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

88°F

31°C

Humidity 38%
Wind Speed SW 8 mph
Barometer 29.85 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 12 Oct 5:50 pm CDT
Extended Forecast for

New Douglas IL

  • Tonight

    Tonight: Mostly clear, with a low around 67. Southwest wind 6 to 10 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Southwest wind 6 to 10 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 70. South wind 3 to 7 mph.

    Low: 70 °F

    Mostly Clear
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 80. Light and variable wind. Chance of precipitation is 100%.

    High: 80 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Light east wind. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 90%.

    High: 81 °F

    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 63. Breezy.

    High: 63 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 67. Southwest wind 6 to 10 mph.
Tuesday
Sunny, with a high near 93. Southwest wind 6 to 10 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 70. South wind 3 to 7 mph.
Wednesday
Showers and possibly a thunderstorm. High near 80. Light and variable wind. Chance of precipitation is 100%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Light east wind. Chance of precipitation is 60%.
Thursday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 90%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 50.
Friday
Partly sunny, with a high near 63. Breezy.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 62.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Douglas IL
 38.96°N 89.68°W (Elev. 614 ft)
Last Update:
5:31 pm CDT Oct 12, 2026
Forecast Valid:
6pm CDT Oct 12, 2026-6pm CDT Oct 19, 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