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

72°F

22°C

Humidity 41%
Wind Speed S 9 mph
Barometer 30.16 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 9 Oct 10:50 am CDT
Extended Forecast for

3 Miles ENE Mount Olive IL

  • Today

    Today: Sunny, with a high near 87. South wind 8 to 11 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 58. Southeast wind around 6 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 80. Southeast wind 3 to 8 mph.

    High: 80 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56. East wind 3 to 7 mph.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.

    High: 87 °F

    Sunny then
    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 87. South wind 8 to 11 mph.
Tonight
Increasing clouds, with a low around 58. Southeast wind around 6 mph.
Saturday
Mostly cloudy, with a high near 80. Southeast wind 3 to 8 mph.
Saturday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56. East wind 3 to 7 mph.
Sunday
Mostly sunny, with a high near 80. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 57.
Columbus Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 65.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 87.
Tuesday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 59.
Wednesday
A 40 percent chance of showers. Partly sunny, with a high near 81.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 60.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Mount Olive IL
 39.09°N 89.67°W (Elev. 666 ft)
Last Update:
9:21 am CDT Oct 9, 2026
Forecast Valid:
11am CDT Oct 9, 2026-6pm CDT Oct 15, 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