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.

Mostly Cloudy

81°F

27°C

Humidity 54%
Wind Speed S 16 mph
Barometer 29.95 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 13 Apr 1:50 pm CDT
Extended Forecast for

Pierron IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 82. South wind around 18 mph.

    High: 82 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 67. South wind 14 to 17 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. Breezy, with a southwest wind 11 to 20 mph.

    High: 85 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. South wind 10 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.

    Low: 63 °F

    Showers

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
Partly sunny, with a high near 82. South wind around 18 mph.
Tonight
Partly cloudy, with a low around 67. South wind 14 to 17 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 85. Breezy, with a southwest wind 11 to 20 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. South wind 10 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Wednesday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 81. South wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Chance of precipitation is 60%.
Thursday Night
Mostly clear, with a low around 59.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 73. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 41.
Sunday
Sunny, with a high near 62.
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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 pm CDT Apr 13, 2026
Forecast Valid:
1pm CDT Apr 13, 2026-6pm CDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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