988
FNUS53 KLOT 202102
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
402 PM CDT MON APR 20 2026
DISCUSSION
SOUTHERLY WINDS MAY GUST AS HIGH AS 20 MPH LATE
THIS AFTERNOON FOR MOST OF THE AREA, WHILE A LAKE BREEZE SLOWLY
MOVES INLAND ACROSS FAR NORTHEAST ILLINOIS. WINDS WILL BECOME
SOUTHEAST EARLY THIS EVENING AND THEN TURN BACK TO SOUTHWEST
OVERNIGHT AS GUSTS INCREASE INTO THE 20 TO 25 MPH RANGE. GUSTS
WILL INCREASE FURTHER INTO THE 30 TO 35 MPH RANGE TUESDAY, MAINLY
SOUTH OF INTERSTATE 80.
A WEAK COLD FRONT WILL MOVE ACROSS THE AREA TUESDAY NIGHT WITH
A CHANCE OF SHOWERS AND THUNDERSTORMS TUESDAY AFTERNOON INTO
TUESDAY EVENING. DRY WEATHER IS EXPECTED WEDNESDAY AND THURSDAY
AND THEN PERIODS OF SHOWERS AND SCATTERED THUNDERSTORMS WILL
RETURN THURSDAY NIGHT INTO FRIDAY. ADDITIONAL SHOWERS AND
POSSIBLE THUNDERSTORMS MAY RETURN EARLY NEXT WEEK.
ILZ014-210930-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 20 20
MAX TEMP (24HR TREND) 75 (+21) 74
MIN RH % (24HR TREND) 42 (+12) 42
MIN TEMP (24HR TREND) 45 (+12) 49
MAX RH % (24HR TREND) 72 (-12) 94
20FT WIND AM (MPH) SW 10-15 NE 5
20FT WIND PM (MPH) S 8-11 SW 10-15 W 5-6 E 5
PEAK WIND GUSTS (MPH) 23 25
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.00
11 AM MIXING HGT (FT) 2500 2100
MAX MIXING HGT (FT) 4900 3300
TRANSPORT WND (MPH) W 24 E 6
VENT RATE (MPH-FT) 117600 23100
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 10 TO
15 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS AROUND 10 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH WINDS
AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
UPPER 40S. SOUTHWEST WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER
MIDNIGHT.
SATURDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS AROUND 60. NORTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
ILZ006-210930-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 74 (+23) 70
MIN RH % (24HR TREND) 45 (+13) 45
MIN TEMP (24HR TREND) 42 (+14) 45
MAX RH % (24HR TREND) 76 (-20) 93
20FT WIND AM (MPH) SW 10-12 NE 5-6
20FT WIND PM (MPH) S 8-11 W 10-12 NW 5 E 5-6
PEAK WIND GUSTS (MPH) 23 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2400 1700
MAX MIXING HGT (FT) 3900 2600
TRANSPORT WND (MPH) W 18 SE 6
VENT RATE (MPH-FT) 70200 18200
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. EAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST AFTER MIDNIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
10 TO 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. SHOWERS LIKELY AFTER MIDNIGHT. LOWS AROUND 60.
SOUTH WINDS AROUND 10 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE LOWER 70S. SOUTH WINDS AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
MID 40S. NORTHWEST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTH WINDS 5 TO
