Grand Lake St. Marys SPB Weather Forecast
- 28
- 38
Rain/Snow
- 32
- 38
Mostly Cloudy
- 41
- 49
Mostly Sunny
- 49
- 53
Chance Rain Showers
- 38
- 55
Rain Showers
- 29
- 43
Rain Showers Likely
Today 5 Dec Mercer
Rain and snow Showers. Highs in the upper 30s. South Winds around 5 Mph, becoming north late. Chance of precipitation 80 percent.
Tonight 5 Dec Mercer
Mostly cloudy. A chance of rain Showers and snow in the evening. Lows in the upper 20s. North Winds 5 to 10 Mph. Chance of precipitation 50 percent.
Grand Lake St. Marys SPB Temperature Statistics
December Temperature
Versailles Darke County Airport (23 miles)
Lowest 3 December, 2023
35.6 °FAverage December
42.9 °FHighest 1 December, 2023
48.2 °F
Climate (2018–Present)
Versailles Darke County Airport (23 miles)
Average Low 2018–2023
43.2 °FAverage 2018–2023
52.1 °FAverage High 2018–2023
61.4 °F