Machens Weather Forecast
- 78
- 97
Hot
- 78
- 98
Slight Chance Thunderstorms
- 75
- 94
Chance Thunderstorms
- 76
- 94
Slight Chance Thunderstorms
- 76
- 94
Mostly Sunny
- 77
- 95
Mostly Sunny
Today 23 Jul St. Charles
Sunny, hot with Highs in the upper 90s. South Winds 5 to 10 Mph. Heat index Values up to 111.
Tonight 23 Jul St. Charles
Partly cloudy. Near steady temperature in the upper 70s. Southeast Winds around 5 Mph.
Machens Temperature Statistics
July Temperature
St. Charles, St. Charles County Smartt Airport (5.6 miles)
Lowest 2 July, 2025
65.6 °FAverage July
80.3 °FHighest 16 July, 2025
94.6 °F
Climate (2020–Present)
St. Charles, St. Charles County Smartt Airport (5.6 miles)
Average Low 2020–2025
47.3 °FAverage 2020–2025
57.6 °FAverage High 2020–2025
68.3 °F