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

37°F

3°C

Humidity 81%
Wind Speed Calm
Barometer 29.94 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 26 Feb 11:55 pm CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: Mostly clear, with a low around 35. Southwest wind 3 to 5 mph.

    Low: 35 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. South wind 6 to 8 mph becoming north after midnight.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 61. Northeast wind 6 to 10 mph becoming southeast in the afternoon.

    High: 61 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29. North wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain and snow after noon. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.

    High: 42 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow. Low around 28. Chance of precipitation is 80%.

    Low: 28 °F

    Rain/Snow

  • Monday

    Monday: A slight chance of rain and snow before noon. Mostly cloudy, with a high near 41. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Chance Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 35. Southwest wind 3 to 5 mph.
Friday
Sunny, with a high near 68. Light southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Friday Night
Mostly clear, with a low around 38. South wind 6 to 8 mph becoming north after midnight.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 61. Northeast wind 6 to 10 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 29. North wind 10 to 13 mph, with gusts as high as 21 mph.
Sunday
A chance of rain and snow after noon. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.
Sunday Night
Rain and snow. Low around 28. Chance of precipitation is 80%.
Monday
A slight chance of rain and snow before noon. Mostly cloudy, with a high near 41. Chance of precipitation is 20%.
Monday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 30.
Tuesday
Rain likely. Cloudy, with a high near 45. Chance of precipitation is 60%.
Tuesday Night
Rain likely. Cloudy, with a low around 37. Chance of precipitation is 60%.
Wednesday
Rain likely. Cloudy, with a high near 56. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Cloudy, with a low around 46. Chance of precipitation is 60%.
Thursday
Rain likely. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pierron IL
 38.78°N 89.57°W (Elev. 512 ft)
Last Update:
10:26 pm CST Feb 26, 2026
Forecast Valid:
12am CST Feb 27, 2026-6pm CST Mar 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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