Illinois City, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Illinois City, IL.

Current Conditions — Illinois City, IL

MUSCATINE (KMUT)

Mostly Cloudy

55.4 F
Humidity:44%
Wind Speed:SW 6.9 mph
Barometer:30.05 in
Dewpoint:33.8 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
May 1 2026, 01:35 PM CDT
Severe Weather Alerts
Severe Weather
 		Daily Weather Forecast
Daily Forecast
 		Observation Alert Monitoring
Observations
 		Storm Report Monitoring
Storm Reports

5-Day Forecast — Illinois City, IL

Friday

High 57 °F
Chance of T-storms
Friday
Night
Low 35 °F
Slight Chance of Rain Showers
Saturday

High 60 °F
Partly Sunny
Saturday
Night
Low 44 °F
Mostly Cloudy
Sunday

High 73 °F
Mostly Cloudy
Sunday
Night
Low 48 °F
Partly Cloudy
Monday

High 78 °F
Isolated T-storm
Monday
Night
Low 48 °F
Chance of Rain
Tuesday

High 62 °F
Chance of Rain Showers

Detailed Forecast — Illinois City, IL

Friday
Chance of Thunderstorms. High near 57°F. Wind 5 to 6 mph, with gusts as high as 9 mph.
Friday Night
Slight Chance of Rain Showers. Low around 35°F. Wind 3 to 6 mph, with gusts as high as 9 mph.
Saturday
Partly Sunny. High near 60°F. Wind 5 to 8 mph, with gusts as high as 13 mph.
Saturday Night
Mostly Cloudy. Low around 44°F. Wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly Cloudy. High near 73°F. Wind 8 to 14 mph, with gusts as high as 24 mph.
Sunday Night
Partly Cloudy. Low around 48°F. Wind around 5 mph, with gusts as high as 8 mph.
Monday
Isolated T-storm. High near 78°F. Wind 10 to 13 mph, with gusts as high as 22 mph.
Monday Night
Chance of Rain. Low around 48°F. Wind around 8 mph, with gusts as high as 15 mph.
Tuesday
Chance of Rain Showers. High near 62°F. Wind 9 to 10 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly Cloudy. Low around 42°F. Wind around 6 mph, with gusts as high as 12 mph.
Wednesday
Slight Chance of Rain Showers. High near 59°F. Wind 8 to 10 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly Cloudy. Low around 41°F. Wind around 6 mph, with gusts as high as 10 mph.
Thursday
Partly Sunny. High near 62°F. Wind 8 to 12 mph, with gusts as high as 20 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • May 1, 2026

Observation History — Illinois City, IL

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:35 PM CDT SW 6.9 10.00 Mostly Cloudy -- 55.4 33.8 44% NA NA 30.05 1017.6
01:15 PM CDT 0.0 10.00 Mostly Clear -- 53.6 32.0 44% NA NA 30.04 1017.3
12:55 PM CDT W 9.2 10.00 Partly Cloudy -- 55.4 33.8 44% NA NA 30.05 1017.6
12:35 PM CDT 9.2 10.00 Mostly Clear -- 51.8 32.0 47% NA NA 30.06 1018.0
12:15 PM CDT NW 5.8 10.00 Mostly Cloudy -- 51.8 30.2 43% NA NA 30.06 1018.0
11:55 AM CDT 5.8 10.00 Mostly Cloudy -- 51.8 30.2 43% NA NA 30.05 1017.6
11:35 AM CDT 0.0 10.00 Mostly Cloudy -- 53.6 30.2 41% NA NA 30.06 1018.0
11:15 AM CDT 3.4 10.00 Cloudy -- 51.8 30.2 43% NA NA 30.06 1018.0
10:55 AM CDT 4.7 10.00 Partly Cloudy -- 51.8 30.2 43% NA NA 30.06 1018.0
10:35 AM CDT 0.0 10.00 Mostly Cloudy -- 51.8 30.2 43% NA NA 30.06 1018.0
10:15 AM CDT 0.0 10.00 Mostly Cloudy -- 50.0 28.4 43% NA NA 30.06 1018.0
09:55 AM CDT 0.0 10.00 Cloudy -- 50.0 30.2 46% NA NA 30.06 1018.0
09:35 AM CDT 3.4 10.00 Cloudy -- 50.0 32.0 50% NA NA 30.06 1018.0
09:15 AM CDT 3.4 10.00 Mostly Cloudy -- 48.2 32.0 53% 47.3 NA 30.06 1018.0
08:55 AM CDT 0.0 10.00 Mostly Cloudy -- 46.4 32.0 57% NA NA 30.06 1018.0
08:35 AM CDT 0.0 10.00 Mostly Cloudy -- 44.6 32.0 61% NA NA 30.06 1018.0
08:15 AM CDT 10.00 Mostly Cloudy -- NULL % NA NA M
07:55 AM CDT 4.7 10.00 Mostly Cloudy -- 42.8 32.0 65% 39.9 NA 30.07 1018.3
07:35 AM CDT 0.0 10.00 Mostly Cloudy -- 42.8 33.8 70% NA NA 30.07 1018.3
07:15 AM CDT 0.0 10.00 Mostly Cloudy -- 41.0 33.8 75% NA NA 30.07 1018.3
06:55 AM CDT 0.0 10.00 Mostly Cloudy -- 39.2 33.8 81% NA NA 30.06 1018.0
06:35 AM CDT 0.0 10.00 Mostly Cloudy -- 37.4 32.0 81% NA NA 30.05 1017.6
06:15 AM CDT 3.4 10.00 Cloudy -- 37.4 30.2 75% 35.1 NA 30.05 1017.6
05:55 AM CDT 0.0 10.00 Cloudy -- 37.4 30.2 75% NA NA 30.05 1017.6

Regional Weather Observation

MUSCATINE (KMUT)

Mostly Cloudy
55.4 F

IOWA CITY (KIOW)

Cloudy
53.6 F

DAVENPORT/QUAD C (KDVN)

Mostly Cloudy
51.8 F

CEDAR RAPIDS (KCID)

Cloudy
53.6 F

WASHINGTON (KAWG)

Cloudy
53.6 F

MOLINE/QUAD CITY (KMLI)

Mostly Cloudy
53.6 F
🔔    Sign-up to receive daily weather forecasts by email or text - subscribe