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Douglas, Illinois Weather Forecast
Douglas, Illinois Weather
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Weather Forecast for Douglas, Illinois : St. Clair County
Issued: 2:41 pm CST Dec 11, 2025 Latitude: 38.4244948 Longitude: -89.9826053 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
30% chance of snow on This Afternoon Mostly Cloudy on Tonight Mostly Cloudy on Friday 30% chance of snow on Saturday Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday Partly Sunny on Wednesday 20% chance of rain on Thursday
High: 37°F Low: 31°F High: 39°F High: 27°F High: 15°F High: 37°F High: 49°F High: 55°F High: 54°F
Low: 22°F Low: 5°F Low: 8°F Low: 25°F Low: 36°F Low: 43°F  
Snow Mostly Cloudy Mostly Cloudy Snow Sunny Sunny Mostly Sunny Partly Sunny Rain
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Current Conditions at
SPARTA - (KSAR)
36°
Cloudy
as of 2:35 PM CST
Rel. Humidity: 64%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.97 in.
Flight Rule: VFR
Wind Data
6 MPH
140° Southeast
Cloud Level(s): Scattered at 7000ft, Solid Overcast at 8000ft
30% chance of snow This Afternoon This Afternoon... A 30 percent chance of snow, mainly between 4pm and 5pm. Cloudy, with a high near 37. Southeast wind 3 to 7 mph.

Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 31. Southeast wind 5 to 9 mph becoming northwest after midnight.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 39. Northwest wind 8 to 10 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 22. Northwest wind around 6 mph.

30% chance of snow Saturday Saturday... A 30 percent chance of snow after noon. Mostly cloudy, with a high near 27. North wind 6 to 10 mph.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 5.

Sunny on Sunday Sunday... Sunny and cold, with a high near 15.

Clear on Sunday Night Sunday Night... Clear, with a low around 8.

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

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 25.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 49.

Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 36.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 55.

30% chance of rain Wednesday Night Wednesday Night... A 30 percent chance of rain. Mostly cloudy, with a low around 43.

20% chance of rain Thursday Thursday... A 20 percent chance of rain. Partly sunny, with a high near 54.

Sun Almanac for Douglas, Illinois
Sunrise: 07:07 AM
Sunset: 4:39 PM
Civil Sunrise:06:38 AM
Civil Sunset: 5:09 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 5:42 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:14 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.