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

Significant Coastal Impacts from Nor'Easter; Hurricane Nolo Bring Gusty Winds and Heavy Rain to Hawaii

A nor'easter will continue to bring significant coastal impacts to the Mid-Atlantic and New England into Monday. Moderate to major coastal flooding, heavy rain, strong winds, and high surf are expected. Hurricane Nolo will remain south of the Big Island of Hawaii with gusty winds and heavy rainfall that may bring significant, life-threatening flooding and mudslides through the weekend. Read More >

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Mostly Cloudy

59°F

15°C

Humidity 88%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 27 Sep 6:50 am CDT
Extended Forecast for

Saint Jacob IL

  • Today

    Today: A 40 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 74. Light and variable wind.

    High: 74 °F

    Chance
    Showers then
    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Light northeast wind.

    Low: 54 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 78. Calm wind.

    High: 78 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 85.

    High: 85 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

Detailed Forecast

Today
A 40 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 74. Light and variable wind.
Tonight
Partly cloudy, with a low around 54. Light northeast wind.
Monday
Sunny, with a high near 78. Calm wind.
Monday Night
Mostly clear, with a low around 53. Calm wind.
Tuesday
Sunny, with a high near 82. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 63.
Wednesday
Mostly cloudy, with a high near 85.
Wednesday Night
A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 68.
Thursday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Jacob IL
 38.72°N 89.77°W (Elev. 499 ft)
Last Update:
6:51 am CDT Sep 27, 2026
Forecast Valid:
7am CDT Sep 27, 2026-6pm CDT Oct 3, 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