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.

Overcast

71°F

22°C

Humidity 69%
Wind Speed S 15 G 21 mph
Barometer 29.97 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Apr 1:15 am CDT
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. Southwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 65 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82. South wind 10 to 18 mph, with gusts as high as 26 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67. South wind 13 to 17 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.

    Low: 62 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. Southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 82. South wind 10 to 18 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 67. South wind 13 to 17 mph, with gusts as high as 30 mph.
Tuesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Thursday
A chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 81. Chance of precipitation is 40%.
Thursday Night
Mostly clear, with a low around 60.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 72. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 63.
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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:
1:26 am CDT Apr 13, 2026
Forecast Valid:
1am CDT Apr 13, 2026-6pm CDT Apr 19, 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