Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

55°F

13°C

Humidity 73%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 7 Oct 1:15 am CDT
Extended Forecast for

Mount Olive IL

  • Overnight

    Overnight: Clear, with a low around 51. South wind around 5 mph.

    Low: 51 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. West wind 5 to 11 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53. Northwest wind around 5 mph becoming calm  after midnight.

    Low: 53 °F

    Mostly Clear

  • Thursday

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

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Light and variable wind.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 58.

    Low: 58 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am.  Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 51. South wind around 5 mph.
Wednesday
Sunny, with a high near 86. West wind 5 to 11 mph.
Wednesday Night
Mostly clear, with a low around 53. Northwest wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 53. Light and variable wind.
Friday
Sunny, with a high near 86.
Friday Night
Clear, with a low around 58.
Saturday
Sunny, with a high near 87.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 58.
Sunday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 56.
Columbus Day
Mostly sunny, with a high near 83.
Monday Night
A 20 percent chance of showers. Mostly clear, with a low around 57.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Olive IL
 39.07°N 89.73°W (Elev. 669 ft)
1:26 am CDT Oct 7, 2026
1am CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
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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