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

27°F

-3°C

Humidity 39%
Wind Speed NW 7 mph
Barometer 30.03 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 15 Jan 12:45 pm CST
Extended Forecast for

Pierron IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 32. West wind around 7 mph becoming south.

    High: 32 °F

    Sunny

  • Tonight

    Tonight: Snow likely, mainly before 1am. Increasing clouds, with a temperature rising to around 32 by 4am. South wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 26 °F⇑

    Snow Likely

  • Friday

    Friday: Scattered sprinkles between 3pm and 4pm, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 44. West wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 44 °F

    Mostly Cloudy
    then Isolated
    Sprinkles/Snow

  • Friday Night

    Friday Night: Scattered snow showers, mainly before midnight. Mostly cloudy, with a low around 21. West wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    Low: 21 °F

    Scattered
    Snow Showers

  • Saturday

    Saturday: Partly sunny, with a high near 25. West wind 11 to 17 mph.

    High: 25 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 32. West wind around 7 mph becoming south.
Tonight
Snow likely, mainly before 1am. Increasing clouds, with a temperature rising to around 32 by 4am. South wind 6 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday
Scattered sprinkles between 3pm and 4pm, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 44. West wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Friday Night
Scattered snow showers, mainly before midnight. Mostly cloudy, with a low around 21. West wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 25. West wind 11 to 17 mph.
Saturday Night
Partly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 13.
M.L.King Day
Mostly sunny, with a high near 24.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly sunny, with a high near 43.
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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:
11:21 am CST Jan 15, 2026
Forecast Valid:
1pm CST Jan 15, 2026-6pm CST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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