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

37°F

3°C

Humidity 75%
Wind Speed N 10 mph
Barometer 30.37 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 27 Mar 8:50 am CDT
Extended Forecast for

New Douglas IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 49. Breezy, with a north wind 17 to 20 mph.

    High: 49 °F

    Decreasing
    Clouds and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 28. North wind 6 to 14 mph.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. South wind around 9 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 64. South wind 8 to 14 mph.

    High: 64 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of rain. Partly sunny, with a high near 82. Breezy.

    High: 82 °F

    Slight Chance
    Rain and
    Breezy

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 49. Breezy, with a north wind 17 to 20 mph.
Tonight
Mostly clear, with a low around 28. North wind 6 to 14 mph.
Saturday
Sunny, with a high near 53. Light and variable wind becoming south 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 39. South wind around 9 mph.
Sunday
Partly sunny, with a high near 64. South wind 8 to 14 mph.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 79.
Monday Night
A 20 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 62.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 82. Breezy.
Tuesday Night
A chance of rain, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 50%.
Wednesday
A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 73.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
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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:
7:36 am CDT Mar 27, 2026
Forecast Valid:
9am CDT Mar 27, 2026-6pm CDT Apr 2, 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