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.

Partly Cloudy

31°F

-1°C

Humidity 65%
Wind Speed NA
Barometer 30.17 in
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 11 Nov 5:55 am CST
Extended Forecast for

Gillespie IL

  • Veterans Day

    Veterans Day: Cloudy, then gradually becoming mostly sunny, with a high near 53. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 53 °F

    Cloudy then
    Decreasing
    Clouds and
    Breezy

  • Tonight

    Tonight: 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. West wind 7 to 10 mph.

    High: 61 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34. West wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 62. Calm wind becoming south 5 to 8 mph in the morning.

    High: 62 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 45.

    Low: 45 °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

  • Saturday

    Saturday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Veterans Day
Cloudy, then gradually becoming mostly sunny, with a high near 53. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.
Tonight
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. West wind 7 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 34. West wind around 5 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 62. Calm wind becoming south 5 to 8 mph in the morning.
Thursday Night
Partly cloudy, with a low around 45.
Friday
Mostly sunny, with a high near 71.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
A 30 percent chance of rain, mainly after midnight. Partly cloudy, with a low around 52.
Sunday
A 40 percent chance of rain. Mostly sunny, with a high near 68.
Sunday Night
A 30 percent chance of rain. Partly cloudy, with a low around 41.
Monday
A 40 percent chance of rain. Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gillespie IL
 39.12°N 89.81°W (Elev. 653 ft)
Last Update:
4:41 am CST Nov 11, 2025
Forecast Valid:
6am CST Nov 11, 2025-6pm CST Nov 17, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation