Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

61°F

16°C

Humidity 77%
Wind Speed Calm
Barometer 30.20 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 1 Sep 12:15 am CDT
Extended Forecast for

Gillespie IL

  • Overnight

    Overnight: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 79. East wind 3 to 5 mph.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 57. Light northeast wind.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 79. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 79 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 49. Chance of precipitation is 50%.

    Low: 49 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 54. Calm wind.
Labor Day
Mostly sunny, with a high near 79. East wind 3 to 5 mph.
Monday Night
Mostly cloudy, with a low around 57. Light northeast wind.
Tuesday
Mostly sunny, with a high near 79. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 57. Calm wind.
Wednesday
Sunny, with a high near 82.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 48.
Sunday
Sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Gillespie IL
 39.12°N 89.81°W (Elev. 653 ft)
9:46 pm CDT Aug 31, 2025
1am CDT Sep 1, 2025-6pm CDT Sep 7, 2025
 
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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