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.

Partly Cloudy

15°F

-9°C

Humidity 57%
Wind Speed W 10 mph
Barometer 30.28 in
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 17 Jan 11:55 pm CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: Partly cloudy, with a low around 12. West wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 12 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of flurries before 2pm, then a slight chance of snow between 2pm and 3pm, then a chance of flurries after 3pm. Increasing clouds, with a high near 31. South wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 31 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A chance of flurries before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 11. Blustery, with a southwest wind 11 to 21 mph becoming northwest after midnight. Winds could gust as high as 29 mph.

    Low: 11 °F

    Partly Cloudy
    then Mostly
    Clear and
    Blustery

  • M.L.King Day

    M.L.King Day: Sunny and cold, with a high near 20. Northwest wind 8 to 18 mph, with gusts as high as 26 mph.

    High: 20 °F

    Cold

  • Monday Night

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

    Low: 9 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly 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 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 12. West wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday
A chance of flurries before 2pm, then a slight chance of snow between 2pm and 3pm, then a chance of flurries after 3pm. Increasing clouds, with a high near 31. South wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Sunday Night
A chance of flurries before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 11. Blustery, with a southwest wind 11 to 21 mph becoming northwest after midnight. Winds could gust as high as 29 mph.
M.L.King Day
Sunny and cold, with a high near 20. Northwest wind 8 to 18 mph, with gusts as high as 26 mph.
Monday Night
Mostly clear, with a low around 9. Northwest wind around 6 mph becoming calm.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Partly cloudy, with a low around 26.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
Sunny, with a high near 35.
Thursday Night
Partly cloudy, with a low around 22.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 42.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 30.
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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:
9:36 pm CST Jan 17, 2026
Forecast Valid:
12am CST Jan 18, 2026-6pm CST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation