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Day 1 Outlook • April 17, 2026
Day 2 Outlook • April 18, 2026
Day 3 Outlook • April 19, 2026
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dBZ 5
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Hazardous Weather Conditions

  • No active alerts for BELLEVILLE, ILLINOIS

Current Conditions: BELLEVILLE, ILLINOIS

ALTON/ST LOUIS R (KALN)

Clear

71.6 F
Humidity:%
Wind Speed:S 12.8 mph
Barometer: in
Dewpoint: F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 17 2026, 09:50 AM CDT
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5 Day Forecast for BELLEVILLE, ILLINOIS (62223)

Friday

High 86 °F
Chance of T-storms
Friday
Night
Low 50 °F
T-storms
Saturday

High 59 °F
Chance of Rain Showers
Saturday
Night
Low 41 °F
Mostly Clear
Sunday

High 66 °F
Mostly Sunny
Sunday
Night
Low 42 °F
Mostly Clear
Monday

High 73 °F
Sunny
Monday
Night
Low 53 °F
Mostly Clear
Tuesday

High 78 °F
Partly Sunny

Detailed Forecast for BELLEVILLE, ILLINOIS (62223)

Friday
Chance of Thunderstorms. High near 86°F. Wind 7 to 16 mph, with gusts as high as 26 mph.
Friday Night
Thunderstorms. Low around 50°F. Wind 10 to 14 mph, with gusts as high as 24 mph.
Saturday
Chance of Rain Showers. High near 59°F. Wind 12 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly Clear. Low around 41°F. Wind 5 to 8 mph, with gusts as high as 15 mph.
Sunday
Mostly Sunny. High near 66°F. Wind 6 to 12 mph, with gusts as high as 20 mph.
Sunday Night
Mostly Clear. Low around 42°F. Wind around 3 mph, with gusts as high as 8 mph.
Monday
Sunny. High near 73°F. Wind around 8 mph, with gusts as high as 14 mph.
Monday Night
Mostly Clear. Low around 53°F. Wind around 8 mph, with gusts as high as 16 mph.
Tuesday
Partly Sunny. High near 78°F. Wind 9 to 13 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly Clear. Low around 57°F. Wind around 7 mph, with gusts as high as 14 mph.
Wednesday
Partly Sunny. High near 80°F. Wind 7 to 9 mph, with gusts as high as 15 mph.
Wednesday Night
Partly Cloudy. Low around 59°F. Wind around 6 mph, with gusts as high as 12 mph.
Thursday
Chance of Scattered Thunderstorms. High near 80°F. Wind around 10 mph, with gusts as high as 18 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 17, 2026

Observation History for BELLEVILLE, ILLINOIS

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)
09:50 AM CDT S 12.8 10.00 Clear -- 71.6 % NA NA M
08:50 AM CDT S 15.0 10.00 Clear -- 68.0 % NA NA M
07:50 AM CDT S 10.4 10.00 Partly Cloudy -- 64.4 % NA NA M
06:50 AM CDT S 12.8 10.00 Partly Cloudy -- 62.6 % NA NA M
06:15 AM CDT S 8.1 10.00 Mostly Cloudy -- 63.1 % NA NA M
05:55 AM CDT 6.9 10.00 Mostly Cloudy -- 62.6 % NA NA M
05:35 AM CDT S 6.9 10.00 Partly Cloudy -- 62.6 % NA NA M
05:15 AM CDT S 6.9 10.00 Partly Cloudy -- 62.6 % NA NA M
04:55 AM CDT 4.7 10.00 Mostly Cloudy -- 62.8 % NA NA M
04:35 AM CDT S 6.9 10.00 Clear -- 62.6 % NA NA M
04:15 AM CDT 5.8 10.00 Clear -- 61.3 % NA NA M
03:55 AM CDT SE 4.7 7.00 Partly Cloudy -- 61.5 % NA NA M
03:35 AM CDT 5.8 10.00 Partly Cloudy -- 63.5 % NA NA M
03:15 AM CDT 4.6 10.00 Partly Cloudy -- 63.0 % NA NA M
02:55 AM CDT 5.8 10.00 Clear -- 63.7 % NA NA M
02:35 AM CDT 4.7 10.00 Clear -- 63.1 % NA NA M
02:15 AM CDT 5.7 10.00 Clear -- 63.7 % NA NA M
01:55 AM CDT S 5.8 10.00 Clear -- 63.5 % NA NA M
01:35 AM CDT 4.7 10.00 Clear -- 62.6 % NA NA M
01:20 AM CDT S 4.7 10.00 Clear -- 61.7 % NA NA M
12:55 AM CDT 3.4 10.00 Clear -- 63.0 % NA NA M
11:55 PM CDT S 6.9 10.00 Clear -- 64.9 % NA NA M
11:35 PM CDT S 6.9 10.00 Clear -- 65.7 % NA NA M
11:15 PM CDT S 6.9 10.00 Clear -- 66.4 % NA NA M

Regional Weather Observation

ALTON/ST LOUIS R (KALN)

Clear
71.6 F

ST LOUIS (KSTL)

Mostly Clear
75.2 F

ST CHARLES (KSET)

Mostly Clear
75.2 F

CAHOKIA/ST LOUIS (KCPS)

Mostly Clear
75.2 F

ST LOUIS/SPIRIT (KSUS)

Clear
77.0 F

SCOTT AFB/BELLEV (KBLV)

Partly Cloudy
NULL F
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