684
FNUS53 KLOT 171035
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
435 AM CST WED DEC 17 2025
DISCUSSION
HIGH PRESSURE WILL BRIEFLY MOVE OVER THE REGION TODAY, RESULTING
IN LOW MIXING HEIGHTS AND WINDS TURNING OUT OF THE SOUTHEAST THIS
AFTERNOON. A STRONG STORM SYSTEM WILL THEN PUSH ACROSS THE GREAT
LAKES REGION TONIGHT THROUGH THURSDAY. RAIN AND DRIZZLE WILL
EXPAND RAPIDLY ACROSS THE AREA LATE TONIGHT INTO THURSDAY MORNING.
A COLD FRONT WILL THEN USHER IN A PERIOD OF COLDER CONDITIONS
THURSDAY NIGHT THROUGH FRIDAY WITH INTERMITTENT SHOWER SHOWERS OR
FLURRIES. AFTER A BRIEF WARMUP ON SATURDAY, ANOTHER COLD FRONT
WILL MOVE THROUGH THE AREA SATURDAY NIGHT. PRECIPITATION CHANCES
APPEAR LOW OVER THE WEEKEND AND INTO EARLY NEXT WEEK.
ILZ014-172215-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 42 (+4) 50
MIN RH % (24HR TREND) 60 (+1) 78
MIN TEMP (24HR TREND) 32 (-1) 13
MAX RH % (24HR TREND) 98 (+14) 87
20FT WIND AM (MPH) NW 5-6 S 10-15
20FT WIND PM (MPH) S 5-6 S 10-15 SW 10-15 W 15-20
PEAK WIND GUSTS (MPH) 28 31 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 1200 1300
MAX MIXING HGT (FT) 1300 1400
TRANSPORT WND (MPH) NW 4 SW 24
VENT RATE (MPH-FT) 6500 33600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. WEST WINDS
AROUND 5 MPH.
ILZ006-172215-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY PCLDY
PRECIP TYPE NONE RAIN RAIN SNOW
CHANCE PRECIP (%) 60 100 30
MAX TEMP (24HR TREND) 40 (0) 47
MIN RH % (24HR TREND) 64 (+4) 84
MIN TEMP (24HR TREND) 30 (-2) 12
MAX RH % (24HR TREND) 97 (+16) 85
20FT WIND AM (MPH) NW 5-6 S 10-15
20FT WIND PM (MPH) S 5-6 S 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 28 30 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 1000 1200
MAX MIXING HGT (FT) 1100 1300
TRANSPORT WND (MPH) NW 10 W 18
VENT RATE (MPH-FT) 11000 23400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE LOWER 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 16. WEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 18. WEST WINDS AROUND 5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTH WINDS 5 TO
10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS AROUND 30. SOUTH
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
INZ001-172215-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 42 (+6) 49
MIN RH % (24HR TREND) 66 (-1) 81
MIN TEMP (24HR TREND) 31 (-2) 15
MAX RH % (24HR TREND) 98 (+14) 93
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) S 4-5 S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 27 32 36
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 1200 1200
MAX MIXING HGT (FT) 1400 1500
TRANSPORT WND (MPH) NW 6 S 27
VENT RATE (MPH-FT) 9800 42000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. WEST WINDS
AROUND 5 MPH.
INZ002-172215-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 60 100 30
MAX TEMP (24HR TREND) 39 (+3) 48
MIN RH % (24HR TREND) 72 (+7) 82
MIN TEMP (24HR TREND) 31 (-2) 16
MAX RH % (24HR TREND) 97 (+14) 93
20FT WIND AM (MPH) W 5 S 15-20
20FT WIND PM (MPH) S 5 S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 28 33 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 1300 1200
MAX MIXING HGT (FT) 1500 1500
TRANSPORT WND (MPH) NW 8 S 28
VENT RATE (MPH-FT) 12000 43500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE LOWER 40S.
