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Hazardous Weather Conditions

Winter Weather Advisory issued March 1 at 1:34AM CST until March 2 at 6:00AM CST

Current Conditions: SAINT JACOB, ILLINOIS

Clear


30.2 F
Last Updated on Mar 1 2026, 12:55 AM CST
Humidity: %
Wind Speed: 6.9 mph
Barometer: in
Dewpoint: F
Visibility: 10.00 mi
Precip: --
Heat Index: NA
Wind Chill: 23.4 F
Current conditions at:

ALTON/ST LOUIS R (KALN)

Lat: 38.89 Lon: -90.03

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5 Day Forecast for SAINT JACOB, ILLINOIS (62281)

Sunday
Slight Chance of Rain
High 46 °F
Sunday
Night
Snow Likely
Low 33 °F
Monday
Chance of Rain
High 44 °F
Monday
Night
T-storms
Low 41 °F
Tuesday
T-storms
High 64 °F
Tuesday
Night
T-storms
Low 53 °F
Wednesday
T-storms
High 68 °F
Wednesday
Night
Rain Likely
Low 53 °F
Thursday
Scattered T-storms Likely
High 69 °F



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Observation History for SAINT JACOB, 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)
12:55 AM CST 6.9 10.00 Clear -- 30.2 % 23.4 NA M
12:35 AM CST 5.8 10.00 Clear -- 30.6 % 24.6 NA M
12:15 AM CST 8.1 G 17.2 10.00 Clear -- 30.9 % 23.5 NA M
11:55 PM CST 9.2 G 16.1 10.00 Clear -- 31.1 % 23.0 NA M
11:35 PM CST 12.8 G 20.8 10.00 Clear -- 31.8 % 22.3 NA M
11:15 PM CST 12.7 G 23.0 10.00 Clear -- 32.0 % 22.5 NA M
10:55 PM CST 13.9 G 20.8 10.00 Clear -- 33.1 % 23.4 NA M
10:35 PM CST 9.2 G 19.7 10.00 Partly Cloudy -- 35.2 % 28.2 NA M
10:15 PM CST 10.3 G 17.2 10.00 Mostly Cloudy -- 37.0 % 29.8 NA M
09:50 PM CST 19.7 G 30.0 10.00 Partly Cloudy and Windy -- 39.2 % 29.5 NA M
08:50 PM CST 17.2 10.00 Cloudy -- 46.4 % 39.6 NA M
07:50 PM CST 16.1 G 21.9 10.00 Mostly Cloudy -- 53.6 % NA NA M
06:50 PM CST 9.2 10.00 Cloudy -- 55.4 % NA NA M
05:50 PM CST 3.4 10.00 Mostly Cloudy -- 59.0 % NA NA M
04:50 PM CST 4.7 10.00 Mostly Cloudy -- 60.8 % NA NA M
03:50 PM CST 6.9 10.00 Clear -- 62.6 % NA NA M
02:50 PM CST 9.2 10.00 Clear -- 62.6 % NA NA M
11:45 AM CST 6.9 10.00 Clear -- 59.0 % NA NA M
10:45 AM CST 5.8 10.00 Clear -- 55.4 % NA NA M
09:45 AM CST E 10.4 10.00 Clear -- 51.8 % NA NA M
08:45 AM CST NE 6.9 10.00 Clear -- 48.2 % 45.1 NA M
07:45 AM CST 5.8 10.00 Partly Cloudy -- 39.2 % 34.9 NA M
06:50 AM CST 4.7 10.00 Partly Cloudy -- 37.4 % 33.6 NA M
06:35 AM CST 0.0 10.00 Mostly Cloudy -- 38.1 % NA NA M

Regional Weather Observation

ALTON/ST LOUIS R (KALN)

Clear
30.2 F

SCOTT AFB/BELLEV (KBLV)

Clear
33.6 F

LITCHFIELD MUNI (K3LF)

Clear
26.4 F

ST CHARLES (KSET)

Clear
28.4 F

ST LOUIS (KSTL)

Clear
30.2 F

CAHOKIA/ST LOUIS (KCPS)

Clear
41.0 F

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