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.

Fair

72°F

22°C

Humidity 47%
Wind Speed E 7 mph
Barometer 29.90 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 21 Mar 10:45 am CDT
Extended Forecast for

Pierron IL

  • Today

    Today: Sunny, with a high near 84. South wind around 7 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. South wind 7 to 9 mph, with gusts as high as 23 mph.

    Low: 61 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 86. Southwest wind 9 to 17 mph becoming west in the afternoon.

    High: 86 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 37. Breezy, with a north wind 13 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    Low: 37 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 56. Northeast wind 8 to 10 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 69.

    High: 69 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 84. South wind around 7 mph.
Tonight
Mostly clear, with a low around 61. South wind 7 to 9 mph, with gusts as high as 23 mph.
Sunday
Increasing clouds, with a high near 86. Southwest wind 9 to 17 mph becoming west in the afternoon.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 37. Breezy, with a north wind 13 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 56. Northeast wind 8 to 10 mph.
Monday Night
Mostly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 43.
Wednesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 69.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 54.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 79.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 44.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pierron IL
 38.78°N 89.57°W (Elev. 512 ft)
Last Update:
9:41 am CDT Mar 21, 2026
Forecast Valid:
11am CDT Mar 21, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation