606
FNUS53 KILX 180646
FWFILX
FIRE WEATHER PLANNING FORECAST FOR CENTRAL/SOUTHEAST ILLINOIS
NATIONAL WEATHER SERVICE LINCOLN IL
146 AM CDT FRI SEP 18 2026
DISCUSSION
ISOLATED THUNDERSTORMS WILL BE POSSIBLE ACROSS CENTRAL AND
SOUTHEAST ILLINOIS TODAY AS A STATIONARY FRONTAL BOUNDARY REMAINS
IN THE VICINITY. RAIN CHANCES WILL INCREASE LATE TONIGHT INTO
SATURDAY...PARTICULARLY ALONG AND NORTH OF THE I-74 CORRIDOR.
VENTILATION WILL GENERALLY REMAIN POOR THROUGH SATURDAY.
ILZ027>031-036-037-182130-
KNOX-STARK-PEORIA-MARSHALL-WOODFORD-FULTON-TAZEWELL-
INCLUDING THE CITIES OF GALESBURG, TOULON, PEORIA, LACON, EUREKA,
CANTON, AND PEKIN
146 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 40 70
CHANCE OF THUNDER (%) 20 40 50
TEMP (24H TREND) 81 (-9) 65 (-2) 85
RH % (24H TREND) 72 (+8) 100 (+1) 68
WIND 20FT/EARLY(MPH) NE 6 E 6 S 5
WIND 20FT/LATE(MPH) E 6 SE 5 S 5
PRECIP AMOUNT 0.04 0.07 0.24
PRECIP DURATION 1 1 3
PRECIP BEGIN 9 AM 11 PM CONTINUING
PRECIP END 3 PM CONTINUING CONTINUING
MIXING HGT(FT-AGL) 2550 1830
1700FT MIXING TEMP 77 80
TRANSPORT WND (MPH) E 12 S 14
VENT RATE (MPH-FT) 30600 25620
VENT RATE CATEGORY POOR POOR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS. LOWS IN THE MID
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. COOLER. LOWS IN THE UPPER 50S. HIGHS IN THE MID
60S. MINIMUM RH 84 PERCENT. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE LOWER
50S. HIGHS IN THE MID 60S. MINIMUM RH 74 PERCENT. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS AROUND 50. HIGHS IN THE UPPER
60S. MINIMUM RH 69 PERCENT. NORTH WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S. MINIMUM RH 66 PERCENT. NORTH WINDS AROUND 5 MPH.
ILZ038-043>046-182130-
MCLEAN-DE WITT-PIATT-CHAMPAIGN-VERMILION-
INCLUDING THE CITIES OF BLOOMINGTON, NORMAL, CLINTON, MONTICELLO,
CHAMPAIGN, URBANA, AND DANVILLE
146 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT
CLOUD COVER MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 20 50
CHANCE OF THUNDER (%) 20 20 50
TEMP (24H TREND) 82 (-10) 63 (-5) 86
RH % (24H TREND) 67 (+10) 100 (+1) 61
WIND 20FT/EARLY(MPH) NE 5 E 7 SE 6
WIND 20FT/LATE(MPH) NE 6 SE 6 S 6
PRECIP AMOUNT 0.00 0.00 0.08
PRECIP DURATION 0 1 2
PRECIP BEGIN 10 AM 1 AM CONTINUING
PRECIP END 2 PM CONTINUING CONTINUING
MIXING HGT(FT-AGL) 2420 2360
1700FT MIXING TEMP 78 80
TRANSPORT WND (MPH) E 10 S 12
VENT RATE (MPH-FT) 24200 28320
VENT RATE CATEGORY POOR POOR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 60S. HIGHS IN THE LOWER 80S.
MINIMUM RH 73 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. NOT AS WARM. LOWS IN THE UPPER 50S. HIGHS AROUND
70. MINIMUM RH 80 PERCENT. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE MID
50S. HIGHS IN THE MID 60S. MINIMUM RH 70 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 IN THE
LOWER 70S. MINIMUM RH 61 PERCENT. NORTH WINDS AROUND 5 MPH.
