National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

14°F

-10°C

Humidity 67%
Wind Speed SW 12 mph
Barometer 30.20 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 18 Jan 8:50 am CST
Extended Forecast for

Pierron IL

  • Today

    Today: Increasing clouds, with a high near 29. South wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 29 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 9. Blustery, with a southwest wind 9 to 14 mph becoming northwest 16 to 21 mph after midnight. Winds could gust as high as 34 mph.

    Low: 9 °F

    Mostly Cloudy
    then Mostly
    Clear and
    Blustery

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 20. Wind chill values as low as -10. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 20 °F

    Sunny and
    Blustery then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 9. West wind around 6 mph becoming calm.

    Low: 9 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. South wind 6 to 13 mph.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 34.

    High: 34 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 29. South wind 9 to 14 mph, with gusts as high as 22 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 9. Blustery, with a southwest wind 9 to 14 mph becoming northwest 16 to 21 mph after midnight. Winds could gust as high as 34 mph.
M.L.King Day
Sunny and cold, with a high near 20. Wind chill values as low as -10. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 9. West wind around 6 mph becoming calm.
Tuesday
Mostly sunny, with a high near 35. South wind 6 to 13 mph.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 21.
Thursday
Sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 24.
Friday
A 30 percent chance of rain. Mostly cloudy, with a high near 43.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 30.
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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:
8:22 am CST Jan 18, 2026
Forecast Valid:
9am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database Weather Element Forecast

Chance of Precipitation