926
FNUS53 KILX 171847
FWFILX
FIRE WEATHER PLANNING FORECAST FOR CENTRAL/SOUTHEAST ILLINOIS
NATIONAL WEATHER SERVICE LINCOLN IL
147 PM CDT THU SEP 17 2026
DISCUSSION
A STATIONARY FRONT WILL HOVER NEAR THE I-70 CORRIDOR INTO THE
FIRST PART OF THE WEEKEND. PERIODS OF SHOWERS AND STORMS WILL
BE MOST COMMON NORTH OF THIS BOUNDARY. IN ADDITION, WINDS WILL
BE LIGHT AND VARIABLE IN THE VICINITY OF THE FRONT. AS A RESULT,
LOW MIXING HEIGHTS AND POOR VENT RATES WILL BE COMMON.
ILZ027-028-030-180930-
KNOX-STARK-MARSHALL-
INCLUDING THE CITIES OF GALESBURG, TOULON, AND LACON
147 PM CDT THU SEP 17 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 20 50 40 50
CHANCE OF THUNDER (%) 0 0 30 30
TEMP (24H TREND) 65 (-3) 80 (-6) 66 85
RH % (24H TREND) 100 (+5) 74 (+5) 100 68
WIND 20FT/EARLY(MPH) LGT/VAR E 5 E 7 S 6
WIND 20FT/LATE(MPH) LGT/VAR E 6 SE 6 SW 6
PRECIP AMOUNT 0.00 0.10 0.07 0.06
PRECIP DURATION 0 1 1 2
PRECIP BEGIN 7 PM CONTINUING 10 PM CONTINUING
PRECIP END CONTINUING 3 PM CONTINUING CONTINUING
MIXING HGT(FT-AGL) 2390 2710
1700FT MIXING TEMP 76 79
TRANSPORT WND (MPH) E 13 SW 13
VENT RATE (MPH-FT) 31070 35230
VENT RATE CATEGORY POOR POOR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS IN THE
UPPER 60S. HIGHS IN THE MID 70S. MINIMUM RH 85 PERCENT. NORTHEAST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS AROUND 60. HIGHS IN THE MID 60S. MINIMUM RH
87 PERCENT. EAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE MID
50S. HIGHS IN THE MID 60S. MINIMUM RH 75 PERCENT. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
UPPER 60S. MINIMUM RH 69 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
LOWER 70S. MINIMUM RH 70 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
ILZ029-031-036>038-040-041-180930-
PEORIA-WOODFORD-FULTON-TAZEWELL-MCLEAN-SCHUYLER-MASON-
INCLUDING THE CITIES OF PEORIA, EUREKA, CANTON, PEKIN,
BLOOMINGTON, NORMAL, RUSHVILLE, AND HAVANA
147 PM CDT THU SEP 17 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 30 30 30
CHANCE OF THUNDER (%) 20 20 20 20
TEMP (24H TREND) 66 (-4) 85 (-5) 66 89
RH % (24H TREND) 100 (+3) 66 (+1) 100 54
WIND 20FT/EARLY(MPH) LGT/VAR E 5 E 6 S 5
WIND 20FT/LATE(MPH) LGT/VAR E 5 SE 5 SW 6
PRECIP AMOUNT 0.02 0.13 0.04 0.01
PRECIP DURATION 1 2 1 2
PRECIP BEGIN 7 PM CONTINUING 10 PM CONTINUING
PRECIP END CONTINUING 4 PM CONTINUING CONTINUING
MIXING HGT(FT-AGL) 2620 2960
1700FT MIXING TEMP 79 81
TRANSPORT WND (MPH) E 10 SW 12
VENT RATE (MPH-FT) 26200 35520
VENT RATE CATEGORY POOR POOR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 60S. HIGHS IN THE UPPER 70S.
MINIMUM RH 77 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. COOLER. LOWS IN THE LOWER 60S. HIGHS IN THE UPPER
60S. MINIMUM RH 83 PERCENT. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE MID
50S. HIGHS IN THE UPPER 60S. MINIMUM RH 73 PERCENT. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S. MINIMUM RH 65 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
LOWER 70S. MINIMUM RH 66 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
ILZ042-043-047>053-180930-
LOGAN-DE WITT-CASS-MENARD-SCOTT-MORGAN-SANGAMON-CHRISTIAN-MACON-
INCLUDING THE CITIES OF LINCOLN, CLINTON, BEARDSTOWN, PETERSBURG,
WINCHESTER, JACKSONVILLE, SPRINGFIELD, TAYLORVILLE, AND DECATUR
147 PM CDT THU SEP 17 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 20 20 20
CHANCE OF THUNDER (%) 20 20 0 0
TEMP (24H TREND) 69 (-2) 91 (-5) 69 93
RH % (24H TREND) 100 (+4) 55 (+6) 99 42
WIND 20FT/EARLY(MPH) LGT/VAR NE 5 E 6 S 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SE 5 SW 6
PRECIP AMOUNT 0.05 0.07 0.03 0.00
PRECIP DURATION 1 1 1 1
PRECIP BEGIN 9 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING 1 PM
MIXING HGT(FT-AGL) 3340 4070
1700FT MIXING TEMP 83 86
TRANSPORT WND (MPH) E 8 W 12
VENT RATE (MPH-FT) 26720 48840
VENT RATE CATEGORY POOR FAIR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS AROUND 70. HIGHS IN THE MID 80S. MINIMUM RH 58 PERCENT.