10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
INZ001-210930-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 40
MAX TEMP (24HR TREND) 76 (+22) 75
MIN RH % (24HR TREND) 40 (+12) 48
MIN TEMP (24HR TREND) 43 (+13) 50
MAX RH % (24HR TREND) 75 (-24) 98
20FT WIND AM (MPH) SW 10-15 N 5
20FT WIND PM (MPH) S 7-10 SW 10-15 SW 5-7 N 5
PEAK WIND GUSTS (MPH) 21 27
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.10-0.25 0.00
11 AM MIXING HGT (FT) 2500 2400
MAX MIXING HGT (FT) 5300 4400
TRANSPORT WND (MPH) SW 28 E 6
VENT RATE (MPH-FT) 153700 30800
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 10 TO
15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER
60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
70S. SOUTH WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. COOLER. LOWS IN THE UPPER 40S. SOUTHWEST WINDS AROUND
5 MPH, BECOMING NORTHWEST AFTER MIDNIGHT.
SATURDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
INZ002-210930-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 40 10
MAX TEMP (24HR TREND) 76 (+23) 74
MIN RH % (24HR TREND) 41 (+12) 47
MIN TEMP (24HR TREND) 42 (+14) 51
MAX RH % (24HR TREND) 73 (-25) 94
20FT WIND AM (MPH) SW 10-15 LGT/VAR
20FT WIND PM (MPH) S 7-10 SW 10-15 SW 5-6 NW 4-5
PEAK WIND GUSTS (MPH) 24 27
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 2400 2600
MAX MIXING HGT (FT) 5300 4300
TRANSPORT WND (MPH) SW 27 NW 6
VENT RATE (MPH-FT) 148400 30100
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
10 TO 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER
60S. SOUTH WINDS AROUND 10 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE LOWER
70S. SOUTH WINDS AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. COOLER.
LOWS IN THE UPPER 40S. SOUTHWEST WINDS AROUND 5 MPH, BECOMING
NORTHWEST AFTER MIDNIGHT.
SATURDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
ILZ013-210930-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 20 20
MAX TEMP (24HR TREND) 75 (+20) 74
MIN RH % (24HR TREND) 44 (+13) 42
MIN TEMP (24HR TREND) 45 (+13) 51
MAX RH % (24HR TREND) 77 (-10) 93
20FT WIND AM (MPH) SW 12 NE 5-6
20FT WIND PM (MPH) S 8-11 SW 12 W 5-6 SE 5-6
PEAK WIND GUSTS (MPH) 21 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2500 2200
MAX MIXING HGT (FT) 4900 3900
TRANSPORT WND (MPH) W 24 SE 6
VENT RATE (MPH-FT) 117600 27300
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 10 TO
15 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH WINDS
AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
UPPER 40S. NORTHWEST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
ILZ012-210930-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 20 20
MAX TEMP (24HR TREND) 75 (+21) 74
MIN RH % (24HR TREND) 47 (+14) 43
MIN TEMP (24HR TREND) 43 (+15) 49
MAX RH % (24HR TREND) 81 (-12) 96
20FT WIND AM (MPH) SW 12 E 5-6
20FT WIND PM (MPH) S 8-11 SW 12 W 5 SE 5-6
PEAK WIND GUSTS (MPH) 23 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2400 2300
MAX MIXING HGT (FT) 4200 4300
TRANSPORT WND (MPH) W 20 SE 6
VENT RATE (MPH-FT) 88200 30100
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 15 TO
20 MPH.
THURSDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLOUDY WITH SHOWERS
LIKELY AFTER MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS AROUND
15 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE LOWER 70S. SOUTH WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
UPPER 40S. NORTHWEST WINDS AROUND 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ005-210930-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 73 (+20) 73
MIN RH % (24HR TREND) 49 (+18) 43
MIN TEMP (24HR TREND) 42 (+15) 45
MAX RH % (24HR TREND) 83 (-10) 92
20FT WIND AM (MPH) SW 10-12 E 5-6
20FT WIND PM (MPH) S 8-11 W 10-12 LGT/VAR SE 5-6
PEAK WIND GUSTS (MPH) 23 25
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2300 2000
MAX MIXING HGT (FT) 3700 4100
TRANSPORT WND (MPH) W 18 SE 8
VENT RATE (MPH-FT) 66600 32800
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
SOUTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
10 TO 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING, THEN MOSTLY CLOUDY WITH SHOWERS
LIKELY AFTER MIDNIGHT. LOWS AROUND 60. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE LOWER 70S. SOUTHWEST WINDS AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
MID 40S. NORTHWEST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 40S. NORTHEAST WINDS AROUND 5 MPH.
