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

25°F

-4°C

Humidity 63%
Wind Speed W 12 mph
Barometer 30.35 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 22 Feb 2:55 am CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: Partly cloudy, with a low around 20. Northwest wind around 17 mph, with gusts as high as 25 mph.

    Low: 20 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 30. Blustery, with a northwest wind 18 to 24 mph, with gusts as high as 32 mph.

    High: 30 °F

    Mostly Sunny
    and Blustery

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14. Northwest wind 15 to 18 mph, with gusts as high as 26 mph.

    Low: 14 °F

    Partly Cloudy

  • 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.

    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

Detailed Forecast

Overnight
Partly cloudy, with a low around 20. Northwest wind around 17 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 30. Blustery, with a northwest wind 18 to 24 mph, with gusts as high as 32 mph.
Sunday Night
Partly cloudy, with a low around 14. Northwest wind 15 to 18 mph, with gusts as high as 26 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.
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
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ABOUT THIS FORECAST

 
Point Forecast:
Pierron IL
 38.78°N 89.57°W (Elev. 512 ft)
Last Update:
1:41 am CST Feb 22, 2026
Forecast Valid:
3am CST Feb 22, 2026-6pm CST Feb 28, 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