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

30°F

-1°C

Humidity 55%
Wind Speed W 20 G 25 mph
Barometer 30.33 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 11 Jan 4:15 am CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: A chance of flurries before 5am. Cloudy, with a low around 28. West wind around 17 mph, with gusts as high as 29 mph.

    Low: 28 °F

    Chance
    Flurries

  • Sunday

    Sunday: Cloudy through mid morning, then clearing, with a high near 37. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 37 °F

    Clearing

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 25. Light and variable wind becoming southwest 5 to 8 mph in the evening.

    Low: 25 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 50. Southwest wind 5 to 10 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. Southwest wind 3 to 8 mph.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 43. Breezy.

    High: 43 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of flurries before 5am. Cloudy, with a low around 28. West wind around 17 mph, with gusts as high as 29 mph.
Sunday
Cloudy through mid morning, then clearing, with a high near 37. Northwest wind 13 to 18 mph decreasing to 7 to 12 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Mostly clear, with a low around 25. Light and variable wind becoming southwest 5 to 8 mph in the evening.
Monday
Sunny, with a high near 50. Southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 34. Southwest wind 3 to 8 mph.
Tuesday
Partly sunny, with a high near 58.
Tuesday Night
A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 38.
Wednesday
Mostly cloudy, with a high near 43. Breezy.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Mostly sunny, with a high near 36.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 27.
Friday
Mostly cloudy, with a high near 41.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Mostly cloudy, with a high near 31.
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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:
4:31 am CST Jan 11, 2026
Forecast Valid:
4am CST Jan 11, 2026-6pm CST Jan 17, 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