ILZ004-210930-
BOONE-
INCLUDING THE CITY OF BELVIDERE
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 74 (+20) 74
MIN RH % (24HR TREND) 48 (+15) 40
MIN TEMP (24HR TREND) 43 (+16) 47
MAX RH % (24HR TREND) 84 (-9) 92
20FT WIND AM (MPH) SW 10-11 E 6
20FT WIND PM (MPH) S 8-10 W 10-11 LGT/VAR SE 6
PEAK WIND GUSTS (MPH) 21 23
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2300 2100
MAX MIXING HGT (FT) 3700 4300
TRANSPORT WND (MPH) W 17 SE 8
VENT RATE (MPH-FT) 62900 34400
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
AROUND 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS IN
THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT. LOWS IN THE
UPPER 50S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE LOWER 70S. SOUTHWEST WINDS AROUND 15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. COOLER. LOWS IN THE MID 40S. NORTHWEST WINDS 5 TO
10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ011-210930-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 20 20
MAX TEMP (24HR TREND) 75 (+20) 74
MIN RH % (24HR TREND) 46 (+12) 44
MIN TEMP (24HR TREND) 43 (+14) 49
MAX RH % (24HR TREND) 84 (-3) 96
20FT WIND AM (MPH) SW 10-15 E 5-6
20FT WIND PM (MPH) S 8-11 SW 10-15 W 5 SE 5-6
PEAK WIND GUSTS (MPH) 21 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2400 2300
MAX MIXING HGT (FT) 4300 4500
TRANSPORT WND (MPH) W 20 S 8
VENT RATE (MPH-FT) 90300 36000
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
15 TO 20 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS IN
THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT. LOWS AROUND 60.
SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE AFTERNOON.
HIGHS IN THE LOWER 70S. SOUTHWEST WINDS AROUND 15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. COOLER. LOWS IN THE MID 40S. NORTHWEST WINDS AROUND
10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
5 TO 10 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ003-210930-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 75 (+20) 75
MIN RH % (24HR TREND) 45 (+14) 40
MIN TEMP (24HR TREND) 44 (+17) 47
MAX RH % (24HR TREND) 82 (-8) 94
20FT WIND AM (MPH) SW 9-11 E 6
20FT WIND PM (MPH) S 8-10 W 9-11 LGT/VAR SE 6
PEAK WIND GUSTS (MPH) 21 21
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2400 2100
MAX MIXING HGT (FT) 3800 4600
TRANSPORT WND (MPH) W 16 S 9
VENT RATE (MPH-FT) 60800 41400
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHEAST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
15 TO 20 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE UPPER 50S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 70. SOUTHWEST WINDS
10 TO 15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. COOLER. LOWS IN THE MID 40S.
NORTHWEST WINDS AROUND 10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ008-210930-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 10 20
MAX TEMP (24HR TREND) 76 (+20) 76
MIN RH % (24HR TREND) 46 (+17) 41
MIN TEMP (24HR TREND) 44 (+17) 48
MAX RH % (24HR TREND) 84 (-6) 97
20FT WIND AM (MPH) SW 10-12 E 5-6
20FT WIND PM (MPH) S 9-11 W 10-12 LGT/VAR S 5-6
PEAK WIND GUSTS (MPH) 23 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2400 2200
MAX MIXING HGT (FT) 4000 4700
TRANSPORT WND (MPH) W 18 S 9
VENT RATE (MPH-FT) 72000 42300
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHEAST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