SOUTH WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 20S. WEST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 30. WEST WINDS AROUND
5 MPH.
ILZ013-172215-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 41 (+3) 49
MIN RH % (24HR TREND) 64 (+1) 83
MIN TEMP (24HR TREND) 31 (-1) 13
MAX RH % (24HR TREND) 100 (+16) 87
20FT WIND AM (MPH) NW 5-6 S 10-15
20FT WIND PM (MPH) S 5-6 S 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 28 31 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 1100 1300
MAX MIXING HGT (FT) 1100 1300
TRANSPORT WND (MPH) W 4 S 25
VENT RATE (MPH-FT) 5500 32500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 20. WEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS AROUND 30. NORTHWEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 20. NORTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTHWEST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ012-172215-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 38 (+3) 47
MIN RH % (24HR TREND) 70 (-1) 86
MIN TEMP (24HR TREND) 30 (0) 12
MAX RH % (24HR TREND) 100 (+12) 87
20FT WIND AM (MPH) LGT/VAR S 10-15
20FT WIND PM (MPH) S 4-5 S 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 27 32 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 900 1100
MAX MIXING HGT (FT) 1100 1200
TRANSPORT WND (MPH) NW 8 W 19
VENT RATE (MPH-FT) 8800 24000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. NORTHWEST WINDS
10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE LOWER 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 18. NORTHWEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 18. NORTH WINDS AROUND 5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS AROUND 30.
SOUTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ005-172215-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 38 (+2) 45
MIN RH % (24HR TREND) 69 (+4) 87
MIN TEMP (24HR TREND) 29 (-2) 10
MAX RH % (24HR TREND) 99 (+13) 86
20FT WIND AM (MPH) NW 5-6 SW 10-15
20FT WIND PM (MPH) S 5-6 S 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 27 32 34
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 800 1000
MAX MIXING HGT (FT) 1000 1300
TRANSPORT WND (MPH) NW 5 W 19
VENT RATE (MPH-FT) 6000 26000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 20S. NORTHWEST WINDS
10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 20. SOUTH WINDS 10 TO
15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE LOWER 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 15. WEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 16. NORTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE UPPER
20S. SOUTH WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS AROUND 40. SOUTHWEST WINDS AROUND
10 MPH, BECOMING WEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ004-172215-
BOONE-
INCLUDING THE CITY OF BELVIDERE
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 37 (+4) 44
MIN RH % (24HR TREND) 72 (0) 84
MIN TEMP (24HR TREND) 28 (-2) 9
MAX RH % (24HR TREND) 100 (+10) 84
20FT WIND AM (MPH) LGT/VAR SW 10-15
20FT WIND PM (MPH) SE 4-5 S 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 27 33 33
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 600 800
MAX MIXING HGT (FT) 900 1400
TRANSPORT WND (MPH) N 5 W 20
VENT RATE (MPH-FT) 5400 29400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 19. SOUTH WINDS 10 TO
15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS AROUND 40.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 14. NORTHWEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE MID 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 15. NORTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE UPPER
20S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS AROUND 40. SOUTHWEST WINDS AROUND
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ011-172215-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 37 (+4) 45
MIN RH % (24HR TREND) 73 (-4) 85
MIN TEMP (24HR TREND) 29 (+1) 11
MAX RH % (24HR TREND) 100 (+11) 83
20FT WIND AM (MPH) NW 5 SW 15-20
20FT WIND PM (MPH) S 5 S 10-15 W 15-20 W 15-20
PEAK WIND GUSTS (MPH) 27 33 36
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 700 1000
MAX MIXING HGT (FT) 1000 1300
TRANSPORT WND (MPH) NW 4 W 20
VENT RATE (MPH-FT) 5000 27300
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE LOWER 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 17. NORTHWEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 18. NORTH WINDS AROUND 5 MPH, BECOMING
EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS AROUND 30.
SOUTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ003-172215-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 36 (+2) 44
MIN RH % (24HR TREND) 72 (0) 79
MIN TEMP (24HR TREND) 29 (-1) 9
MAX RH % (24HR TREND) 99 (+11) 81
20FT WIND AM (MPH) LGT/VAR SW 15-20
20FT WIND PM (MPH) SE 4-5 S 10-15 W 15-20 W 15-20
PEAK WIND GUSTS (MPH) 26 33 33
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.10-0.25 0.00
11 AM MIXING HGT (FT) 700 800
MAX MIXING HGT (FT) 1000 1500
TRANSPORT WND (MPH) N 8 W 20
VENT RATE (MPH-FT) 8000 31500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 20S. WEST WINDS AROUND
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 19. SOUTH WINDS 10 TO
15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTHWEST WINDS AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 14. NORTHWEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 15. NORTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE UPPER
20S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS AROUND 40. SOUTHWEST WINDS AROUND
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ008-172215-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 36 (+2) 45
MIN RH % (24HR TREND) 74 (0) 81
MIN TEMP (24HR TREND) 29 (-1) 9
MAX RH % (24HR TREND) 99 (+12) 82
20FT WIND AM (MPH) LGT/VAR SW 10-15
20FT WIND PM (MPH) LGT/VAR S 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 27 33 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 800 900
MAX MIXING HGT (FT) 1000 1800
TRANSPORT WND (MPH) N 3 W 24
VENT RATE (MPH-FT) 3000 43200
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS AROUND
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 20. SOUTH WINDS 10 TO
15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE LOWER 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 15. NORTHWEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 16. NORTH WINDS AROUND 5 MPH, BECOMING
EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE UPPER
20S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ010-172215-
LEE-
INCLUDING THE CITY OF DIXON
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 36 (+1) 46
MIN RH % (24HR TREND) 76 (+4) 82
MIN TEMP (24HR TREND) 30 (0) 10
MAX RH % (24HR TREND) 99 (+11) 82
20FT WIND AM (MPH) LGT/VAR SW 10-15
20FT WIND PM (MPH) LGT/VAR SE 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 27 33 36
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 900 900
MAX MIXING HGT (FT) 1000 1800
TRANSPORT WND (MPH) E 3 W 24
VENT RATE (MPH-FT) 3000 43200
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
PARTLY SUNNY. NOT AS COLD. HIGHS IN THE LOWER 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 18. NORTHWEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 18. NORTH WINDS AROUND 5 MPH, BECOMING
EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS AROUND 30.
SOUTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
ILZ019-172215-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY MCLDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 39 (+3) 47
MIN RH % (24HR TREND) 74 (+3) 78
MIN TEMP (24HR TREND) 30 (0) 13
MAX RH % (24HR TREND) 98 (+13) 83
20FT WIND AM (MPH) LGT/VAR SW 15-20
20FT WIND PM (MPH) LGT/VAR SE 10-15 W 15-20 W 15-20
PEAK WIND GUSTS (MPH) 28 33 37
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 900 1300
MAX MIXING HGT (FT) 1100 1500
TRANSPORT WND (MPH) N 4 W 19
VENT RATE (MPH-FT) 5500 30000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTH WINDS AROUND 15 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. NORTHWEST
WINDS AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 20. NORTH WINDS AROUND 5 MPH, BECOMING
NORTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ020-172215-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 39 (+3) 49
MIN RH % (24HR TREND) 72 (0) 85
MIN TEMP (24HR TREND) 30 (0) 13
MAX RH % (24HR TREND) 100 (+11) 88
20FT WIND AM (MPH) LGT/VAR S 10-15
20FT WIND PM (MPH) LGT/VAR S 10-15 W 10-15 W 15-20
PEAK WIND GUSTS (MPH) 27 31 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 900 1200
MAX MIXING HGT (FT) 1100 1300
TRANSPORT WND (MPH) NW 6 W 18
VENT RATE (MPH-FT) 7700 23400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 20. NORTHWEST WINDS
AROUND 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 20. NORTH WINDS AROUND 5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ021-172215-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 39 (+2) 50
MIN RH % (24HR TREND) 77 (+6) 84
MIN TEMP (24HR TREND) 31 (-1) 14
MAX RH % (24HR TREND) 100 (+12) 90
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) LGT/VAR S 10-15 W 15-20 W 15-20
PEAK WIND GUSTS (MPH) 27 31 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 1000 1400
MAX MIXING HGT (FT) 1200 1400
TRANSPORT WND (MPH) NW 5 SW 26
VENT RATE (MPH-FT) 7200 36400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 30. WEST WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTHEAST WINDS AROUND
5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ022-172215-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 30
MAX TEMP (24HR TREND) 40 (+3) 50
MIN RH % (24HR TREND) 69 (+1) 84
MIN TEMP (24HR TREND) 31 (-1) 14
MAX RH % (24HR TREND) 100 (+14) 92
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) LGT/VAR S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 28 31 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 1000 1400
MAX MIXING HGT (FT) 1200 1400
TRANSPORT WND (MPH) NW 4 S 27
VENT RATE (MPH-FT) 6000 39200
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ032-172215-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY MCLDY PCLDY
PRECIP TYPE NONE RAIN SNOW/RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 39 (+2) 51
MIN RH % (24HR TREND) 79 (+14) 83
MIN TEMP (24HR TREND) 31 (0) 13
MAX RH % (24HR TREND) 99 (+13) 91
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) LGT/VAR S 10-15 W 15-20 W 15-20
PEAK WIND GUSTS (MPH) 29 33 36
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.00
11 AM MIXING HGT (FT) 600 1400
MAX MIXING HGT (FT) 900 1400
TRANSPORT WND (MPH) N 5 SW 28
VENT RATE (MPH-FT) 5400 40600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 30. WEST WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
PARTLY SUNNY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS AROUND 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE MID 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH,
BECOMING EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ023-172215-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 40 (+4) 51
MIN RH % (24HR TREND) 76 (+6) 82
MIN TEMP (24HR TREND) 31 (-1) 14
MAX RH % (24HR TREND) 100 (+14) 94
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) LGT/VAR S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 27 31 34
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 900 1400
MAX MIXING HGT (FT) 1200 1500
TRANSPORT WND (MPH) S 4 SW 27
VENT RATE (MPH-FT) 6000 42000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH,
BECOMING NORTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ039-172215-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY PCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 39 (+2) 51
MIN RH % (24HR TREND) 80 (+14) 82
MIN TEMP (24HR TREND) 30 (-2) 13
MAX RH % (24HR TREND) 100 (+14) 91
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) LGT/VAR S 10-15 W 15-20 W 15-20
PEAK WIND GUSTS (MPH) 28 33 35
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 600 1400
MAX MIXING HGT (FT) 900 1500
TRANSPORT WND (MPH) NE 3 SW 28
VENT RATE (MPH-FT) 2700 43500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS 10 TO 15 MPH.
