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.

Overcast

42°F

6°C

Humidity 50%
Wind Speed NE 7 mph
Barometer 29.82 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 26 Feb 1:35 am CST
Extended Forecast for

New Douglas IL

  • Overnight

    Overnight: A 40 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 31. Northeast wind 6 to 9 mph.

    Low: 31 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 53. East wind 5 to 7 mph becoming calm in the afternoon.

    High: 53 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 34. South wind 3 to 6 mph.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 67. Southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon.

    High: 67 °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: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Sunday

    Sunday: A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.

    High: 38 °F

    Slight Chance
    Rain/Snow
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow likely, mainly before midnight. Cloudy, with a low around 25. Chance of precipitation is 70%.

    Low: 25 °F

    Rain/Snow
    Likely

Detailed Forecast

Overnight
A 40 percent chance of rain, mainly before 3am. Mostly cloudy, with a low around 31. Northeast wind 6 to 9 mph.
Thursday
Partly sunny, with a high near 53. East wind 5 to 7 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 34. South wind 3 to 6 mph.
Friday
Sunny, with a high near 67. Southwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon.
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
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 28.
Sunday
A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 38. Chance of precipitation is 50%.
Sunday Night
Rain and snow likely, mainly before midnight. Cloudy, with a low around 25. 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 38. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 25.
Tuesday
A 40 percent chance of rain. Cloudy, with a high near 41.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 29.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 49.
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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:
12:26 am CST Feb 26, 2026
Forecast Valid:
1am CST Feb 26, 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