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

70°F

21°C

Humidity 38%
Wind Speed NW 20 G 31 mph
Barometer 30.05 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 13 May 12:45 pm CDT
Extended Forecast for

Mount Olive IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 71. Northwest wind around 17 mph, with gusts as high as 24 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 43. North wind 6 to 11 mph becoming light and variable in the evening.

    Low: 43 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 71. Calm wind becoming south 5 to 7 mph in the morning.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 53. Southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 78. South wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85.

    High: 85 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 87. Breezy.

    High: 87 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 71. Northwest wind around 17 mph, with gusts as high as 24 mph.
Tonight
Clear, with a low around 43. North wind 6 to 11 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 71. Calm wind becoming south 5 to 7 mph in the morning.
Thursday Night
A slight chance of showers between 3am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 53. Southeast wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday
Showers likely and possibly a thunderstorm before 1pm. Partly sunny, with a high near 78. South wind 11 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 62.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 85.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 62.
Sunday
Mostly sunny, with a high near 87. Breezy.
Sunday Night
Partly cloudy, with a low around 67.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89. Breezy.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 78. Chance of precipitation is 70%.
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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:
11:26 am CDT May 13, 2026
Forecast Valid:
1pm CDT May 13, 2026-6pm CDT May 19, 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