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Hazardous Weather Conditions

No active alerts for SWANWICK, ILLINOIS

Current Conditions: SWANWICK, ILLINOIS

Cloudy


45.7 F
Last Updated on Feb 28 2026, 10:55 PM CST
Humidity: 59%
Wind Speed: 10.3 G 18.3 mph
Barometer: 30.12 in
Dewpoint: 32.2 F
Visibility: 10.00 mi
Precip: --
Heat Index: NA
Wind Chill: 40.6 F
Current conditions at:

SPARTA (KSAR)

Lat: 38.15 Lon: -89.7

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5 Day Forecast for SWANWICK, ILLINOIS (62237)

Saturday
Forecast Missing
High 66 °F
Saturday
Night
Partly Cloudy
Low 32 °F
Sunday
Slight Chance of Rain
High 48 °F
Sunday
Night
Rain/Snow Mix Likely
Low 35 °F
Monday
Rain Likely
High 46 °F
Monday
Night
Rain Likely
Low 41 °F
Tuesday
Rain Likely
High 66 °F
Tuesday
Night
T-storms Likely
Low 57 °F
Wednesday
T-storms Likely
High 68 °F



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Observation History for SWANWICK, 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)
10:55 PM CST 10.3 G 18.3 10.00 Cloudy -- 45.7 32.2 59% 40.6 NA 30.12 1020.0
10:35 PM CST 12.8 G 17.2 10.00 Cloudy -- 47.7 34.2 59% 42.3 NA 30.12 1019.7
10:15 PM CST 9.2 G 17.2 10.00 Mostly Cloudy -- 50.5 35.6 56% NA NA 30.10 1019.3
09:55 PM CST 12.8 G 16.1 10.00 Mostly Cloudy -- 53.6 37.4 54% NA NA 30.08 1018.6
09:35 PM CST G 16.1 10.00 Cloudy -- 55.4 38.8 54% NA NA 30.07 1018.3
09:15 PM CST 8.1 10.00 Cloudy -- 56.3 39.9 54% NA NA 30.06 1018.0
08:55 PM CST 5.8 10.00 Cloudy -- 56.1 40.8 56% NA NA 30.06 1018.0
08:35 PM CST G 18.3 10.00 Cloudy -- 61.0 38.3 43% NA NA 30.04 1017.3
08:15 PM CST 3.4 10.00 Cloudy -- 61.3 37.6 41% NA NA 30.03 1016.9
07:55 PM CST 0.0 10.00 Light Rain -- 61.3 38.3 42% NA NA 30.02 1016.6
07:35 PM CST SW 3.4 10.00 Cloudy -- 62.6 37.4 39% NA NA 30.02 1016.6
07:15 PM CST S 3.4 10.00 Cloudy -- 62.2 39.2 43% NA NA 30.01 1016.3
06:55 PM CST 0.0 10.00 Cloudy -- 61.9 37.2 40% NA NA 29.99 1015.6
06:35 PM CST 3.4 10.00 Cloudy -- 63.5 36.1 36% NA NA 30.00 1015.9
06:15 PM CST 6.9 10.00 Mostly Cloudy -- 62.8 37.0 38% NA NA 30.01 1016.3
05:55 PM CST S 5.8 10.00 Partly Cloudy -- 62.8 36.7 38% NA NA 29.99 1015.6
05:35 PM CST S 4.7 10.00 Mostly Cloudy -- 62.8 37.0 38% NA NA 30.00 1015.9
05:15 PM CST S 4.7 10.00 Cloudy -- 62.6 36.7 38% NA NA 30.00 1015.9
04:55 PM CST 0.0 10.00 Cloudy -- 63.7 35.8 35% NA NA 30.00 1015.9
04:35 PM CST 4.7 10.00 Mostly Cloudy -- 62.8 37.8 39% NA NA 29.99 1015.6
04:15 PM CST E 3.4 10.00 Cloudy -- 63.0 38.5 40% NA NA 29.98 1015.2
03:55 PM CST 3.4 10.00 Cloudy -- 63.5 34.9 34% NA NA 29.99 1015.6
03:35 PM CST S 3.4 10.00 Mostly Cloudy -- 63.9 34.9 34% NA NA 30.00 1015.9
11:55 AM CST 0.0 10.00 Clear -- 61.3 30.7 31% NA NA 30.07 1018.3

Regional Weather Observation

SPARTA (KSAR)

Cloudy
45.7 F

SCOTT AFB/BELLEV (KBLV)

Clear
39.0 F

CAHOKIA/ST LOUIS (KCPS)

Clear
41.0 F

CENTRALIA (KENL)

Mostly Cloudy
38.7 F

ALTON/ST LOUIS R (KALN)

Clear
33.1 F

ST LOUIS (KSTL)

Clear
39.2 F

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