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.

Overcast

16°F

-9°C

Humidity 62%
Wind Speed NW 12 mph
Barometer 30.56 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 23 Feb 6:50 am CST
Extended Forecast for

Pierron IL

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 30. Northwest wind 6 to 16 mph, with gusts as high as 25 mph.

    High: 30 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 18. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 49. Breezy, with a south wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 49 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. Southwest wind 11 to 16 mph becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 24 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51. Northwest wind around 6 mph becoming light and variable in the afternoon.

    High: 51 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.

    Low: 34 °F

    Slight Chance
    Rain then
    Rain Likely

  • Thursday

    Thursday: A 40 percent chance of rain before noon. Partly sunny, with a high near 47.

    High: 47 °F

    Chance Rain
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 30. Northwest wind 6 to 16 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 18. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Mostly cloudy, with a high near 49. Breezy, with a south wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 32 mph.
Tuesday Night
Mostly cloudy, with a low around 31. Southwest wind 11 to 16 mph becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 24 mph.
Wednesday
Mostly sunny, with a high near 51. Northwest wind around 6 mph becoming light and variable in the afternoon.
Wednesday Night
A slight chance of rain, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 34. Chance of precipitation is 60%.
Thursday
A 40 percent chance of rain before noon. Partly sunny, with a high near 47.
Thursday Night
Mostly clear, with a low around 28.
Friday
Sunny, with a high near 59.
Friday Night
Clear, with a low around 38.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 33.
Sunday
A 30 percent chance of rain. Partly sunny, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Pierron IL
 38.78°N 89.57°W (Elev. 512 ft)
Last Update:
5:31 am CST Feb 23, 2026
Forecast Valid:
7am CST Feb 23, 2026-6pm CST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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