows in the mid 60s. Highs in the mid
80s. Minimum RH 56 percent. Light winds.
.WEDNESDAY...Partly cloudy. A chance of showers and
thunderstorms. Lows in the upper 60s. Highs in the upper 80s.
Minimum RH 63 percent. South winds up to 10 mph.
.THURSDAY...Partly cloudy. A chance of showers. Lows in the mid
60s. Highs in the lower 80s. Minimum RH 60 percent. North winds
around 5 mph.
.FRIDAY...Partly cloudy. Lows around 60. Highs around 80. Minimum
RH 59 percent. Northeast winds around 5 mph.
$$
Copple