633
FNUS53 KLOT 181103
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
503 AM CST THU DEC 18 2025
DISCUSSION
WIDESPREAD DRIZZLE AND SHOWERS WILL OCCUR THIS MORNING. SOUTHERLY
WINDS WILL INCREASE THIS MORNING AND EARLY AFTERNOON, WITH GUSTS
NEAR 40 MPH. A STRONG COLD FRONT WILL THEN SHIFT WINDS OUT OF THE
WEST WITH MUCH COLDER AIR ARRIVING THIS EVENING AND OVERNIGHT. SOME
GUSTY SNOW SHOWERS AND LOCALIZED COATINGS OF SNOW ARE EXPECTED
THIS EVENING BEFORE ACTIVITY TAPERS EARLY FRIDAY MORNING. AFTER A
BRIEF WARMUP ON SATURDAY, ANOTHER COLD FRONT WILL MOVE THROUGH THE
AREA SATURDAY NIGHT WHICH MAY BRIEF A SMALL CHANCE FOR SOME LIGHT
SNOW TO AREAS MAINLY NORTH OF I-80. PRECIPITATION CHANCES
THEREAFTER APPEAR LOW INTO EARLY NEXT WEEK.
ILZ014-182230-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 51 (+9) 27
MIN RH % (24HR TREND) 81 (+20) 53
MIN TEMP (24HR TREND) 10 (-23) 20
MAX RH % (24HR TREND) 86 (-5) 72
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) SW 15-20 W 15-20 W 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 31 25
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2400
MAX MIXING HGT (FT) 1900 3100
TRANSPORT WND (MPH) W 24 W 29
VENT RATE (MPH-FT) 45600 93000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 17. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE UPPER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 20. WEST WINDS AROUND 5 MPH, BECOMING
SOUTH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTH WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ006-182230-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY MCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 50 (+10) 25
MIN RH % (24HR TREND) 77 (+12) 55
MIN TEMP (24HR TREND) 9 (-23) 19
MAX RH % (24HR TREND) 81 (-13) 75
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) SW 15-20 W 15-20 W 10-15 S 8-12
PEAK WIND GUSTS (MPH) 36 36 33 23
PRECIP AMOUNT (IN) 0.10-0.25 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1200 2200
MAX MIXING HGT (FT) 1600 2600
TRANSPORT WND (MPH) W 24 W 28
VENT RATE (MPH-FT) 38400 75400
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS AROUND 40. SOUTHWEST WINDS 10 TO
15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 13. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE MID 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 16. WEST WINDS AROUND 5 MPH, BECOMING
SOUTH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTH WINDS AROUND 10 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. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE LOWER 30S. EAST WINDS AROUND 5 MPH.
INZ001-182230-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40 10
MAX TEMP (24HR TREND) 51 (+10) 25
MIN RH % (24HR TREND) 81 (+15) 53
MIN TEMP (24HR TREND) 13 (-20) 21
MAX RH % (24HR TREND) 91 (-1) 74
20FT WIND AM (MPH) S 15-20 W 15-20
20FT WIND PM (MPH) SW 15-20 W 15-20 W 15-20 S 10-15
PEAK WIND GUSTS (MPH) 36 36 30 24
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1200 2500
MAX MIXING HGT (FT) 1800 3300
TRANSPORT WND (MPH) W 21 W 32
VENT RATE (MPH-FT) 39600 105600
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 19. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE UPPER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 19. NORTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTH WINDS 5 TO
10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
INZ002-182230-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40 10
MAX TEMP (24HR TREND) 51 (+9) 25
MIN RH % (24HR TREND) 82 (+14) 54
MIN TEMP (24HR TREND) 13 (-21) 20
MAX RH % (24HR TREND) 93 (+5) 74
20FT WIND AM (MPH) S 15-20 W 15-20
20FT WIND PM (MPH) SW 15-20 W 15-20 W 15-20 S 10-15
PEAK WIND GUSTS (MPH) 36 37 32 24
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1200 2900
MAX MIXING HGT (FT) 1600 3600
TRANSPORT WND (MPH) W 23 W 33
VENT RATE (MPH-FT) 36800 118800
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 20. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE UPPER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 19. NORTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTH WINDS
AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHEAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS IN
THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ013-182230-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 51 (+10) 26
MIN RH % (24HR TREND) 84 (+19) 57
MIN TEMP (24HR TREND) 11 (-22) 20
MAX RH % (24HR TREND) 82 (-11) 73
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) SW 15-20 W 15-20 W 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 30 25
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2300
MAX MIXING HGT (FT) 1900 2900
TRANSPORT WND (MPH) W 24 W 29
