Grand Lake St. Marys SPB Weather Forecast
- 52
- 78
Decreasing Clouds
- 51
- 70
Partly Sunny
- 58
- 76
Mostly Sunny
- 66
- 84
Mostly Sunny
- 70
- 89
Slight Chance Thunderstorms
- 62
- 87
Slight Chance Thunderstorms
Today 9 Jun Mercer
Partly cloudy. Highs in the upper 70s. Northwest Winds 10 to 15 Mph. Gusts up to 30 Mph this afternoon.
Tonight 9 Jun Mercer
Partly cloudy. Lows around 50. Northwest Winds 10 to 15 Mph.
Grand Lake St. Marys SPB Temperature Statistics
June Temperature
Versailles Darke County Airport (23 miles)
Lowest 1 June, 2024
51.8 °FAverage June
70.2 °FHighest 4 June, 2024
86 °F
Climate (2019–Present)
Versailles Darke County Airport (23 miles)
Average Low 2019–2024
43.3 °FAverage 2019–2024
52.2 °FAverage High 2019–2024
61.5 °F