ILZ040>042-047>053-182130-
SCHUYLER-MASON-LOGAN-CASS-MENARD-SCOTT-MORGAN-SANGAMON-CHRISTIAN-
MACON-
INCLUDING THE CITIES OF RUSHVILLE, HAVANA, LINCOLN, BEARDSTOWN,
PETERSBURG, WINCHESTER, JACKSONVILLE, SPRINGFIELD, TAYLORVILLE,
AND DECATUR
146 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 20 0 30
CHANCE OF THUNDER (%) 20 0 30
TEMP (24H TREND) 89 (-7) 67 (-3) 91
RH % (24H TREND) 57 (+9) 100 (+2) 49
WIND 20FT/EARLY(MPH) NE 5 E 6 S 5
WIND 20FT/LATE(MPH) LGT/VAR SE 5 S 6
PRECIP AMOUNT 0.01 0.00 0.03
PRECIP DURATION 1
PRECIP BEGIN 6 AM
PRECIP END CONTINUING
MIXING HGT(FT-AGL) 3110 2580
1700FT MIXING TEMP 83 86
TRANSPORT WND (MPH) E 8 SW 12
VENT RATE (MPH-FT) 24880 30960
VENT RATE CATEGORY POOR POOR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY. LOWS IN THE UPPER 60S.
HIGHS IN THE MID 80S. MINIMUM RH 63 PERCENT. EAST WINDS AROUND
5 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. NOT AS WARM. LOWS IN THE LOWER 60S. HIGHS IN THE
LOWER 70S. MINIMUM RH 78 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE MID
50S. HIGHS IN THE UPPER 60S. MINIMUM RH 68 PERCENT. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S. MINIMUM RH 60 PERCENT. NORTH WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
MID 70S. MINIMUM RH 57 PERCENT. NORTH WINDS AROUND 5 MPH.
ILZ054>057-061>063-067-068-073-182130-
MOULTRIE-DOUGLAS-COLES-EDGAR-SHELBY-CUMBERLAND-CLARK-JASPER-
CRAWFORD-LAWRENCE-
INCLUDING THE CITIES OF SULLIVAN, TUSCOLA, CHARLESTON, MATTOON,
PARIS, SHELBYVILLE, GREENUP, MARSHALL, NEWTON, ROBINSON,
AND LAWRENCEVILLE
146 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS
CHANCE PRECIP (%) 0 0 30
CHANCE OF THUNDER (%) 0 0 30
TEMP (24H TREND) 90 (-6) 65 (-6) 92
RH % (24H TREND) 52 (+7) 100 (+1) 42
WIND 20FT/EARLY(MPH) LGT/VAR E 6 S 5
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR SW 5
PRECIP AMOUNT 0.00 0.00 0.02
PRECIP DURATION 1
PRECIP BEGIN 7 AM
PRECIP END CONTINUING
MIXING HGT(FT-AGL) 3310 4820
1700FT MIXING TEMP 85 87
TRANSPORT WND (MPH) NE 8 SW 10
VENT RATE (MPH-FT) 26480 48200
VENT RATE CATEGORY POOR FAIR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
60S. HIGHS IN THE UPPER 80S. MINIMUM RH 49 PERCENT. SOUTHEAST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. NOT AS WARM. LOWS IN THE LOWER 60S. HIGHS IN THE
UPPER 70S. MINIMUM RH 67 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 70S. MINIMUM RH 63 PERCENT. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S. MINIMUM RH 56 PERCENT. NORTH WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
MID 70S. MINIMUM RH 53 PERCENT. NORTH WINDS AROUND 5 MPH.
ILZ066-071-072-182130-
EFFINGHAM-CLAY-RICHLAND-
INCLUDING THE CITIES OF EFFINGHAM, FLORA, AND OLNEY
146 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE
CHANCE PRECIP (%) 20 20 0
CHANCE OF THUNDER (%) 20 20 0
TEMP (24H TREND) 93 (-4) 68 (-4) 95
RH % (24H TREND) 49 (+8) 100 (+1) 39
WIND 20FT/EARLY(MPH) LGT/VAR LGT/VAR LGT/VAR
WIND 20FT/LATE(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.01 0.00
PRECIP DURATION 1
PRECIP BEGIN 6 PM
PRECIP END 11 PM
MIXING HGT(FT-AGL) 4090 6600
1700FT MIXING TEMP 88 91
TRANSPORT WND (MPH) NE 7 W 10
VENT RATE (MPH-FT) 28630 66000
VENT RATE CATEGORY POOR FAIR
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
SUNDAY
PARTLY CLOUDY. LOWS AROUND 70. HIGHS IN THE LOWER 90S.
MINIMUM RH 41 PERCENT. SOUTH WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. NOT AS WARM. LOWS IN THE MID 60S. HIGHS IN THE
LOWER 80S. MINIMUM RH 60 PERCENT. NORTHEAST WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE UPPER
50S. HIGHS IN THE MID 70S. MINIMUM RH 59 PERCENT. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE MID
70S. MINIMUM RH 51 PERCENT. NORTH WINDS AROUND 5 MPH.
THURSDAY
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE MID
70S. MINIMUM RH 49 PERCENT. NORTH WINDS AROUND 5 MPH.
BARNES
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