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

54°F

12°C

Humidity 58%
Wind Speed S 10 mph
Barometer 29.91 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 8 Mar 8:50 pm CDT
Extended Forecast for

Pierron IL

  • Tonight

    Tonight: Clear, with a low around 43. South wind around 8 mph.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 74. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60. South wind 9 to 14 mph, with gusts as high as 21 mph.

    Low: 60 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. South wind 8 to 18 mph.

    High: 79 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 55. Southwest wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%.

    Low: 55 °F

    Showers
    Likely then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 65 by 9am, then falling to around 50 during the remainder of the day. Breezy. Chance of precipitation is 100%.

    High: 65 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 36. Breezy.

    Low: 36 °F

    Slight Chance
    Showers and
    Breezy

  • Thursday

    Thursday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 43. South wind around 8 mph.
Monday
Sunny, with a high near 74. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph.
Monday Night
Mostly clear, with a low around 60. South wind 9 to 14 mph, with gusts as high as 21 mph.
Tuesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 79. South wind 8 to 18 mph.
Tuesday Night
Showers and possibly a thunderstorm. Low around 55. Southwest wind 15 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 100%.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 65 by 9am, then falling to around 50 during the remainder of the day. Breezy. Chance of precipitation is 100%.
Wednesday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 36. Breezy.
Thursday
Sunny, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 62.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 57.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 41.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 63. Breezy.
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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:
6:16 pm CDT Mar 8, 2026
Forecast Valid:
9pm CDT Mar 8, 2026-6pm CDT Mar 15, 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