15 TO 20 MPH.
THURSDAY NIGHT
A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER
50S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 70S. SOUTHWEST
WINDS 10 TO 15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. COOLER. LOWS IN THE MID 40S. NORTHWEST WINDS AROUND
10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ010-210930-
LEE-
INCLUDING THE CITY OF DIXON
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY MCLEAR MCLEAR
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 20 20
MAX TEMP (24HR TREND) 76 (+20) 76
MIN RH % (24HR TREND) 45 (+19) 45
MIN TEMP (24HR TREND) 44 (+15) 51
MAX RH % (24HR TREND) 83 (-2) 97
20FT WIND AM (MPH) SW 11-12 SE 5-6
20FT WIND PM (MPH) S 8-10 SW 11-12 W 5 S 5-6
PEAK WIND GUSTS (MPH) 23 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2400 2200
MAX MIXING HGT (FT) 4300 4600
TRANSPORT WND (MPH) W 20 S 8
VENT RATE (MPH-FT) 90300 36800
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHEAST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
15 TO 20 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS IN
THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT. LOWS IN THE
UPPER 50S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 70S. SOUTHWEST
WINDS 10 TO 15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. COOLER. LOWS IN THE MID 40S. NORTHWEST WINDS AROUND
10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS AROUND
10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ019-210930-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 40
MAX TEMP (24HR TREND) 77 (+19) 78
MIN RH % (24HR TREND) 41 (+17) 45
MIN TEMP (24HR TREND) 45 (+16) 53
MAX RH % (24HR TREND) 78 (-6) 94
20FT WIND AM (MPH) SW 10-15 SW 5
20FT WIND PM (MPH) S 8-9 SW 10-15 W 6-7 S 5
PEAK WIND GUSTS (MPH) 21 27
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.00
11 AM MIXING HGT (FT) 2600 2200
MAX MIXING HGT (FT) 5000 4600
TRANSPORT WND (MPH) SW 26 S 6
VENT RATE (MPH-FT) 130000 32200
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. SOUTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS
15 TO 20 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTHWEST
WINDS AROUND 15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. COOLER. LOWS IN THE UPPER 40S. NORTHWEST WINDS 5 TO
10 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS AROUND
10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ020-210930-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE NONE TSTMS NONE
CHANCE PRECIP (%) 20 30
MAX TEMP (24HR TREND) 76 (+20) 75
MIN RH % (24HR TREND) 43 (+10) 45
MIN TEMP (24HR TREND) 44 (+15) 52
MAX RH % (24HR TREND) 80 (-12) 95
20FT WIND AM (MPH) SW 10-15 E 5
20FT WIND PM (MPH) S 8-10 SW 10-15 W 5-6 S 5
PEAK WIND GUSTS (MPH) 19 25
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.00
11 AM MIXING HGT (FT) 2500 2200
MAX MIXING HGT (FT) 4900 4500
TRANSPORT WND (MPH) W 26 S 8
VENT RATE (MPH-FT) 127400 36000
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 10 TO
15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. SHOWERS LIKELY AFTER MIDNIGHT. LOWS IN THE LOWER
60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH WINDS
AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
UPPER 40S. NORTHWEST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH
WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS AROUND
10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ021-210930-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 40
MAX TEMP (24HR TREND) 78 (+20) 77
MIN RH % (24HR TREND) 41 (+14) 46
MIN TEMP (24HR TREND) 45 (+15) 54
MAX RH % (24HR TREND) 78 (-14) 94
20FT WIND AM (MPH) SW 10-15 NW 5
20FT WIND PM (MPH) S 8-10 SW 10-15 SW 6-7 S 5
PEAK WIND GUSTS (MPH) 19 26
PRECIP AMOUNT (IN) 0.00 0.00 0.10-0.25 0.00
11 AM MIXING HGT (FT) 2700 2200
MAX MIXING HGT (FT) 5200 4700
TRANSPORT WND (MPH) SW 28 S 6
VENT RATE (MPH-FT) 150800 32900
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS
10 TO 15 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH WINDS
AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
UPPER 40S. WEST WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER
MIDNIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS 5 TO
10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS AROUND 5 MPH.
