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

23°F

-5°C

Humidity 54%
Wind Speed NE 5 mph
Barometer 30.30 in
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 29 Jan 12:50 pm CST
Extended Forecast for

Pierron IL

  • This Afternoon

    This Afternoon: A 30 percent chance of snow, mainly after 5pm. Cloudy, with a high near 22. Northeast wind around 7 mph.

    High: 22 °F

    Chance Snow

  • Tonight

    Tonight: A 50 percent chance of snow, mainly before 11pm. Cloudy, with a low around 5. North wind 5 to 7 mph.

    Low: 5 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny and cold, with a high near 18. North wind 6 to 13 mph.

    High: 18 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 3. Wind chill values as low as -10. North wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 3 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 18. Northwest wind 8 to 14 mph.

    High: 18 °F

    Cold

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 1.

    Low: 1 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 34.

    High: 34 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of snow, mainly after 5pm. Cloudy, with a high near 22. Northeast wind around 7 mph.
Tonight
A 50 percent chance of snow, mainly before 11pm. Cloudy, with a low around 5. North wind 5 to 7 mph.
Friday
Cloudy, then gradually becoming mostly sunny and cold, with a high near 18. North wind 6 to 13 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 3. Wind chill values as low as -10. North wind 9 to 11 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny and cold, with a high near 18. Northwest wind 8 to 14 mph.
Saturday Night
Mostly clear, with a low around 1.
Sunday
Partly sunny, with a high near 26.
Sunday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 16.
Monday
Partly sunny, with a high near 34.
Monday Night
Mostly cloudy, with a low around 19.
Tuesday
Mostly cloudy, with a high near 36.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of snow. Mostly cloudy, with a high near 34.
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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:
11:07 am CST Jan 29, 2026
Forecast Valid:
1pm CST Jan 29, 2026-6pm CST Feb 4, 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