Ellis Grove, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Ellis Grove, IL.

Current Conditions — Ellis Grove, IL

CAHOKIA/ST LOUIS (KCPS)

Clear

44.6 F
Humidity:70%
Wind Speed:NW 8.1 mph
Barometer:30.05 in
Dewpoint:35.6 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:40.1 F
May 1 2026, 06:20 AM CDT
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5-Day Forecast — Ellis Grove, IL

Friday

High 62 °F
Partly Sunny
Friday
Night
Low 42 °F
Slight Chance of Rain
Saturday

High 60 °F
Partly Sunny
Saturday
Night
Low 39 °F
Mostly Clear
Sunday

High 73 °F
Forecast Missing
Sunday
Night
Low 55 °F
Slight Chance of Showers
Monday

High 80 °F
Isolated T-storm
Monday
Night
Low 59 °F
Chance of Showers
Tuesday

High 73 °F
Chance of T-storms

Detailed Forecast — Ellis Grove, IL

Friday
Partly Sunny. High near 62°F. Wind 5 to 9 mph, with gusts as high as 15 mph.
Friday Night
Slight Chance of Rain. Low around 42°F. Wind 2 to 3 mph, with gusts as high as 7 mph.
Saturday
Partly Sunny. High near 60°F. Wind 5 to 8 mph, with gusts as high as 15 mph.
Saturday Night
Mostly Clear. Low around 39°F. Wind 2 to 3 mph, with gusts as high as 7 mph.
Sunday
Sunny. High near 73°F. Wind 8 to 12 mph, with gusts as high as 18 mph.
Sunday Night
Slight Chance of Showers. Low around 55°F. Wind around 12 mph, with gusts as high as 18 mph.
Monday
Isolated T-storm. High near 80°F. Wind 13 to 15 mph, with gusts as high as 24 mph.
Monday Night
Chance of Showers. Low around 59°F. Wind around 13 mph, with gusts as high as 20 mph.
Tuesday
Chance of Thunderstorms. High near 73°F. Wind 15 to 20 mph, with gusts as high as 24 mph.
Tuesday Night
Thunderstorms Likely. Low around 51°F. Wind around 13 mph, with gusts as high as 16 mph.
Wednesday
Chance of Thunderstorms. High near 66°F. Wind 10 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Partly Cloudy. Low around 46°F. Wind around 8 mph, with gusts as high as 14 mph.
Thursday
Partly Sunny. High near 66°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 — Ellis Grove, 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)
06:20 AM CDT NW 8.1 10.00 Clear -- 44.6 35.6 70% 40.1 NA 30.05 1017.6
06:15 AM CDT NW 8.1 10.00 Clear -- 44.6 35.6 70% 40.1 NA 30.05 1017.6
06:10 AM CDT NW 6.9 10.00 Clear -- 44.6 33.8 66% 40.6 NA 30.05 1017.6
06:05 AM CDT NW 6.9 10.00 Clear -- 44.6 35.6 70% 40.6 NA 30.05 1017.6
06:00 AM CDT NW 6.9 10.00 Clear -- 46.4 35.6 66% 43.0 NA 30.05 1017.6
05:40 AM CDT 6.9 10.00 Clear -- 46.4 35.6 66% 43.0 NA 30.04 1017.3
05:35 AM CDT NW 8.1 10.00 Clear -- 46.4 35.6 66% 42.4 NA 30.04 1017.3
05:15 AM CDT NW 8.1 10.00 Clear -- 46.4 35.6 66% 42.4 NA 30.04 1017.3
05:05 AM CDT NW 9.2 10.00 Clear -- 48.2 37.4 66% 44.1 NA 30.03 1016.9
05:00 AM CDT 11.5 10.00 Clear -- 48.2 35.6 62% 43.3 NA 30.03 1016.9
04:45 AM CDT 12.7 10.00 Clear -- 48.2 37.4 66% 43.0 NA 30.03 1016.9
04:40 AM CDT 10.4 10.00 Clear -- 48.2 39.2 71% 43.7 NA 30.03 1016.9
04:35 AM CDT 9.2 10.00 Clear -- 48.2 39.2 71% 44.1 NA 30.03 1016.9
04:10 AM CDT 10.00 Clear -- 50.0 39.2 66% NA NA 30.03 1016.9
04:05 AM CDT NW 13.8 10.00 Clear -- 50.0 39.2 66% NA NA 30.03 1016.9
04:00 AM CDT NW 12.7 10.00 Clear -- 50.0 39.2 66% NA NA 30.03 1016.9
03:50 AM CDT NW 9.2 10.00 Clear -- 50.0 39.2 66% NA NA 30.03 1016.9
03:30 AM CDT NW 10.4 10.00 Clear -- 51.8 41.0 67% NA NA 30.02 1016.6
03:25 AM CDT NW 10.4 10.00 Mostly Clear -- 51.8 42.8 71% NA NA 30.02 1016.6
03:20 AM CDT 8.1 10.00 Mostly Clear -- 51.8 42.8 71% NA NA 30.02 1016.6
03:05 AM CDT NW 9.2 10.00 Mostly Cloudy -- 51.8 41.0 67% NA NA 30.02 1016.6
02:50 AM CDT 12.7 10.00 Cloudy -- 53.6 41.0 62% NA NA 30.02 1016.6
02:45 AM CDT NW 12.7 10.00 Cloudy -- 53.6 41.0 62% NA NA 30.02 1016.6
02:40 AM CDT 11.5 10.00 Cloudy -- 53.6 41.0 62% NA NA 30.02 1016.6

Regional Weather Observation

CAHOKIA/ST LOUIS (KCPS)

Clear
44.6 F

SPARTA (KSAR)

Clear
65.1 F

SCOTT AFB/BELLEV (KBLV)

Clear
44.4 F

ST LOUIS (KSTL)

Clear
44.6 F

ALTON/ST LOUIS R (KALN)

NULL
44.2 F

ST LOUIS/SPIRIT (KSUS)

Clear
42.8 F
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