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.

Thunderstorm Light Rain in Vicinity

45°F

7°C

Humidity 86%
Wind Speed NE 10 G 22 mph
Barometer 30.11 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 27 Mar 2:55 am CDT
Extended Forecast for

Mount Olive IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 38. Breezy, with a north wind around 22 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 38 °F

    Showers and
    Breezy

  • Friday

    Friday: A 30 percent chance of showers, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 50. Breezy, with a north wind 18 to 20 mph.

    High: 50 °F

    Breezy.
    Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. North wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. South wind around 9 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 38. Breezy, with a north wind around 22 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of showers, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 50. Breezy, with a north wind 18 to 20 mph.
Friday Night
Mostly clear, with a low around 28. North wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 52. Light and variable wind becoming south 5 to 8 mph in the morning.
Saturday Night
Partly cloudy, with a low around 39. South wind around 9 mph.
Sunday
Mostly cloudy, with a high near 64.
Sunday Night
Partly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 79.
Monday Night
A 20 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 62.
Tuesday
A 20 percent chance of rain. Partly sunny, with a high near 82. Breezy.
Tuesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 60.
Wednesday
A 50 percent chance of rain and thunderstorms. Partly sunny, with a high near 72.
Wednesday Night
Rain and thunderstorms likely. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Thursday
Rain and thunderstorms likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
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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:
2:51 am CDT Mar 27, 2026
Forecast Valid:
3am CDT Mar 27, 2026-6pm CDT Apr 2, 2026
 
Forecast Discussion
 
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Additional Resources

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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