National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

62°F

17°C

Humidity 92%
Wind Speed S 9 mph
Barometer 29.79 in
Dewpoint 59°F (15°C)
Visibility 7.00 mi
Last update 26 Dec 12:15 am CST
Extended Forecast for

Pierron IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. South wind 8 to 10 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 67. Southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 67 °F

    Patchy Fog
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. Northwest wind around 5 mph becoming calm.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 66. Southeast wind 6 to 10 mph.

    High: 66 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after midnight. Cloudy, with a low around 59. South wind 8 to 10 mph.

    Low: 59 °F

    Cloudy then
    Chance Rain

  • Sunday

    Sunday: Rain likely, then showers and possibly a thunderstorm after 9am. High near 70. Chance of precipitation is 80%.

    High: 70 °F

    Showers

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow, mainly before midnight. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 60%.

    Low: 21 °F

    Blustery.
    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Monday

    Monday: Mostly sunny, with a high near 27. Blustery.

    High: 27 °F

    Mostly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. South wind 8 to 10 mph.
Friday
Patchy fog between 8am and 9am. Otherwise, partly sunny, with a high near 67. Southwest wind 7 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 45. Northwest wind around 5 mph becoming calm.
Saturday
Partly sunny, with a high near 66. Southeast wind 6 to 10 mph.
Saturday Night
A 40 percent chance of rain after midnight. Cloudy, with a low around 59. South wind 8 to 10 mph.
Sunday
Rain likely, then showers and possibly a thunderstorm after 9am. High near 70. Chance of precipitation is 80%.
Sunday Night
Rain likely, possibly mixed with snow, mainly before midnight. Mostly cloudy, with a low around 21. Blustery. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 27. Blustery.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Partly cloudy, with a low around 23.
New Year's Day
Sunny, with a high near 37.
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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 Dec 25, 2025
Forecast Valid:
12am CST Dec 26, 2025-6pm CST Jan 1, 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