SATURDAY
PARTLY SUNNY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS AROUND 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE MID 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH,
BECOMING NORTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 30. NORTHWEST WINDS
AROUND 5 MPH.
ILZ033-172215-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY PCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 39 (+2) 51
MIN RH % (24HR TREND) 78 (+11) 80
MIN TEMP (24HR TREND) 30 (-2) 14
MAX RH % (24HR TREND) 99 (+15) 91
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) LGT/VAR S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 27 32 34
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 800 1400
MAX MIXING HGT (FT) 1100 1600
TRANSPORT WND (MPH) N 3 S 27
VENT RATE (MPH-FT) 3300 44800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE MID 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS
AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 30S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 30. SOUTHEAST WINDS
AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
INZ010-172215-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 39 (+3) 50
MIN RH % (24HR TREND) 77 (+7) 83
MIN TEMP (24HR TREND) 31 (-1) 15
MAX RH % (24HR TREND) 99 (+13) 93
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) S 4-5 S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 26 32 34
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 900 1300
MAX MIXING HGT (FT) 1300 1600
TRANSPORT WND (MPH) W 4 S 29
VENT RATE (MPH-FT) 6500 48000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
AROUND 5 MPH, INCREASING TO AROUND 15 MPH AFTER MIDNIGHT.
SATURDAY
MOSTLY CLOUDY. NOT AS COOL. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS
AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
INZ011-172215-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
435 AM CST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 38 (+2) 49
MIN RH % (24HR TREND) 77 (+12) 85
MIN TEMP (24HR TREND) 31 (-2) 16
MAX RH % (24HR TREND) 98 (+14) 96
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) S 4-5 S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 27 32 33
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 800 1200
MAX MIXING HGT (FT) 1300 1600
TRANSPORT WND (MPH) W 4 S 29
VENT RATE (MPH-FT) 6500 48000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
AROUND 5 MPH, INCREASING TO AROUND 15 MPH AFTER MIDNIGHT.
SATURDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS AROUND 5 MPH,
BECOMING NORTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 30S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 30. WEST WINDS AROUND
5 MPH.
INZ019-172215-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
535 AM EST WED DEC 17 2025
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE RAIN RAIN SNOW/RAIN
CHANCE PRECIP (%) 70 100 20
MAX TEMP (24HR TREND) 38 (+1) 50
MIN RH % (24HR TREND) 81 (+15) 82
MIN TEMP (24HR TREND) 31 (-2) 15
MAX RH % (24HR TREND) 100 (+22) 96
20FT WIND AM (MPH) LGT/VAR S 15-20
20FT WIND PM (MPH) S 4-5 S 10-15 SW 15-20 W 15-20
PEAK WIND GUSTS (MPH) 27 32 34
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 700 1300
MAX MIXING HGT (FT) 1100 1600
TRANSPORT WND (MPH) W 3 S 29
VENT RATE (MPH-FT) 3300 48000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 20S. WEST WINDS 10 TO
15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTH WINDS
10 TO 15 MPH.
SATURDAY
PARTLY SUNNY. NOT AS COLD. HIGHS IN THE MID 40S.
SOUTHWEST WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. SOUTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHWEST AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. COLDER. HIGHS IN THE MID 30S. NORTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. NORTH WINDS
AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 30S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 30. NORTHWEST WINDS
AROUND 5 MPH.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page