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

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

86°F

30°C

Humidity 23%
Wind Speed NW 17 G 28 mph
Barometer 29.78 in (1007.9 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 6 Jun 3:54 pm CDT
Extended Forecast for

Grafton IL

  • Tonight

    Tonight: Clear, with a low around 60. West wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 60 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 83. Northwest wind 6 to 9 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 64. Calm wind becoming southwest 5 to 8 mph after midnight. Chance of precipitation is 50%.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North wind around 6 mph.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 60. West wind 6 to 13 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 83. Northwest wind 6 to 9 mph.
Friday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 64. Calm wind becoming southwest 5 to 8 mph after midnight. Chance of precipitation is 50%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. South wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. North wind around 6 mph.
Sunday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 59.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 57.
Tuesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 79.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 66.
Thursday
Sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Grafton IL
 38.98°N 90.44°W (Elev. 515 ft)
Last Update:
2:37 pm CDT Jun 6, 2024
Forecast Valid:
4pm CDT Jun 6, 2024-6pm CDT Jun 13, 2024
 
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Additional Resources

Radar & Satellite Image

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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