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

64°F

18°C

Humidity 60%
Wind Speed NW 8 mph
Barometer 29.73 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 15 Nov 5:50 pm CST
Extended Forecast for

2 Miles WSW Pierron IL

  • Tonight

    Tonight: Mostly clear, with a low around 41. North wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58. Northwest wind 5 to 9 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.

    Low: 33 °F

    Clear

  • Monday

    Monday: A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 60. Light east wind becoming southeast 5 to 10 mph in the morning.

    High: 60 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, then showers and possibly a thunderstorm after midnight. Low around 45. Southeast wind around 10 mph. Chance of precipitation is 80%.

    Low: 45 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms. Partly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 63.

    High: 63 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 50.

    Low: 50 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 41. North wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 58. Northwest wind 5 to 9 mph.
Sunday Night
Clear, with a low around 33. Northwest wind around 5 mph becoming calm in the evening.
Monday
A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 60. Light east wind becoming southeast 5 to 10 mph in the morning.
Monday Night
Showers likely, then showers and possibly a thunderstorm after midnight. Low around 45. Southeast wind around 10 mph. Chance of precipitation is 80%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 69. Chance of precipitation is 30%.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 46.
Wednesday
A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 63.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 50.
Thursday
Rain. High near 64. Chance of precipitation is 80%.
Thursday Night
Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 80%.
Friday
Rain likely. Partly sunny, with a high near 63. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 42.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Pierron IL
 38.78°N 89.6°W (Elev. 525 ft)
Last Update:
4:46 pm CST Nov 15, 2025
Forecast Valid:
6pm CST Nov 15, 2025-6pm CST Nov 22, 2025
 
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