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

43°F

6°C

Humidity 66%
Wind Speed W 18 G 32 mph
Barometer 29.68 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 10 Dec 8:50 am CST
Extended Forecast for

Gillespie IL

Wind Advisory until December 10, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until December 10, 12:00pm

    NOW until 12:00pm Wed

    Wind Advisory

  • Today

    High: 41 °F⇓

    Breezy.
    Sprinkles/Flurries
    Likely then
    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. Northwest wind 5 to 11 mph.

    Low: 22 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after 3pm. Increasing clouds, with a high near 34. Northwest wind around 6 mph becoming light and variable.

    High: 34 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow, mixing with rain after 9pm, then gradually ending. Mostly cloudy, with a low around 28. Southeast wind 6 to 8 mph becoming west after midnight. Chance of precipitation is 40%.

    Low: 28 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 36. Northwest wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 36 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 27.

    High: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy

Detailed Forecast

Today
Sprinkles and flurries likely, becoming all flurries after 10am, then gradually ending. Cloudy, with a temperature falling to around 31 by 5pm. Breezy, with a northwest wind 14 to 24 mph, with gusts as high as 41 mph.
Tonight
Mostly cloudy, with a low around 22. Northwest wind 5 to 11 mph.
Thursday
A 20 percent chance of snow after 3pm. Increasing clouds, with a high near 34. Northwest wind around 6 mph becoming light and variable.
Thursday Night
A chance of snow, mixing with rain after 9pm, then gradually ending. Mostly cloudy, with a low around 28. Southeast wind 6 to 8 mph becoming west after midnight. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 36. Northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 27.
Saturday Night
Mostly cloudy, with a low around 3.
Sunday
Sunny and cold, with a high near 18.
Sunday Night
Mostly clear, with a low around 7.
Monday
Mostly sunny, with a high near 34.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 23.
Tuesday
Partly sunny, with a high near 42.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gillespie IL
 39.12°N 89.81°W (Elev. 653 ft)
Last Update:
8:26 am CST Dec 10, 2025
Forecast Valid:
9am CST Dec 10, 2025-6pm CST Dec 16, 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