NORTHEAST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. NOT AS WARM. LOWS IN THE MID 60S. HIGHS IN THE MID
70S. MINIMUM RH 70 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS AROUND 70.
MINIMUM RH 65 PERCENT. NORTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE MID
70S. MINIMUM RH 57 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
UPPER 70S. MINIMUM RH 55 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
ILZ044>046-054>057-061-180930-
PIATT-CHAMPAIGN-VERMILION-MOULTRIE-DOUGLAS-COLES-EDGAR-SHELBY-
INCLUDING THE CITIES OF MONTICELLO, CHAMPAIGN, URBANA, DANVILLE,
SULLIVAN, TUSCOLA, CHARLESTON, MATTOON, PARIS, AND SHELBYVILLE
147 PM CDT THU SEP 17 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 30 20 20 20
CHANCE OF THUNDER (%) 20 0 20 20
TEMP (24H TREND) 67 (-4) 89 (-5) 65 92
RH % (24H TREND) 100 (+4) 55 (+6) 100 42
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR E 6 S 6
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SE 5 SW 6
PRECIP AMOUNT 0.05 0.03 0.05 0.01
PRECIP DURATION 2 1 1 2
PRECIP BEGIN 7 PM CONTINUING CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING CONTINUING
MIXING HGT(FT-AGL) 3280 3800
1700FT MIXING TEMP 82 81
TRANSPORT WND (MPH) NE 8 SW 12
VENT RATE (MPH-FT) 26240 45600
VENT RATE CATEGORY POOR POOR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
60S. HIGHS IN THE MID 80S. MINIMUM RH 57 PERCENT. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE UPPER 70S.
MINIMUM RH 65 PERCENT. NORTHEAST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 70S. MINIMUM RH 63 PERCENT. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
LOWER 70S. MINIMUM RH 57 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE
UPPER 70S. MINIMUM RH 54 PERCENT. NORTH WINDS AROUND 5 MPH.
ILZ062-063-066>068-071>073-180930-
CUMBERLAND-CLARK-EFFINGHAM-JASPER-CRAWFORD-CLAY-RICHLAND-LAWRENCE-
INCLUDING THE CITIES OF GREENUP, MARSHALL, EFFINGHAM, NEWTON,
ROBINSON, FLORA, OLNEY, AND LAWRENCEVILLE
147 PM CDT THU SEP 17 2026
TONIGHT FRI FRI NIGHT SAT
CLOUD COVER PCLDY MCLEAR PCLDY MCLEAR
PRECIP TYPE NONE SHOWERS TSTMS NONE
CHANCE PRECIP (%) 0 20 20 0
CHANCE OF THUNDER (%) 0 0 20 0
TEMP (24H TREND) 70 (-2) 93 (-4) 68 95
RH % (24H TREND) 100 (+5) 47 (+5) 100 35
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR SW 6
PRECIP AMOUNT 0.00 0.04 0.03 0.00
PRECIP DURATION 0 1
PRECIP BEGIN 10 AM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT(FT-AGL) 4510 5190
1700FT MIXING TEMP 88 88
TRANSPORT WND (MPH) N 6 W 12
VENT RATE (MPH-FT) 27060 62280
VENT RATE CATEGORY POOR FAIR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
PARTLY CLOUDY. LOWS IN THE LOWER 70S. HIGHS IN THE
LOWER 90S. MINIMUM RH 40 PERCENT. SOUTH WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
60S. HIGHS IN THE MID 80S. MINIMUM RH 52 PERCENT. NORTHEAST WINDS
AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE LOWER
60S. HIGHS IN THE MID 70S. MINIMUM RH 55 PERCENT. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE
UPPER 70S. MINIMUM RH 49 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS AROUND
80. MINIMUM RH 46 PERCENT. NORTH WINDS AROUND 5 MPH.
GEELHART
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