VENT RATE (MPH-FT) 45600 87000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 17. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE UPPER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 19. WEST WINDS AROUND 5 MPH, BECOMING
SOUTH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTH WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTH
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ012-182230-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY MCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 50 (+12) 25
MIN RH % (24HR TREND) 80 (+8) 58
MIN TEMP (24HR TREND) 9 (-20) 19
MAX RH % (24HR TREND) 84 (-11) 75
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 W 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 31 24
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1200 2200
MAX MIXING HGT (FT) 1600 2700
TRANSPORT WND (MPH) W 21 NW 29
VENT RATE (MPH-FT) 35200 81000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 15. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE MID 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 17. WEST WINDS AROUND 5 MPH, BECOMING
SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTH WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH 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. NORTH
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ005-182230-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY MCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 49 (+11) 25
MIN RH % (24HR TREND) 76 (+7) 60
MIN TEMP (24HR TREND) 8 (-20) 18
MAX RH % (24HR TREND) 84 (-14) 76
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 W 10-15 S 9-12
PEAK WIND GUSTS (MPH) 36 36 31 23
PRECIP AMOUNT (IN) 0.10-0.25 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1100 2000
MAX MIXING HGT (FT) 1500 2100
TRANSPORT WND (MPH) W 23 W 26
VENT RATE (MPH-FT) 34500 54600
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 12. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE LOWER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 15. WEST WINDS AROUND 5 MPH, BECOMING
SOUTH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE MID 30S. SOUTH
WINDS AROUND 10 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. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTH
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. HIGHS AROUND 40. EAST WINDS AROUND
5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE LOWER 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ004-182230-
BOONE-
INCLUDING THE CITY OF BELVIDERE
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 48 (+13) 25
MIN RH % (24HR TREND) 79 (+3) 57
MIN TEMP (24HR TREND) 8 (-15) 17
MAX RH % (24HR TREND) 86 (-12) 76
20FT WIND AM (MPH) S 15-20 NW 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 36 30 21
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1100 1900
MAX MIXING HGT (FT) 1500 2000
TRANSPORT WND (MPH) W 21 NW 24
VENT RATE (MPH-FT) 33000 48000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHWEST
WINDS AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 11. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE LOWER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 14. SOUTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE MID 30S. SOUTH
WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS AROUND 30. 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 UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS AROUND 40. EAST WINDS AROUND
5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S.
SOUTHEAST WINDS AROUND 5 MPH.
ILZ011-182230-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 49 (+13) 25
MIN RH % (24HR TREND) 80 (+3) 56
MIN TEMP (24HR TREND) 9 (-19) 19
MAX RH % (24HR TREND) 84 (-15) 76
20FT WIND AM (MPH) S 15-20 NW 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 30 23
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1200 2000
MAX MIXING HGT (FT) 1600 2300
TRANSPORT WND (MPH) W 23 NW 28
VENT RATE (MPH-FT) 36800 66700
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS AROUND 40. SOUTHWEST WINDS 10 TO
15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 14. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE MID 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 17. SOUTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTH WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ003-182230-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 48 (+12) 25
MIN RH % (24HR TREND) 77 (+4) 55
MIN TEMP (24HR TREND) 8 (-20) 18
MAX RH % (24HR TREND) 86 (-10) 77
20FT WIND AM (MPH) S 10-15 NW 10-15
20FT WIND PM (MPH) W 10-15 W 15-20 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 35 36 28 21
