Hazardous Weather Conditions
Current conditions at
St. Charles, St. Charles County Smartt Airport (KSET)
Lat: 38.93°NLon: 90.43°WElev: 436ft.
Fair
96°F
36°C
| Humidity | 52% |
| Wind Speed | N 5 mph |
| Barometer | 30.04 in (1016.6 mb) |
| Dewpoint | 76°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 109°F (43°C) |
| Last update | 16 Aug 2:54 pm CDT |
Extended Forecast for
4 Miles WNW Old Monroe MO
Heat Advisory August 16, 03:04pm until August 18, 08:00pm
NOW until 8:00pm Mon
Heat Advisory
This Afternoon
High: 97 °F
Isolated
T-stormsTonight
Low: 74 °F
Isolated
T-storms then
Mostly ClearSunday
High: 96 °F
Sunny then
Isolated
T-stormsSunday Night
Low: 74 °F
Scattered
T-storms then
Mostly ClearMonday
High: 96 °F
Sunny
Monday Night
Low: 75 °F
Mostly Clear
Tuesday
High: 92 °F
Slight Chance
T-stormsTuesday Night
Low: 71 °F
Chance
T-storms
Detailed Forecast
This Afternoon
Isolated showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 97. Heat index values as high as 111. Calm wind becoming south around 5 mph. Chance of precipitation is 20%.
Tonight
Isolated showers and thunderstorms before 9pm. Partly cloudy, with a low around 74. Light south wind. Chance of precipitation is 20%.
Sunday
Isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 96. Heat index values as high as 105. Light and variable wind. Chance of precipitation is 20%.
Sunday Night
Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 74. Calm wind. Chance of precipitation is 30%.
Monday
Sunny, with a high near 96. Light south wind.
Monday Night
Mostly clear, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 71.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 82. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 87.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
2:36 pm CDT Aug 16, 2025
3pm CDT Aug 16, 2025-6pm CDT Aug 23, 2025
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