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Douglas, Illinois Weather Forecast
Douglas, Illinois Weather
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Weather Forecast for Douglas, Illinois : St. Clair County
Issued: 11:12 am CST Jan 18, 2026 Latitude: 38.4244948 Longitude: -89.9826053 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight M.L.King Day Tuesday Wednesday Thursday Friday Saturday
Mostly Cloudy on This Afternoon Clearing on Tonight Sunny on M.L.King Day Sunny on Tuesday Mostly Sunny on Wednesday Sunny on Thursday 20% chance of rain on Friday 30% chance of snow on Saturday
High: 31°F Low: 11°F High: 22°F High: 38°F High: 45°F High: 37°F High: 45°F High: 31°F
Low: 11°F Low: 28°F Low: 22°F Low: 26°F Low: 24°F  
Mostly Cloudy Clearing Sunny Sunny Mostly Sunny Sunny Rain Snow
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Current Conditions at
SCOTT AFB - (KBLV)
25°
Feels like 12°F
Cloudy
as of 12:55 PM CST
Rel. Humidity: 41%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
14 MPH
210° Southwest
Cloud Level(s): Solid Overcast at 10000ft
Current Conditions at
EAST ST LOUIS - (KCPS)
23°
Feels like 13°F
Cloudy
as of 12:53 PM CST
Rel. Humidity: 45%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
9 MPH
200° South
Cloud Level(s): Solid Overcast at 10000ft
Current Conditions at
SPARTA - (KSAR)
25°
Feels like 13°F
Cloudy
as of 1:15 PM CST
Rel. Humidity: 45%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.06 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 17 MPH
170° South
Cloud Level(s): Solid Overcast at 10000ft
Current Conditions at
ST LOUIS - (KSTL)
21°
Feels like 10°F
Cloudy
as of 12:51 PM CST
Rel. Humidity: 44%
Dew Point: 3°F
Visibility: 10 Miles
Pressure: 30.03 in.
Flight Rule: VFR
Wind Data
9 MPH
180° South
Cloud Level(s): Solid Overcast at 10000ft
Mostly Cloudy on This Afternoon This Afternoon... Mostly cloudy, with a high near 31. Southwest wind around 11 mph, with gusts as high as 21 mph.

Clearing on Tonight Tonight... Cloudy during the early evening, then gradual clearing, with a low around 11. Southwest wind 10 to 18 mph becoming northwest after midnight. Winds could gust as high as 32 mph.

Sunny on M.L.King Day M.L.King Day... Sunny, with a high near 22. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 29 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 11. West wind around 5 mph becoming calm.

Sunny on Tuesday Tuesday... Sunny, with a high near 38. South wind 5 to 10 mph.

Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 28.

Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 45.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 22.

Sunny on Thursday Thursday... Sunny, with a high near 37.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 26.

20% chance of rain Friday Friday... A 20 percent chance of rain. Mostly cloudy, with a high near 45.

40% chance of rain & snow Friday Night Friday Night... A chance of rain and snow. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

30% chance of snow Saturday Saturday... A 30 percent chance of snow. Partly sunny, with a high near 31.

Current Radar Image


Sun Almanac for Douglas, Illinois
Sunrise: 07:14 AM
Sunset: 5:06 PM
Civil Sunrise:06:46 AM
Civil Sunset: 5:35 PM
Nautical Sunrise: 06:13 AM
Nautical Sunset: 6:08 PM
Astro Sunrise: 05:42 AM
Astro Sunset: 6:39 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.