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1100 1900
MAX MIXING HGT (FT) 1800 2100
TRANSPORT WND (MPH) W 23 NW 25
VENT RATE (MPH-FT) 41400 52500
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 11. WEST WINDS AROUND
10 MPH.
SUNDAY
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. SOUTH WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTH WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS AROUND 30. 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, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. EAST
WINDS AROUND 5 MPH.
ILZ008-182230-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 48 (+11) 26
MIN RH % (24HR TREND) 80 (+8) 54
MIN TEMP (24HR TREND) 9 (-19) 18
MAX RH % (24HR TREND) 86 (-11) 79
20FT WIND AM (MPH) S 15-20 NW 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 36 29 23
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1100 1900
MAX MIXING HGT (FT) 2100 2500
TRANSPORT WND (MPH) W 25 NW 27
VENT RATE (MPH-FT) 52500 70000
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS AROUND 40. SOUTHWEST WINDS
AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 13. WEST WINDS AROUND
10 MPH.
SUNDAY
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 17. SOUTH WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTH WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. EAST
WINDS AROUND 5 MPH.
ILZ010-182230-
LEE-
INCLUDING THE CITY OF DIXON
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 49 (+13) 27
MIN RH % (24HR TREND) 83 (+9) 54
MIN TEMP (24HR TREND) 9 (-20) 20
MAX RH % (24HR TREND) 88 (-11) 78
20FT WIND AM (MPH) S 15-20 NW 10-15
20FT WIND PM (MPH) W 15-20 W 20-25 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 29 23
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1100 1900
MAX MIXING HGT (FT) 2000 2600
TRANSPORT WND (MPH) W 25 NW 28
VENT RATE (MPH-FT) 50000 75400
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 15. WEST WINDS AROUND
10 MPH.
SUNDAY
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 19. SOUTHEAST WINDS AROUND 5 MPH.
MONDAY
MOSTLY CLOUDY. NOT AS COLD. HIGHS IN THE UPPER 30S.
SOUTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 20S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 30S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ019-182230-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 50
MAX TEMP (24HR TREND) 52 (+14) 28
MIN RH % (24HR TREND) 83 (+6) 53
MIN TEMP (24HR TREND) 10 (-22) 21
MAX RH % (24HR TREND) 83 (-12) 74
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) W 15-20 W 20-25 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 29 25
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2100
MAX MIXING HGT (FT) 1800 2900
TRANSPORT WND (MPH) W 21 W 29
VENT RATE (MPH-FT) 39600 87000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 18. WEST WINDS AROUND
10 MPH.
SUNDAY
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 20. NORTH WINDS AROUND 5 MPH, BECOMING
SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ020-182230-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+12) 26
MIN RH % (24HR TREND) 83 (+14) 57
MIN TEMP (24HR TREND) 11 (-20) 21
MAX RH % (24HR TREND) 83 (-17) 75
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 W 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 29 24
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2400
MAX MIXING HGT (FT) 1800 3100
TRANSPORT WND (MPH) W 23 W 31
VENT RATE (MPH-FT) 41400 96100
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 17. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE UPPER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 19. NORTH WINDS AROUND 5 MPH, BECOMING
SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTH WINDS
AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ021-182230-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 53 (+15) 27
MIN RH % (24HR TREND) 85 (+4) 57
MIN TEMP (24HR TREND) 11 (-21) 21
MAX RH % (24HR TREND) 85 (-12) 77
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 W 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 36 29 24
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1400 2400
MAX MIXING HGT (FT) 1900 3100
TRANSPORT WND (MPH) W 24 W 31
VENT RATE (MPH-FT) 45600 96100
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 19. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS AROUND 30. 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
SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTH WINDS
AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ022-182230-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+12) 26
MIN RH % (24HR TREND) 85 (+15) 57
MIN TEMP (24HR TREND) 12 (-20) 21
MAX RH % (24HR TREND) 89 (-8) 76
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) SW 15-20 W 15-20 W 10-15 S 10-15
