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

41°F

5°C

Humidity 81%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 6 Jan 11:55 pm CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: Mostly clear, with a low around 33. Northwest wind around 5 mph becoming calm.

    Low: 33 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 58. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 58 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 43. Southeast wind 6 to 9 mph.

    Low: 43 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain. High near 63. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%.

    High: 63 °F

    Rain Likely
    then Rain and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 50. South wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely then
    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 47. Breezy.

    High: 47 °F

    Mostly Cloudy
    then Partly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 33. Northwest wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 58. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 43. Southeast wind 6 to 9 mph.
Thursday
Rain. High near 63. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm before 9pm, then rain likely, mainly between 9pm and midnight. Mostly cloudy, with a low around 50. South wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Friday
Mostly cloudy, with a high near 56.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41.
Saturday
Partly sunny, with a high near 47. Breezy.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Mostly sunny, with a high near 36.
Sunday Night
Mostly clear, with a low around 25.
Monday
Sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 47.
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:
10:21 pm CST Jan 6, 2026
Forecast Valid:
12am CST Jan 7, 2026-6pm CST Jan 13, 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