South Shore Weather Forecast
- 78
- 92
Slight Chance Thunderstorms
- 78
- 97
Hot
- 76
- 98
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. A slight chance of Showers and Thunderstorms in the evening. Humid with Lows in the upper 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 106 early in the evening.
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