ILZ022-210930-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 40
MAX TEMP (24HR TREND) 77 (+21) 76
MIN RH % (24HR TREND) 42 (+9) 46
MIN TEMP (24HR TREND) 44 (+13) 53
MAX RH % (24HR TREND) 80 (-7) 98
20FT WIND AM (MPH) SW 10-15 N 5
20FT WIND PM (MPH) S 8-10 SW 10-15 SW 5-7 S 5
PEAK WIND GUSTS (MPH) 20 27
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.10-0.25 0.00
11 AM MIXING HGT (FT) 2600 2300
MAX MIXING HGT (FT) 5100 4500
TRANSPORT WND (MPH) SW 28 S 6
VENT RATE (MPH-FT) 147900 31500
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 10 TO
15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE
LOWER 60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH WINDS
10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS AROUND
50. WEST WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER MIDNIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST
WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ032-210930-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 40 10
MAX TEMP (24HR TREND) 78 (+19) 78
MIN RH % (24HR TREND) 40 (+18) 46
MIN TEMP (24HR TREND) 46 (+16) 57
MAX RH % (24HR TREND) 80 (-6) 92
20FT WIND AM (MPH) SW 10-15 W 6
20FT WIND PM (MPH) S 8-10 SW 10-15 SW 8-10 SW 6
PEAK WIND GUSTS (MPH) 21 29 21
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.10-0.25 0.00
11 AM MIXING HGT (FT) 2600 2400
MAX MIXING HGT (FT) 5100 4600
TRANSPORT WND (MPH) SW 31 S 6
VENT RATE (MPH-FT) 158100 32200
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. SOUTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS
15 TO 20 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH WINDS
AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. COOLER. LOWS IN THE
UPPER 40S. WEST WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER
MIDNIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 70. NORTH WINDS AROUND
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ023-210930-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE NONE TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 50
MAX TEMP (24HR TREND) 78 (+22) 76
MIN RH % (24HR TREND) 40 (+9) 48
MIN TEMP (24HR TREND) 44 (+13) 55
MAX RH % (24HR TREND) 79 (-19) 96
20FT WIND AM (MPH) SW 10-15 NW 5
20FT WIND PM (MPH) S 7-10 SW 10-15 SW 5-8 SW 5
PEAK WIND GUSTS (MPH) 20 28 20
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.10-0.25 0.00
11 AM MIXING HGT (FT) 2600 2400
MAX MIXING HGT (FT) 5300 4900
TRANSPORT WND (MPH) SW 29 S 6
VENT RATE (MPH-FT) 159000 34300
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S.
SOUTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS
10 TO 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE
LOWER 60S. SOUTH WINDS AROUND 15 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S. SOUTH WINDS
AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. COOLER. LOWS AROUND 50. NORTHWEST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
ILZ039-210930-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE NONE SHOWERS TSTMS NONE
CHANCE PRECIP (%) 40 50 10
MAX TEMP (24HR TREND) 78 (+19) 77
MIN RH % (24HR TREND) 38 (+15) 47
MIN TEMP (24HR TREND) 45 (+14) 58
MAX RH % (24HR TREND) 77 (-11) 87
20FT WIND AM (MPH) SW 15-20 W 7-8
20FT WIND PM (MPH) S 7-10 SW 15-20 SW 9-11 SW 7-8
PEAK WIND GUSTS (MPH) 20 29 21
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 2600 2900
MAX MIXING HGT (FT) 5000 4500
TRANSPORT WND (MPH) SW 33 SW 8
VENT RATE (MPH-FT) 165000 36000
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTH WINDS
AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS
15 TO 20 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS AROUND 60.
SOUTH WINDS AROUND 15 MPH.
FRIDAY
SHOWERS LIKELY IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S.
SOUTH WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. COOLER.
LOWS AROUND 50. WEST WINDS AROUND 10 MPH, BECOMING NORTHWEST
AFTER MIDNIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 70. NORTH WINDS AROUND
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS AROUND 10 MPH.
ILZ033-210930-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE NONE SHOWERS TSTMS NONE
CHANCE PRECIP (%) 40 50 10
MAX TEMP (24HR TREND) 78 (+20) 77
MIN RH % (24HR TREND) 37 (+8) 46
MIN TEMP (24HR TREND) 44 (+13) 57
MAX RH % (24HR TREND) 73 (-21) 87
20FT WIND AM (MPH) SW 10-15 W 5
20FT WIND PM (MPH) S 7-10 SW 10-15 SW 7-9 SW 5
PEAK WIND GUSTS (MPH) 20 29 21
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 2600 2800
MAX MIXING HGT (FT) 5200 4800
TRANSPORT WND (MPH) SW 32 SW 6
VENT RATE (MPH-FT) 166400 33600
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. SOUTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS
10 TO 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS AROUND 60.
SOUTH WINDS AROUND 15 MPH.
