Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Central Illinois
Issued by NWS Central Illinois
562
FNUS53 KILX 200737
FWFILX
Fire Weather Planning Forecast for Central/Southeast Illinois
National Weather Service Lincoln IL
237 AM CDT Sun Sep 20 2026
.DISCUSSION...
Showers and thunderstorms will be most numerous along and north of
the I-72 corridor today...while conditions remain mostly dry south
of I-70. Showers will linger across all of central and southeast
Illinois tonight and Monday before gradually tapering off and
coming to an end by Tuesday. Ventilation rates will remain poor
through Monday.
ILZ027>031-036>038-040>043-202115-
Knox-Stark-Peoria-Marshall-Woodford-Fulton-Tazewell-McLean-
Schuyler-Mason-Logan-De Witt-
Including the cities of Galesburg, Toulon, Peoria, Lacon, Eureka,
Canton, Pekin, Bloomington, Normal, Rushville, Havana, Lincoln,
and Clinton
237 AM CDT Sun Sep 20 2026
Today Tonight Mon
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 80 40 30
Chance of Thunder (%) 50 20 0
Temp (24h trend) 80 (-4) 58 (-11) 68
RH % (24h trend) 77 (+2) 100 (+1) 74
Wind 20ft/early(mph) Lgt/Var NE 10 G20 NE 10 G19
Wind 20ft/late(mph) N 7 G18 NE 9 G19 NE 10 G18
Precip Amount 0.30 0.13 0.05
Precip Duration 9 2 2
Precip Begin 6 AM Continuing Continuing
Precip End Continuing Continuing Continuing
Mixing Hgt(ft-agl) 2240 2930
1700ft Mixing Temp 77 65
Transport Wnd (mph) N 8 E 15
Vent Rate (mph-ft) 17920 43950
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY...Mostly cloudy. Lows in the mid 50s. Highs in the mid
60s. Minimum RH 70 percent. Northeast winds around 10 mph.
.WEDNESDAY...Partly cloudy. Lows around 50. Highs in the upper
60s. Minimum RH 66 percent. North winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows around 50. Highs in the upper
60s. Minimum RH 67 percent. Northeast winds around 5 mph.
.FRIDAY...Mostly cloudy. Lows in the lower 50s. Highs in the
lower 70s. Minimum RH 62 percent. Northeast winds around 5 mph.
.SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s. Minimum RH 61 percent. Light winds.
$$
ILZ047>053-202115-
Cass-Menard-Scott-Morgan-Sangamon-Christian-Macon-
Including the cities of Beardstown, Petersburg, Winchester,
Jacksonville, Springfield, Taylorville, and Decatur
237 AM CDT Sun Sep 20 2026
Today Tonight Mon
Cloud Cover Pcldy Mcldy Mcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 40 60 40
Chance of Thunder (%) 40 30 0
Temp (24h trend) 86 (-4) 61 (-9) 72
RH % (24h trend) 59 (+1) 100 (+11) 73
Wind 20ft/early(mph) Lgt/Var NE 8 NE 8
Wind 20ft/late(mph) NW 6 NE 7 NE 8
Precip Amount 0.03 0.29 0.05
Precip Duration 2 3 2
Precip Begin 6 AM Continuing Continuing
Precip End Continuing Continuing Continuing
Mixing Hgt(ft-agl) 3510 2900
1700ft Mixing Temp 83 68
Transport Wnd (mph) NW 8 NE 13
Vent Rate (mph-ft) 28080 37700
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY...Mostly cloudy. Lows in the upper 50s. Highs in the
upper 60s. Minimum RH 65 percent. Northeast winds 5 to 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the lower 50s. Highs around
70. Minimum RH 60 percent. North winds around 5 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s. Minimum RH 60 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 54 percent. Northeast winds around 5 mph.
.SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s. Minimum RH 52 percent. Light winds.
$$
ILZ044>046-202115-
Piatt-Champaign-Vermilion-
Including the cities of Monticello, Champaign, Urbana,
and Danville
237 AM CDT Sun Sep 20 2026
Today Tonight Mon
Cloud Cover Mcldy Mcldy Mcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 50 40 40
Chance of Thunder (%) 30 30 0
Temp (24h trend) 84 (-1) 59 (-9) 70
RH % (24h trend) 66 (-11) 100 (+5) 72
Wind 20ft/early(mph) Lgt/Var NE 10 NE 10
Wind 20ft/late(mph) N 6 NE 9 NE 10
Precip Amount 0.19 0.16 0.07
Precip Duration 2 2 2
Precip Begin 7 AM Continuing Continuing
Precip End Continuing Continuing Continuing
Mixing Hgt(ft-agl) 2870 2930
1700ft Mixing Temp 83 67
Transport Wnd (mph) NW 8 E 15
Vent Rate (mph-ft) 22960 43950
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY...Mostly cloudy. Lows in the mid 50s. Highs in the mid
60s. Minimum RH 68 percent. Northeast winds around 10 mph.
