National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Partly Cloudy

68°F

20°C

Humidity 88%
Wind Speed S 3 mph
Barometer 29.96 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Sep 9:50 pm CDT
Extended Forecast for

Mount Olive IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely after 1am. Cloudy, with a low around 64. South wind around 6 mph. Chance of precipitation is 70%.

    Low: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: Showers likely, with thunderstorms also possible after 10am. Cloudy, with a high near 76. South wind around 8 mph. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers. Partly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 80 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.

    Low: 59 °F

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers. Partly sunny, with a high near 74.

    High: 74 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Partly cloudy, with a low around 56.

    Low: 56 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely after 1am. Cloudy, with a low around 64. South wind around 6 mph. Chance of precipitation is 70%.
Monday
Showers likely, with thunderstorms also possible after 10am. Cloudy, with a high near 76. South wind around 8 mph. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers. Partly cloudy, with a low around 63. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 60%.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 74.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 56.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Olive IL
 39.07°N 89.73°W (Elev. 669 ft)
Last Update:
10:06 pm CDT Sep 21, 2025
Forecast Valid:
10pm CDT Sep 21, 2025-6pm CDT Sep 28, 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