PEAK WIND GUSTS (MPH) 36 37 30 25
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2400
MAX MIXING HGT (FT) 1800 3200
TRANSPORT WND (MPH) W 24 W 32
VENT RATE (MPH-FT) 43200 102400
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 18. WEST WINDS AROUND
10 MPH.
SUNDAY
SUNNY, COLDER. HIGHS IN THE UPPER 20S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 19. NORTHWEST WINDS AROUND 5 MPH,
BECOMING SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTH WINDS
AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE MID 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ032-182230-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 53 (+14) 28
MIN RH % (24HR TREND) 84 (+9) 57
MIN TEMP (24HR TREND) 11 (-20) 20
MAX RH % (24HR TREND) 89 (-6) 80
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) W 15-20 W 15-20 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 37 36 30 26
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1400 2200
MAX MIXING HGT (FT) 1800 3000
TRANSPORT WND (MPH) W 23 W 31
VENT RATE (MPH-FT) 41400 93000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 19. WEST WINDS AROUND
10 MPH.
SUNDAY
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
SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS AROUND 40. SOUTHEAST WINDS AROUND
10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. EAST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ023-182230-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+13) 26
MIN RH % (24HR TREND) 84 (+9) 59
MIN TEMP (24HR TREND) 12 (-18) 21
MAX RH % (24HR TREND) 92 (-5) 78
20FT WIND AM (MPH) S 15-20 W 15-20
20FT WIND PM (MPH) SW 15-20 W 15-20 W 15-20 S 10-15
PEAK WIND GUSTS (MPH) 36 36 30 23
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1400 2400
MAX MIXING HGT (FT) 1700 3100
TRANSPORT WND (MPH) W 24 W 33
VENT RATE (MPH-FT) 40800 102300
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 19. WEST WINDS AROUND
5 MPH.
SUNDAY
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 19. LIGHT WINDS, BECOMING SOUTHEAST
AROUND 5 MPH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. NORTHWEST
WINDS AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ039-182230-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+13) 28
MIN RH % (24HR TREND) 86 (+14) 58
MIN TEMP (24HR TREND) 12 (-19) 20
MAX RH % (24HR TREND) 93 (+2) 79
20FT WIND AM (MPH) S 15-20 W 15-20
20FT WIND PM (MPH) SW 15-20 W 15-20 W 15-20 S 10-15
PEAK WIND GUSTS (MPH) 37 36 30 26
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2300
MAX MIXING HGT (FT) 1800 3000
TRANSPORT WND (MPH) W 25 W 32
VENT RATE (MPH-FT) 45000 96000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 20. WEST WINDS AROUND
10 MPH.
SUNDAY
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 19. NORTH WINDS AROUND 5 MPH, BECOMING
SOUTHEAST AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. SOUTHWEST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. WEST WINDS
AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. EAST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS IN
THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH AFTER
MIDNIGHT.
ILZ033-182230-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY MCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+13) 26
MIN RH % (24HR TREND) 83 (+9) 57
MIN TEMP (24HR TREND) 12 (-19) 20
MAX RH % (24HR TREND) 92 (0) 78
20FT WIND AM (MPH) S 15-20 W 10-15
20FT WIND PM (MPH) SW 15-20 W 15-20 W 10-15 S 10-15
PEAK WIND GUSTS (MPH) 37 36 30 24
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2400
MAX MIXING HGT (FT) 1700 3000
TRANSPORT WND (MPH) W 24 W 33
VENT RATE (MPH-FT) 40800 99000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 19. WEST WINDS AROUND
5 MPH.
SUNDAY
SUNNY, COLDER. HIGHS AROUND 30. NORTHWEST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 19. LIGHT WINDS, BECOMING SOUTHEAST
AROUND 5 MPH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. WEST WINDS
AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF RAIN. LOWS IN
THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH.
