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.

Partly Cloudy

25°F

-4°C

Humidity 50%
Wind Speed NW 16 G 24 mph
Barometer 30.47 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 22 Feb 10:45 am CST
Extended Forecast for

Pierron IL

  • Today

    Today: Sunny, with a high near 29. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 34 mph.

    High: 29 °F

    Sunny and
    Blustery

  • Tonight

    Tonight: Increasing clouds, with a low around 14. Northwest wind 15 to 18 mph, with gusts as high as 29 mph.

    Low: 14 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 33. Northwest wind 9 to 17 mph, with gusts as high as 28 mph.

    High: 33 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Calm wind becoming south 5 to 7 mph after midnight.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 50. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 50 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain, mainly before noon. Partly sunny, with a high near 50.

    High: 50 °F

    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 29. Blustery, with a northwest wind 20 to 22 mph, with gusts as high as 34 mph.
Tonight
Increasing clouds, with a low around 14. Northwest wind 15 to 18 mph, with gusts as high as 29 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 33. Northwest wind 9 to 17 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 18. Calm wind becoming south 5 to 7 mph after midnight.
Tuesday
Mostly cloudy, with a high near 50. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 54.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 37.
Thursday
A 40 percent chance of rain, mainly before noon. Partly sunny, with a high near 50.
Thursday Night
Mostly clear, with a low around 28.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 39.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 61.
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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:
7:56 am CST Feb 22, 2026
Forecast Valid:
10am CST Feb 22, 2026-6pm CST Feb 28, 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