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

57°F

14°C

Humidity 89%
Wind Speed NA
Barometer 30.20 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 15 Oct 2:35 am CDT
Extended Forecast for

East Gillespie IL

  • Overnight

    Overnight: Mostly clear, with a low around 57. East wind around 5 mph becoming calm.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Light and variable wind.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Calm wind becoming east around 5 mph after midnight.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. Southeast wind 6 to 9 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. Southeast wind around 8 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely, with thunderstorms also possible after 1am. Partly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 57. East wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 82. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 56. Calm wind becoming east around 5 mph after midnight.
Thursday
Sunny, with a high near 79. Southeast wind 6 to 9 mph.
Thursday Night
Partly cloudy, with a low around 55. Southeast wind around 8 mph.
Friday
Partly sunny, with a high near 79.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 60.
Saturday
Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 80%.
Saturday Night
Showers likely, with thunderstorms also possible after 1am. Partly cloudy, with a low around 46. Chance of precipitation is 60%.
Sunday
A 20 percent chance of showers before 1pm. Sunny, with a high near 65.
Sunday Night
Clear, with a low around 41.
Monday
Sunny, with a high near 72.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 48.
Tuesday
A 20 percent chance of showers. Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Gillespie IL
 39.14°N 89.81°W (Elev. 663 ft)
Last Update:
2:25 am CDT Oct 15, 2025
Forecast Valid:
2am CDT Oct 15, 2025-6pm CDT Oct 21, 2025
 
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