INZ010-182230-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+14) 25
MIN RH % (24HR TREND) 85 (+7) 57
MIN TEMP (24HR TREND) 13 (-18) 21
MAX RH % (24HR TREND) 94 (-4) 76
20FT WIND AM (MPH) S 15-20 W 15-20
20FT WIND PM (MPH) SW 15-20 W 15-20 W 15-20 S 1-6
PEAK WIND GUSTS (MPH) 37 36 30 23
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2500
MAX MIXING HGT (FT) 1600 3000
TRANSPORT WND (MPH) S 31 W 33
VENT RATE (MPH-FT) 49600 99000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 20. WEST WINDS AROUND
5 MPH.
SUNDAY
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. LIGHT WINDS, BECOMING SOUTHEAST
AROUND 5 MPH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. WEST WINDS
AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH.
INZ011-182230-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
503 AM CST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+13) 25
MIN RH % (24HR TREND) 85 (+7) 57
MIN TEMP (24HR TREND) 13 (-18) 21
MAX RH % (24HR TREND) 94 (-5) 76
20FT WIND AM (MPH) S 15-20 W 15-20
20FT WIND PM (MPH) S 15-20 W 15-20 W 15-20 S 1-6
PEAK WIND GUSTS (MPH) 37 36 30 23
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1200 2700
MAX MIXING HGT (FT) 1500 3300
TRANSPORT WND (MPH) W 23 W 33
VENT RATE (MPH-FT) 34500 108900
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 20S. WEST WINDS
AROUND 5 MPH.
SUNDAY
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 19. LIGHT WINDS, BECOMING SOUTHEAST
AROUND 5 MPH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 30S. WEST WINDS
AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHEAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 30S. SOUTHEAST WINDS AROUND 5 MPH.
INZ019-182230-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
603 AM EST THU DEC 18 2025
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER CLOUDY CLOUDY PCLDY PCLDY
PRECIP TYPE SHOWERS SNOW SHOWERS NONE NONE
CHANCE PRECIP (%) 100 40
MAX TEMP (24HR TREND) 52 (+12) 25
MIN RH % (24HR TREND) 85 (+11) 58
MIN TEMP (24HR TREND) 13 (-21) 21
MAX RH % (24HR TREND) 95 (+6) 77
20FT WIND AM (MPH) S 15-20 W 15-20
20FT WIND PM (MPH) SW 15-20 W 15-20 W 15-20 S 10-15
PEAK WIND GUSTS (MPH) 37 35 30 24
PRECIP AMOUNT (IN) 0.50-0.75 0.01-0.05 0.00 0.00
11 AM MIXING HGT (FT) 1300 2400
MAX MIXING HGT (FT) 1600 3000
TRANSPORT WND (MPH) S 34 W 33
VENT RATE (MPH-FT) 56000 99000
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 40S. SOUTHWEST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 20S. WEST
WINDS AROUND 5 MPH.
SUNDAY
SUNNY, COLDER. HIGHS AROUND 30. NORTHWEST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS AROUND 19. LIGHT WINDS, BECOMING SOUTHEAST
AROUND 5 MPH AFTER MIDNIGHT.
MONDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 30S. SOUTHEAST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. NOT AS COLD. LOWS IN THE LOWER
30S. SOUTH WINDS 5 TO 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 40S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 30S. WEST WINDS
AROUND 5 MPH, BECOMING NORTH AFTER MIDNIGHT.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 40S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF RAIN IN THE
EVENING. LOWS IN THE UPPER 30S. SOUTH WINDS AROUND 5 MPH.
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