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

60°F

16°C

Humidity 51%
Wind Speed S 7 mph
Barometer 30.06 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 30 Mar 12:15 am CDT
Extended Forecast for

New Douglas IL

  • Overnight

    Overnight: Partly cloudy, with a low around 54. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Breezy, with a southwest wind 13 to 20 mph.

    High: 80 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62. South wind around 16 mph, with gusts as high as 25 mph.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of rain, then a chance of rain and thunderstorms after 10am. Mostly sunny, with a high near 82. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 53. Southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.

    Low: 53 °F

    Chance
    T-storms then
    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.

    High: 64 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.

    Low: 50 °F

    Rain

  • Thursday

    Thursday: Rain. High near 65. Chance of precipitation is 80%.

    High: 65 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.

    Low: 47 °F

    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 54. South wind around 11 mph, with gusts as high as 21 mph.
Monday
Mostly sunny, with a high near 80. Breezy, with a southwest wind 13 to 20 mph.
Monday Night
Partly cloudy, with a low around 62. South wind around 16 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of rain, then a chance of rain and thunderstorms after 10am. Mostly sunny, with a high near 82. Breezy, with a southwest wind 15 to 23 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and thunderstorms, then rain and possibly a thunderstorm after 1am. Low around 53. Southwest wind 10 to 14 mph becoming north after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%.
Wednesday
Rain and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.
Wednesday Night
Rain and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.
Thursday
Rain. High near 65. Chance of precipitation is 80%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 72.
Friday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 55.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Saturday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 59.
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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:
10:41 pm CDT Mar 29, 2026
Forecast Valid:
12am CDT Mar 30, 2026-6pm CDT Apr 5, 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