Hazardous Weather Conditions
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 Chill | 45°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
Today
High: 53 °F
Mostly Sunny
then Slight
Chance
Showers and
BreezyTonight

Low: 37 °F
Decreasing
CloudsSaturday

High: 60 °F
Patchy Frost
then SunnySaturday Night

Low: 35 °F
Clear
Sunday

High: 66 °F
Sunny
Sunday Night

Low: 38 °F
Mostly Clear
Monday

High: 72 °F
Mostly Sunny
Monday Night

Low: 41 °F
Partly Cloudy
Tuesday

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.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles WNW Old Monroe MO
38.94°N 90.82°W (Elev. 525 ft)
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



