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

16°F

-9°C

Humidity 57%
Wind Speed NW 16 G 21 mph
Barometer 30.23 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill1°F (-17°C)
Last update 17 Mar 6:50 am CDT
Extended Forecast for

Pierron IL

  • Today

    Today: Increasing clouds, with a high near 33. Northwest wind 6 to 11 mph becoming southwest in the afternoon.

    High: 33 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A chance of snow before 5am, then a chance of rain and snow. Cloudy, with a low around 29. Light southeast wind becoming south 9 to 14 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

    Low: 29 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 30 percent chance of rain before 7am. Cloudy through mid morning, then gradual clearing, with a high near 61. South wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.

    High: 61 °F

    Chance Rain
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. Light and variable wind.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69. South wind 3 to 7 mph.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 33. Northwest wind 6 to 11 mph becoming southwest in the afternoon.
Tonight
A chance of snow before 5am, then a chance of rain and snow. Cloudy, with a low around 29. Light southeast wind becoming south 9 to 14 mph in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of rain before 7am. Cloudy through mid morning, then gradual clearing, with a high near 61. South wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph.
Wednesday Night
Mostly cloudy, with a low around 40. Light and variable wind.
Thursday
Mostly sunny, with a high near 69. South wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 45.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 52.
Sunday
Sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 55.
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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:
3:31 am CDT Mar 17, 2026
Forecast Valid:
6am CDT Mar 17, 2026-6pm CDT Mar 23, 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