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.

Thunderstorm Heavy Rain

53°F

12°C

Humidity 97%
Wind Speed SE 8 mph
Barometer 29.95 in
Dewpoint 52°F (11°C)
Visibility 1.25 mi
Wind Chill50°F (10°C)
Last update 4 Mar 11:15 pm CST
Extended Forecast for

Pierron IL

Dense Fog Advisory until March 5, 06:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until March 5, 06:00am

    NOW until 6:00am Thu

    Dense Fog Advisory

  • Tonight

    Low: 53 °F

    Showers and
    Areas Dense
    Fog

  • Thursday

    Thursday: Showers and thunderstorms likely before 9am, then a chance of showers between 9am and 10am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 66. West wind 5 to 10 mph becoming light and variable in the afternoon. Chance of precipitation is 70%.

    High: 66 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 56. Light and variable wind becoming southeast 5 to 9 mph after midnight.

    Low: 56 °F

    Chance
    T-storms

  • Friday

    Friday: Scattered showers, mainly before noon. Partly sunny, with a high near 77. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 30%.

    High: 77 °F

    Scattered
    Showers and
    Breezy

  • Friday Night

    Friday Night: Scattered showers before 9pm, then scattered showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 56. South wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Scattered
    T-storms then
    Showers

  • Saturday

    Saturday: Showers likely, mainly before noon. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely then
    Isolated
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Areas of dense fog. Low around 53. Southeast wind 5 to 7 mph becoming southwest after midnight. Chance of precipitation is 100%.
Thursday
Showers and thunderstorms likely before 9am, then a chance of showers between 9am and 10am. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 66. West wind 5 to 10 mph becoming light and variable in the afternoon. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 56. Light and variable wind becoming southeast 5 to 9 mph after midnight.
Friday
Scattered showers, mainly before noon. Partly sunny, with a high near 77. Breezy, with a south wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 30%.
Friday Night
Scattered showers before 9pm, then scattered showers and thunderstorms between 9pm and midnight, then showers and possibly a thunderstorm after midnight. Low around 56. South wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday
Showers likely, mainly before noon. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 47.
Monday
Sunny, with a high near 75.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Breezy. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 48. Chance of precipitation is 90%.
Wednesday
Showers likely. Mostly cloudy, with a high near 57. Breezy. Chance of precipitation is 60%.
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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:
10:26 pm CST Mar 4, 2026
Forecast Valid:
11pm CST Mar 4, 2026-6pm CDT Mar 11, 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