Lake Saint Louis Weather Forecast
- 53
- 77
Sunny
- 56
- 82
Chance Thunderstorms
- 48
- 75
Sunny
- 55
- 76
Chance Thunderstorms
- 65
- 87
Chance Thunderstorms
- 66
- 90
Chance Rain Showers
- 70
- 91
Chance Thunderstorms
Today 11 May St. Charles
Sunny. Highs in the mid 70s. Northwest Winds 5 to 10 Mph.
Tonight 11 May St. Charles
Clear. Lows in the lower 50s. North Winds 5 to 10 Mph, becoming southeast after midnight.
Lake Saint Louis Temperature Statistics
May Temperature
St. Louis, Spirit Of St. Louis Airport (11.2 miles)
Lowest 7 May, 2026
36.6 °FAverage May
57.5 °FHighest 4 May, 2026
81.6 °F
Climate (2021–Present)
St. Louis, Spirit Of St. Louis Airport (11.2 miles)
Average Low 2021–2026
46 °FAverage 2021–2026
57.4 °FAverage High 2021–2026
68.8 °F