National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

71°F

22°C

Humidity 98%
Wind Speed Calm
Barometer 29.82 in
Dewpoint 70°F (21°C)
Visibility 5.00 mi
Last update 18 Jun 1:55 am CDT
Extended Forecast for

3 Miles NNW Donnellson IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 71. South wind around 7 mph.

    Low: 71 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 84. South wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 84 °F

    Chance
    T-storms then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 64. Southwest wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 60%.

    Low: 64 °F

    Heavy Rain
    then Slight
    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 82. Northwest wind around 5 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 71. South wind around 7 mph.
Wednesday
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Partly sunny, with a high near 84. South wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 64. Southwest wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 60%.
Juneteenth
Sunny, with a high near 82. Northwest wind around 5 mph.
Thursday Night
Mostly clear, with a low around 65. Calm wind.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 71.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 74.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Donnellson IL
 39.06°N 89.5°W (Elev. 600 ft)
Last Update:
10:52 pm CDT Jun 17, 2025
Forecast Valid:
2am CDT Jun 18, 2025-6pm CDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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