National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Coastal Impacts to the Eastern Seaboard; Tropical Storm Nolo to Impact Hawaii

A Nor'easter will bring significant coastal impacts to the Mid-Atlantic and New England through the weekend. Moderate to major coastal flooding, heavy rain, strong winds and high surf expected. Tropical Storm Nolo will continue to strengthen as it moves north toward the Big Island of Hawaii. Heavy rainfall may bring life-threatening, catastrophic flooding and mudslides through the weekend. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fog/Mist

59°F

15°C

Humidity 94%
Wind Speed E 3 mph
Barometer 30.26 in
Dewpoint 57°F (14°C)
Visibility 5.00 mi
Last update 25 Sep 6:50 am CDT
Extended Forecast for

Mount Olive IL

  • Today

    Today: Mostly cloudy, with a high near 73. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 73 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 71. Light east wind.

    High: 71 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 74. Light east wind.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 73. Calm wind becoming northeast around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 71. Light east wind.
Saturday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 58. Calm wind.
Sunday
Partly sunny, with a high near 74. Light east wind.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 79.
Tuesday Night
A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 63.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 78.
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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:
6:36 am CDT Sep 25, 2026
Forecast Valid:
7am CDT Sep 25, 2026-6pm CDT Oct 1, 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