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

73°F

23°C

Humidity 69%
Wind Speed SW 12 mph
Barometer 29.91 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 14 Apr 1:35 am CDT
Extended Forecast for

New Douglas IL

  • Overnight

    Overnight: Partly cloudy, with a low around 66. South wind around 14 mph, with gusts as high as 23 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 87. South wind 10 to 18 mph, with gusts as high as 25 mph.

    High: 87 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 67. Southwest wind 10 to 16 mph, with gusts as high as 23 mph.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 80. South wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 61. Southwest wind around 10 mph. Chance of precipitation is 80%.

    Low: 61 °F

    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 70%.

    High: 77 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.

    Low: 57 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 66. South wind around 14 mph, with gusts as high as 23 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 8am. Mostly sunny, with a high near 87. South wind 10 to 18 mph, with gusts as high as 25 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 5am. Increasing clouds, with a low around 67. Southwest wind 10 to 16 mph, with gusts as high as 23 mph.
Wednesday
Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 80. South wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 61. Southwest wind around 10 mph. Chance of precipitation is 80%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 70%.
Thursday Night
Mostly clear, with a low around 56.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 69.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 39.
Sunday
Sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 66.
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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 ft)
Last Update:
1:26 am CDT Apr 14, 2026
Forecast Valid:
2am CDT Apr 14, 2026-6pm CDT Apr 20, 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