Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

80°F

27°C

Humidity 45%
Wind Speed NE 3 mph
Barometer 30.14 in (1020.3 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 23 Jun 3:54 pm CDT
Extended Forecast for

5 Miles N Grafton IL

  • Tonight

    Tonight: Partly cloudy, with a low around 62. Light and variable wind becoming southeast around 5 mph after midnight.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 82. South wind 5 to 7 mph becoming southwest in the afternoon.  Chance of precipitation is 30%.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 65. Light southwest wind.

    Low: 65 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 1pm.  Partly sunny, with a high near 84. Light south wind.  Chance of precipitation is 70%.

    High: 84 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms.  Low around 66. Southeast wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 80%.

    Low: 66 °F

    T-storms

  • Friday

    Friday: Showers and thunderstorms.  High near 82. Chance of precipitation is 80%.

    High: 82 °F

    T-storms

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 88.

    High: 88 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 62. Light and variable wind becoming southeast around 5 mph after midnight.
Wednesday
A slight chance of showers and thunderstorms before noon, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82. South wind 5 to 7 mph becoming southwest in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65. Light southwest wind.
Thursday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 84. Light south wind. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms. Low around 66. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Friday
Showers and thunderstorms. High near 82. Chance of precipitation is 80%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Sunday
Sunny, with a high near 94.
Sunday Night
Mostly clear, with a low around 75.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 95.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Grafton IL
 39.05°N 90.44°W (Elev. 594 ft)
9:46 am CDT Jun 23, 2026
4pm CDT Jun 23, 2026-6pm CDT Jun 30, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database