South Shore Weather Forecast
- 78
- 93
Slight Chance Thunderstorms
- 78
- 97
Hot
- 76
- 97
Hot
- 75
- 94
Chance Thunderstorms
- 76
- 94
Chance Thunderstorms
- 75
- 95
Mostly Sunny
Today 22 Jul St. Charles
Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the lower 90s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 108.
Tonight 22 Jul St. Charles
Partly cloudy with a 20 percent chance of Showers. Near steady temperature in the mid 70s. East Winds around 5 Mph.
South Shore Temperature Statistics
July Temperature
St. Charles, St. Charles County Smartt Airport (6.2 miles)
Lowest 2 July, 2025
65.6 °FAverage July
80.1 °FHighest 16 July, 2025
94.6 °F
Climate (2020–Present)
St. Charles, St. Charles County Smartt Airport (6.2 miles)
Average Low 2020–2025
47.3 °FAverage 2020–2025
57.6 °FAverage High 2020–2025
68.3 °F