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

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

A Few Clouds

94°F

34°C

Humidity 48%
Wind Speed S 18 G 26 mph
Barometer 29.89 in (1011.5 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 17 Jun 3:54 pm CDT
Extended Forecast for

Grafton IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 93. South wind around 16 mph, with gusts as high as 23 mph.

    High: 93 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, with a low around 73. South wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 73 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. South wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 75. South wind 5 to 13 mph, with gusts as high as 23 mph.

    Low: 75 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 93. South wind 5 to 9 mph.

    High: 93 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 74.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 96.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a steady temperature around 93. South wind around 16 mph, with gusts as high as 23 mph.
Tonight
Mostly cloudy, with a low around 73. South wind 8 to 14 mph, with gusts as high as 23 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 94. South wind 10 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 75. South wind 5 to 13 mph, with gusts as high as 23 mph.
Juneteenth
Mostly sunny, with a high near 93. South wind 5 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 74.
Thursday
Mostly sunny, with a high near 95.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Mostly sunny, with a high near 96.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny and hot, with a high near 98.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 72.
Monday
Sunny, with a high near 91.
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Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Grafton IL
 38.98°N 90.44°W (Elev. 515 ft)
Last Update:
2:22 pm CDT Jun 17, 2024
Forecast Valid:
4pm CDT Jun 17, 2024-6pm CDT Jun 24, 2024
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation