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

-8°C

18°F

Humidity 58%
Wind Speed S 9 km/h
Barometer 30.43 in
Dewpoint -15°C (5°F)
Visibility 16 km
Wind Chill-12°C (10°F)
Last update 20 Jan 6:45 am CST
Extended Forecast for

New Douglas IL

  • Today

    Today: Mostly sunny, with a high near 0. South wind 8 to 13 km/h increasing to 18 to 23 km/h in the afternoon.

    High: 0 °C

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around -3. South wind 18 to 24 km/h, with gusts as high as 40 km/h.

    Low: -3 °C

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 6. West wind 13 to 23 km/h, with gusts as high as 35 km/h.

    High: 6 °C

    Gradual
    Clearing

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around -6. Southwest wind 8 to 14 km/h becoming northwest after midnight.

    Low: -6 °C

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 2. Northwest wind 8 to 11 km/h.

    High: 2 °C

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -13.

    Low: -13 °C

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near -10.

    High: -10 °C

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around -17.

    Low: -17 °C

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy and cold, with a high near -11.

    High: -11 °C

    Chance Snow

Detailed Forecast

Today
Mostly sunny, with a high near 0. South wind 8 to 13 km/h increasing to 18 to 23 km/h in the afternoon.
Tonight
Increasing clouds, with a low around -3. South wind 18 to 24 km/h, with gusts as high as 40 km/h.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 6. West wind 13 to 23 km/h, with gusts as high as 35 km/h.
Wednesday Night
Partly cloudy, with a low around -6. Southwest wind 8 to 14 km/h becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 2. Northwest wind 8 to 11 km/h.
Thursday Night
Mostly cloudy, with a low around -13.
Friday
Mostly cloudy and cold, with a high near -10.
Friday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around -17.
Saturday
A 40 percent chance of snow. Mostly cloudy and cold, with a high near -11.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around -15.
Sunday
Mostly sunny, with a high near -6.
Sunday Night
Mostly clear, with a low around -15.
Monday
Sunny, with a high near -4.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
New Douglas IL
 38.98°N 89.67°W (Elev. 620 m)
Last Update:
4:36 am CST Jan 20, 2026
Forecast Valid:
7am CST Jan 20, 2026-6pm CST Jan 26, 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