National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

52°F

11°C

Humidity 41%
Wind Speed NE 9 mph
Barometer 29.74 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 25 Feb 3:45 pm CST
Extended Forecast for

New Douglas IL

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 31. Calm wind becoming northeast around 6 mph in the evening.

    Low: 31 °F

    Chance Rain

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 52. East wind around 6 mph becoming calm in the afternoon.

    High: 52 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. Calm wind becoming south around 5 mph after midnight.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66. Southwest wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. South wind 6 to 8 mph becoming north after midnight.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of snow and sleet before noon, then a chance of rain and snow. Cloudy, with a high near 41. Chance of precipitation is 40%.

    High: 41 °F

    Chance Wintry
    Mix

  • Sunday Night

    Sunday Night: Rain, snow, and freezing rain likely before midnight, then a chance of snow and freezing rain. Cloudy, with a low around 26. Chance of precipitation is 70%.

    Low: 26 °F

    Wintry Mix
    Likely

Detailed Forecast

Tonight
A 50 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 31. Calm wind becoming northeast around 6 mph in the evening.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 52. East wind around 6 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 32. Calm wind becoming south around 5 mph after midnight.
Friday
Sunny, with a high near 66. Southwest wind 5 to 13 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 38. South wind 6 to 8 mph becoming north after midnight.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
A slight chance of snow and sleet before noon, then a chance of rain and snow. Cloudy, with a high near 41. Chance of precipitation is 40%.
Sunday Night
Rain, snow, and freezing rain likely before midnight, then a chance of snow and freezing rain. Cloudy, with a low around 26. Chance of precipitation is 70%.
Monday
A chance of rain and snow before noon, then a slight chance of rain. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Monday Night
A chance of rain or freezing rain. Cloudy, with a low around 25. Chance of precipitation is 40%.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 42.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 30.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Douglas IL
 38.98°N 89.67°W (Elev. 620 ft)
Last Update:
2:31 pm CST Feb 25, 2026
Forecast Valid:
4pm CST Feb 25, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation