Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Partly Cloudy

17°F

-8°C

Humidity 62%
Wind Speed N 12 mph
Barometer 30.19 in (1023.0 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill4°F (-16°C)
Last update 17 Mar 4:54 am CDT
Extended Forecast for

5 Miles WNW Fidelity IL

  • Today

    Today: Increasing clouds, with a high near 32. Northwest wind 6 to 13 mph becoming south in the afternoon.

    High: 32 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A chance of snow before 3am, then a chance of rain.  Cloudy, with a low around 27. Southeast wind 7 to 14 mph, with gusts as high as 24 mph.  Chance of precipitation is 50%.

    Low: 27 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny, with a high near 61. South wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 61 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. Calm wind becoming south around 6 mph after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 71. South wind 6 to 8 mph becoming west in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 32. Northwest wind 6 to 13 mph becoming south in the afternoon.
Tonight
A chance of snow before 3am, then a chance of rain. Cloudy, with a low around 27. Southeast wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Wednesday
Partly sunny, then gradually becoming sunny, with a high near 61. South wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly cloudy, with a low around 40. Calm wind becoming south around 6 mph after midnight.
Thursday
Mostly sunny, with a high near 71. South wind 6 to 8 mph becoming west in the afternoon.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Sunny, with a high near 74.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 51.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WNW Fidelity IL
 39.17°N 90.24°W (Elev. 502 ft)
3:31 am CDT Mar 17, 2026
5am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database