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

23°F

-5°C

Humidity 64%
Wind Speed S 9 mph
Barometer 30.27 in
Dewpoint 13°F (-11°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 24 Feb 1:35 am CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: Partly cloudy, with a low around 19. Calm wind becoming south 5 to 8 mph.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Increasing clouds, with a high near 51. Breezy, with a south wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.

    High: 51 °F

    Increasing
    Clouds and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32. South wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Calm wind becoming northwest around 5 mph.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 35. Northeast wind 3 to 8 mph. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

  • Thursday

    Thursday: A 30 percent chance of rain before noon. Partly sunny, with a high near 50.

    High: 50 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 19. Calm wind becoming south 5 to 8 mph.
Tuesday
Increasing clouds, with a high near 51. Breezy, with a south wind 10 to 15 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.
Tuesday Night
Mostly cloudy, with a low around 32. South wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Wednesday
Partly sunny, with a high near 51. Calm wind becoming northwest around 5 mph.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 35. Northeast wind 3 to 8 mph. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain before noon. Partly sunny, with a high near 50.
Thursday Night
Mostly clear, with a low around 30.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 38.
Saturday
Sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 31.
Sunday
A chance of rain and snow. Partly sunny, with a high near 44. Chance of precipitation is 30%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Monday
A chance of rain and snow. Partly sunny, with a high near 48. Chance of precipitation is 40%.
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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:
12:26 am CST Feb 24, 2026
Forecast Valid:
1am CST Feb 24, 2026-6pm CST Mar 2, 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