Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

23°F

-5°C

Humidity 74%
Wind Speed NW 12 mph
Barometer 30.49 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 30 Nov 5:50 pm CST
Extended Forecast for

Gillespie IL

  • Tonight

    Tonight: Cloudy, with a low around 17. Northwest wind 5 to 8 mph becoming calm  after midnight.

    Low: 17 °F

    Cloudy

  • Monday

    Monday: Snow likely, mainly after 5pm.  Cloudy, with a high near 29. East wind 3 to 6 mph.  Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Cloudy then
    Snow Likely

  • Monday Night

    Monday Night: Snow, mainly before 1am.  Low around 17. Calm wind becoming northwest 5 to 7 mph after midnight.  Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    Low: 17 °F

    Snow then
    Snow Likely

  • Tuesday

    Tuesday: Partly sunny, with a high near 28. West wind around 6 mph becoming calm  in the afternoon.

    High: 28 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 16. Calm wind becoming south around 6 mph after midnight.

    Low: 16 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5.

    Low: 5 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 17. Northwest wind 5 to 8 mph becoming calm after midnight.
Monday
Snow likely, mainly after 5pm. Cloudy, with a high near 29. East wind 3 to 6 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday Night
Snow, mainly before 1am. Low around 17. Calm wind becoming northwest 5 to 7 mph after midnight. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Partly sunny, with a high near 28. West wind around 6 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 16. Calm wind becoming south around 6 mph after midnight.
Wednesday
Partly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 10.
Thursday
Mostly sunny and cold, with a high near 18.
Thursday Night
Mostly cloudy, with a low around 5.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 29.
Friday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21.
Saturday
Mostly cloudy, with a high near 33.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly cloudy, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
Gillespie IL
 39.12°N 89.81°W (Elev. 653 ft)
4:51 pm CST Nov 30, 2025
6pm CST Nov 30, 2025-6pm CST Dec 7, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database