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.

Mostly Cloudy

84°F

29°C

Humidity 62%
Wind Speed W 10 mph
Barometer 29.53 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 17 Jun 9:45 pm CDT
Extended Forecast for

Mount Olive IL

Tornado Watch June 17, 09:59pm until June 17, 10:00pm
Click here for hazard details and duration
...
  •  
    Tornado Watch June 17, 09:59pm until June 17, 10:00pm

    NOW until 10:00pm Wed

    Tornado Watch

  • Tonight

    Low: 66 °F

    Severe
    Thunderstorms
    then Partly
    Cloudy

  • Thursday

    Thursday: Isolated showers between 1pm and 4pm. Increasing clouds, with a high near 77. Northwest wind 6 to 9 mph. Chance of precipitation is 20%.

    High: 77 °F

    Mostly Sunny
    then Isolated
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Northwest wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.

    High: 81 °F

    Showers

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before 11pm. Some of the storms could be severe. Partly cloudy, with a low around 66. West wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%.
Thursday
Isolated showers between 1pm and 4pm. Increasing clouds, with a high near 77. Northwest wind 6 to 9 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 57. Northwest wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 62. Calm wind.
Saturday
Partly sunny, with a high near 83.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 65.
Sunday
Showers and possibly a thunderstorm. High near 81. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 63. Chance of precipitation is 80%.
Monday
Partly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 60.
Wednesday
Mostly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Olive IL
 39.07°N 89.73°W (Elev. 669 ft)
Last Update:
9:01 pm CDT Jun 17, 2026
Forecast Valid:
9pm CDT Jun 17, 2026-6pm CDT Jun 24, 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