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

70°F

21°C

Humidity 64%
Wind Speed SE 9 mph
Barometer 29.89 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 16 Apr 7:50 pm CDT
Extended Forecast for

5 Miles N East Gillespie IL

  • Tonight

    Tonight: Mostly clear, with a low around 55. Calm wind becoming south around 6 mph after midnight.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 82. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

    High: 82 °F

    Mostly Sunny
    then Isolated
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms before 1am, then showers and possibly a thunderstorm, mainly after 1am. Low around 45. South wind 14 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%.

    Low: 45 °F

    T-storms

  • Saturday

    Saturday: Showers likely, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 56. Northwest wind 16 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 56 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. Northwest wind 6 to 14 mph, with gusts as high as 22 mph.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 55. Calm wind becoming south around 6 mph after midnight.
Friday
Isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 82. South wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Friday Night
Showers and thunderstorms before 1am, then showers and possibly a thunderstorm, mainly after 1am. Low around 45. South wind 14 to 16 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%.
Saturday
Showers likely, mainly before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 56. Northwest wind 16 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 35. Northwest wind 6 to 14 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 61.
Sunday Night
Mostly clear, with a low around 38.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 54.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N East Gillespie IL
 39.21°N 89.83°W (Elev. 650 ft)
Last Update:
7:06 pm CDT Apr 16, 2026
Forecast Valid:
8pm CDT Apr 16, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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