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

32°F

0°C

Humidity 74%
Wind Speed E 6 mph
Barometer 30.14 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 3 Feb 12:55 am CST
Extended Forecast for

Gillespie IL

  • Overnight

    Overnight: A slight chance of freezing rain after 3am. Cloudy, with a low around 27. Northeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Freezing Rain

  • Tuesday

    Tuesday: A chance of snow and freezing rain before 9am, then a slight chance of freezing rain between 9am and 10am. Mostly cloudy, with a high near 32. North wind 8 to 11 mph. Chance of precipitation is 30%.

    High: 32 °F

    Chance Wintry
    Mix then
    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 15. North wind 6 to 8 mph.

    Low: 15 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 28. North wind 3 to 6 mph.

    High: 28 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 12. Calm wind.

    Low: 12 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 35.

    High: 35 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of freezing rain after 3am. Cloudy, with a low around 27. Northeast wind around 7 mph. Chance of precipitation is 20%.
Tuesday
A chance of snow and freezing rain before 9am, then a slight chance of freezing rain between 9am and 10am. Mostly cloudy, with a high near 32. North wind 8 to 11 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 15. North wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 28. North wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 12. Calm wind.
Thursday
Partly sunny, with a high near 35.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 46.
Friday Night
Mostly clear, with a low around 23.
Saturday
Mostly sunny, with a high near 39.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 38.
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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:
12:26 am CST Feb 3, 2026
Forecast Valid:
1am CST Feb 3, 2026-6pm CST Feb 9, 2026
 
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