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

25°F

-4°C

Humidity 69%
Wind Speed SW 6 mph
Barometer 30.33 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 10 Nov 9:50 pm CST
Extended Forecast for

Gillespie IL

  • Tonight

    Tonight: Increasing clouds, with a low around 22. West wind 5 to 8 mph becoming south after midnight.

    Low: 22 °F

    Increasing
    Clouds

  • Veterans Day

    Veterans Day: Cloudy, then gradually becoming mostly sunny, with a high near 52. South wind 9 to 18 mph, with gusts as high as 30 mph.

    High: 52 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 34. West wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 34 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 61. Northwest wind 6 to 11 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32. Light and variable wind.

    Low: 32 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 22. West wind 5 to 8 mph becoming south after midnight.
Veterans Day
Cloudy, then gradually becoming mostly sunny, with a high near 52. South wind 9 to 18 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly clear, with a low around 34. West wind 6 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 61. Northwest wind 6 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 32. Light and variable wind.
Thursday
Partly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 53.
Sunday
A 50 percent chance of rain. Partly sunny, with a high near 64.
Sunday Night
A 40 percent chance of rain. Partly cloudy, with a low around 39.
Monday
A 40 percent chance of rain. Mostly sunny, with a high near 55.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gillespie IL
 39.12°N 89.81°W (Elev. 653 ft)
Last Update:
8:26 pm CST Nov 10, 2025
Forecast Valid:
9pm CST Nov 10, 2025-6pm CST Nov 17, 2025
 
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