Marion Bay Weather Forecast
- 53
- 66
Mostly Cloudy
- 53
- 64
Rain Showers Likely
- 56
- 66
Rain Showers Likely
- 55
- 70
Chance Rain Showers
- 54
- 72
Chance Rain Showers
- 53
- 70
Partly Sunny
Today 18 Sep North St. Louis
Cloudy. Highs in the mid 60s. East Winds 5 to 10 Mph.
Tonight 18 Sep North St. Louis
Mostly cloudy. Lows in the lower 50s. East Winds around 5 Mph.
Marion Bay Temperature Statistics
September Temperature
Falls International Airport (20.5 miles)
Lowest 6 September, 2025
30 °FAverage September
56.4 °FHighest 15 September, 2025
82 °F
Climate (2020–Present)
Falls International Airport (20.5 miles)
Average Low 2020–2025
29.8 °FAverage 2020–2025
40.9 °FAverage High 2020–2025
51.1 °F