.WEDNESDAY...Mostly cloudy. Lows in the lower 50s. Highs in the
upper 60s. Minimum RH 66 percent. North winds 5 to 10 mph.
.THURSDAY...Mostly cloudy. Lows in the lower 50s. Highs around
70. Minimum RH 64 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. Lows in the lower 50s. Highs in the
lower 70s. Minimum RH 58 percent. Northeast winds around 5 mph.
.SATURDAY...Partly cloudy. Lows around 50. Highs in the mid 70s.
Minimum RH 53 percent. Northeast winds around 5 mph.
$$
ILZ054>057-061>063-202115-
Moultrie-Douglas-Coles-Edgar-Shelby-Cumberland-Clark-
Including the cities of Sullivan, Tuscola, Charleston, Mattoon,
Paris, Shelbyville, Greenup, and Marshall
237 AM CDT Sun Sep 20 2026
Today Tonight Mon
Cloud Cover Pcldy Mcldy Mcldy
Precip Type Tstms Tstms Showers
Chance Precip (%) 30 50 40
Chance of Thunder (%) 30 30 0
Temp (24h trend) 90 (-2) 60 (-9) 74
RH % (24h trend) 45 (-11) 100 (+16) 67
Wind 20ft/early(mph) Lgt/Var NE 8 NE 8
Wind 20ft/late(mph) NW 6 NE 7 NE 8
Precip Amount 0.04 0.24 0.11
Precip Duration 1 2 2
Precip Begin 11 AM Continuing Continuing
Precip End Continuing Continuing 6 PM
Mixing Hgt(ft-agl) 4070 2680
1700ft Mixing Temp 87 70
Transport Wnd (mph) NW 9 NE 12
Vent Rate (mph-ft) 36630 32160
Vent Rate Category Poor Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY...Mostly cloudy. Lows in the mid 50s. Highs in the upper
60s. Minimum RH 63 percent. Northeast winds around 10 mph.
.WEDNESDAY...Mostly cloudy. Lows in the lower 50s. Highs around
70. Minimum RH 60 percent. North winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows in the lower 50s. Highs in the
lower 70s. Minimum RH 57 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. Lows in the lower 50s. Highs in the mid
70s. Minimum RH 50 percent. Northeast winds around 5 mph.
.SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the
mid 70s. Minimum RH 46 percent. Northeast winds around 5 mph.
$$
ILZ066>068-071>073-202115-
Effingham-Jasper-Crawford-Clay-Richland-Lawrence-
Including the cities of Effingham, Newton, Robinson, Flora,
Olney, and Lawrenceville
237 AM CDT Sun Sep 20 2026
Today Tonight Mon
Cloud Cover Pcldy Pcldy Mcldy
Precip Type None Tstms Showers
Chance Precip (%) 0 60 40
Chance of Thunder (%) 0 30 0
Temp (24h trend) 94 (-2) 64 (-6) 81
RH % (24h trend) 35 (-7) 100 (+22) 58
Wind 20ft/early(mph) Lgt/Var N 6 NE 6
Wind 20ft/late(mph) W 6 NE 6 NE 7
Precip Amount 0.00 0.23 0.07
Precip Duration 3 2
Precip Begin 6 PM Continuing
Precip End Continuing Continuing
Mixing Hgt(ft-agl) 5430 2760
1700ft Mixing Temp 90 75
Transport Wnd (mph) W 12 NE 10
Vent Rate (mph-ft) 65160 27600
Vent Rate Category Fair Poor
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY...Mostly cloudy. A chance of showers. Lows in the upper
50s. Highs in the lower 70s. Minimum RH 58 percent. Northeast
winds 5 to 10 mph.
.WEDNESDAY...Partly cloudy. Lows in the mid 50s. Highs in the
lower 70s. Minimum RH 54 percent. North winds 5 to 10 mph.
.THURSDAY...Partly cloudy. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 52 percent. North winds around 5 mph.
.FRIDAY...Mostly cloudy. Lows in the mid 50s. Highs in the mid
70s. Minimum RH 46 percent. Northeast winds around 5 mph.
.SATURDAY...Partly cloudy. Lows in the lower 50s. Highs in the
upper 70s. Minimum RH 42 percent. Northeast winds around 5 mph.
$$
Barnes