Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

53°F

12°C

Humidity 74%
Wind Speed SW 9 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 5 Nov 8:54 am CST
Extended Forecast for

2 Miles WNW Grafton IL

  • Today

    Today: Increasing clouds, with a high near 58. West wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 58 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A slight chance of drizzle between 7pm and 10pm.  Cloudy, with a low around 45. Northwest wind around 10 mph.

    Low: 45 °F

    Slight Chance
    Drizzle then
    Cloudy

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 54. North wind 7 to 11 mph.

    High: 54 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 34. North wind around 6 mph becoming calm  in the evening.

    Low: 34 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 54. Light northwest wind.

    High: 54 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 58. West wind 10 to 14 mph, with gusts as high as 21 mph.
Tonight
A slight chance of drizzle between 7pm and 10pm. Cloudy, with a low around 45. Northwest wind around 10 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 54. North wind 7 to 11 mph.
Friday Night
Mostly clear, with a low around 34. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 54. Light northwest wind.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 59.
Sunday Night
Clear, with a low around 39.
Monday
Sunny, with a high near 65.
Monday Night
Clear, with a low around 43.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 44.
Veterans Day
Mostly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Grafton IL
 38.98°N 90.47°W (Elev. 689 ft)
5:57 am CST Nov 5, 2026
9am CST Nov 5, 2026-6pm CST Nov 11, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database