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.

Fair

54°F

12°C

Humidity 72%
Wind Speed SE 6 mph
Barometer 30.14 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 14 May 7:45 am CDT
Extended Forecast for

Mount Olive IL

  • Today

    Today: Sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 52. Southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 52 °F

    Mostly Clear
    then Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. South wind 11 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. South wind 8 to 11 mph.

    Low: 62 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Southwest wind 8 to 11 mph. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 86. Breezy.

    High: 86 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Breezy.

    High: 86 °F

    Breezy. Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.
Tonight
A chance of showers before 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers likely and possibly a thunderstorm after 5am. Increasing clouds, with a low around 52. Southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Friday
Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 78. South wind 11 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. South wind 8 to 11 mph.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Southwest wind 8 to 11 mph. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.
Sunday
Mostly sunny, with a high near 86. Breezy.
Sunday Night
Mostly clear, with a low around 66.
Monday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. Breezy.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 75.
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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:
6:20 am CDT May 14, 2026
Forecast Valid:
8am CDT May 14, 2026-6pm CDT May 20, 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