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.

Mostly Cloudy

33°F

1°C

Humidity 71%
Wind Speed NE 6 mph
Barometer 30.15 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 2 Feb 11:55 pm CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: A slight chance of snow before 4am, then a slight chance of freezing rain between 4am and 5am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 29. East wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Wintry Mix

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 33. Northeast wind 5 to 10 mph becoming north in the afternoon.

    High: 33 °F

    Chance Snow
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 18. North wind around 6 mph.

    Low: 18 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 30. North wind 3 to 6 mph.

    High: 30 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 13. Calm wind.

    Low: 13 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of snow before 4am, then a slight chance of freezing rain between 4am and 5am, then a slight chance of snow after 5am. Mostly cloudy, with a low around 29. East wind 3 to 5 mph. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of snow, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 33. Northeast wind 5 to 10 mph becoming north in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 18. North wind around 6 mph.
Wednesday
Partly sunny, with a high near 30. North wind 3 to 6 mph.
Wednesday Night
Mostly clear, with a low around 13. Calm wind.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 29.
Friday
Mostly sunny, with a high near 47.
Friday Night
Mostly clear, with a low around 22.
Saturday
Mostly sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 46.
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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:
10:06 pm CST Feb 2, 2026
Forecast Valid:
12am CST Feb 3, 2026-6pm CST Feb 9, 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