Current conditions at

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

Lat: 38.93°NLon: 90.43°WElev: 436ft.

Fair

51°F

11°C

Humidity 66%
Wind Speed NW 20 G 29 mph
Barometer 30.23 in (1023.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 16 Oct 8:54 am CDT
Extended Forecast for

4 Miles WNW Old Monroe MO

Frost Advisory October 17, 01:00am until October 17, 09:00am
Click here for hazard details and duration
Frost Advisory
  • Today

    Today: A 20 percent chance of showers after 1pm.  Increasing clouds, with a high near 53. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph.

    High: 53 °F

    Mostly Sunny
    then Slight
    Chance
    Showers and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 37. North wind 6 to 14 mph, with gusts as high as 28 mph.

    Low: 37 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Patchy frost before 8am.  Otherwise, sunny, with a high near 60. Light and variable wind.

    High: 60 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 35. Calm wind.

    Low: 35 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 66. Calm wind becoming south around 6 mph in the afternoon.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Today
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 53. Breezy, with a northwest wind 14 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 37. North wind 6 to 14 mph, with gusts as high as 28 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 60. Light and variable wind.
Saturday Night
Clear, with a low around 35. Calm wind.
Sunday
Sunny, with a high near 66. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Old Monroe MO
 38.94°N 90.82°W (Elev. 525 ft)
8:11 am CDT Oct 16, 2026
9am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
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Additional Resources

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