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

36°F

2°C

Humidity 52%
Wind Speed NW 8 mph
Barometer 30.27 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 21 Feb 6:50 pm CST
Extended Forecast for

New Douglas IL

  • Tonight

    Tonight: Increasing clouds, with a low around 20. Northwest wind 9 to 16 mph, with gusts as high as 26 mph.

    Low: 20 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 29. Blustery, with a northwest wind 17 to 23 mph, with gusts as high as 32 mph.

    High: 29 °F

    Partly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 15. Northwest wind 15 to 18 mph, with gusts as high as 26 mph.

    Low: 15 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 32. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.

    High: 32 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18. Calm wind becoming south around 6 mph after midnight.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Chance Rain

Detailed Forecast

Tonight
Increasing clouds, with a low around 20. Northwest wind 9 to 16 mph, with gusts as high as 26 mph.
Sunday
Partly sunny, with a high near 29. Blustery, with a northwest wind 17 to 23 mph, with gusts as high as 32 mph.
Sunday Night
Partly cloudy, with a low around 15. Northwest wind 15 to 18 mph, with gusts as high as 26 mph.
Monday
Sunny, with a high near 32. Northwest wind 7 to 16 mph, with gusts as high as 24 mph.
Monday Night
Partly cloudy, with a low around 18. Calm wind becoming south around 6 mph after midnight.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 38.
Wednesday
Partly sunny, with a high near 55.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 33.
Thursday
A 40 percent chance of rain. Mostly sunny, with a high near 48.
Thursday Night
Mostly clear, with a low around 27.
Friday
Sunny, with a high near 57.
Friday Night
Mostly clear, with a low around 36.
Saturday
Mostly sunny, with a high near 59.
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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:
4:46 pm CST Feb 21, 2026
Forecast Valid:
7pm CST Feb 21, 2026-6pm CST Feb 28, 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