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.

Mostly Cloudy

70°F

21°C

Humidity 70%
Wind Speed SW 10 mph
Barometer 29.97 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Apr 12:35 am CDT
Extended Forecast for

New Douglas IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 63. Southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Low: 63 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 83. South wind 10 to 18 mph. Chance of precipitation is 20%.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 5am. Partly cloudy, with a low around 66. South wind 13 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Breezy, with a southwest wind 11 to 20 mph. Chance of precipitation is 30%.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms and
    Breezy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind 11 to 16 mph.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 81.

    High: 81 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 63. Southwest wind 11 to 14 mph, with gusts as high as 21 mph.
Monday
A slight chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly sunny, with a high near 83. South wind 10 to 18 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 5am. Partly cloudy, with a low around 66. South wind 13 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tuesday
A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Breezy, with a southwest wind 11 to 20 mph. Chance of precipitation is 30%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind 11 to 16 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Thursday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 60.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76. Chance of precipitation is 60%.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 61.
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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:
11:11 pm CDT Apr 12, 2026
Forecast Valid:
1am CDT Apr 13, 2026-6pm CDT Apr 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