FRIDAY
SHOWERS LIKELY IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S.
SOUTH WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. COOLER.
LOWS AROUND 50. WEST WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER
MIDNIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS AROUND 5 MPH.
INZ010-210930-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE NONE SHOWERS TSTMS NONE
CHANCE PRECIP (%) 40 50 10
MAX TEMP (24HR TREND) 77 (+22) 75
MIN RH % (24HR TREND) 37 (+4) 47
MIN TEMP (24HR TREND) 43 (+13) 55
MAX RH % (24HR TREND) 76 (-23) 93
20FT WIND AM (MPH) SW 10-15 LGT/VAR
20FT WIND PM (MPH) S 7-9 SW 10-15 SW 6-9 LGT/VAR
PEAK WIND GUSTS (MPH) 21 29 20
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.00
11 AM MIXING HGT (FT) 2600 2500
MAX MIXING HGT (FT) 5300 5100
TRANSPORT WND (MPH) SW 31 SW 5
VENT RATE (MPH-FT) 164300 30600
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 10 TO
15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY
CLOUDY WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS AROUND 60.
SOUTH WINDS AROUND 10 MPH.
FRIDAY
SHOWERS LIKELY IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S.
SOUTH WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. COOLER.
LOWS AROUND 50. WEST WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER
MIDNIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS AROUND 5 MPH.
INZ011-210930-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
402 PM CDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE NONE SHOWERS TSTMS NONE
CHANCE PRECIP (%) 40 50 10
MAX TEMP (24HR TREND) 77 (+23) 75
MIN RH % (24HR TREND) 36 (+5) 47
MIN TEMP (24HR TREND) 42 (+13) 55
MAX RH % (24HR TREND) 74 (-26) 93
20FT WIND AM (MPH) SW 10-15 LGT/VAR
20FT WIND PM (MPH) S 6-9 SW 10-15 SW 6-8 SW 4-5
PEAK WIND GUSTS (MPH) 21 29 19
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.00
11 AM MIXING HGT (FT) 2500 2500
MAX MIXING HGT (FT) 5300 5100
TRANSPORT WND (MPH) SW 31 SW 5
VENT RATE (MPH-FT) 164300 30600
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. SOUTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTH WINDS 10 TO
15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS AROUND 10 MPH.
FRIDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
70S. SOUTH WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. COOLER.
LOWS IN THE LOWER 50S. WEST WINDS AROUND 5 MPH, BECOMING
NORTHWEST AFTER MIDNIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS AROUND 5 MPH.
INZ019-210930-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
502 PM EDT MON APR 20 2026
TONIGHT TUE TUE NIGHT WED
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE NONE SHOWERS TSTMS NONE
CHANCE PRECIP (%) 40 50 10
MAX TEMP (24HR TREND) 76 (+21) 76
MIN RH % (24HR TREND) 37 (+2) 48
MIN TEMP (24HR TREND) 43 (+13) 57
MAX RH % (24HR TREND) 73 (-21) 86
20FT WIND AM (MPH) SW 10-15 W 6
20FT WIND PM (MPH) S 6-9 SW 10-15 SW 8-9 SW 6
PEAK WIND GUSTS (MPH) 21 29 21
PRECIP AMOUNT (IN) 0.00 0.00 0.10-0.25 0.00
11 AM MIXING HGT (FT) 2400 2800
MAX MIXING HGT (FT) 4900 4500
TRANSPORT WND (MPH) SW 32 SW 5
VENT RATE (MPH-FT) 156800 27000
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. SOUTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
10 TO 15 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTH WINDS 10 TO 15 MPH.
FRIDAY
SHOWERS LIKELY IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 70S.
SOUTHWEST WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. WEST WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER
MIDNIGHT.
SATURDAY
PARTLY SUNNY IN THE MORNING THEN CLEARING. HIGHS IN
THE UPPER 60S. NORTH WINDS AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS AROUND 5 MPH.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO 10 MPH.
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