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. Charles, St. Charles County Smartt Airport (KSET)

Lat: 38.93°NLon: 90.43°WElev: 436ft.

A Few Clouds

72°F

22°C

Humidity 64%
Wind Speed NA
Barometer 30.25 in (1024.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 25 Sep 11:54 am CDT
Extended Forecast for

2 Miles W Grafton IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 73. Northeast wind around 6 mph.

    High: 73 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 59. Northeast wind 3 to 6 mph.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers between noon and 4pm. Mostly cloudy, with a high near 69. East wind 3 to 5 mph. Chance of precipitation is 20%.

    High: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 59. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 59 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 75. Calm wind becoming east around 5 mph in the morning.

    High: 75 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a high near 73. Northeast wind around 6 mph.
Tonight
Mostly cloudy, with a low around 59. Northeast wind 3 to 6 mph.
Saturday
A slight chance of showers between noon and 4pm. Mostly cloudy, with a high near 69. East wind 3 to 5 mph. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 59. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 75. Calm wind becoming east around 5 mph in the morning.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
A 30 percent chance of showers after 1pm. Partly 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 66. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 66.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Grafton IL
 38.98°N 90.47°W (Elev. 689 ft)
Last Update:
11:56 am CDT Sep 25, 2026
Forecast Valid:
12pm 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