Summerville Weather Forecast
- 69
- 91
Mostly Sunny
- 72
- 95
Partly Sunny
- 70
- 93
Partly Sunny
- 68
- 90
Partly Sunny
- 68
- 92
Partly Sunny
- 69
- 89
Mostly Cloudy
Today 15 May Dorchester
Sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph.
Tonight 15 May Dorchester
Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 60s. Southwest Winds 5 to 10 Mph.
Summerville Temperature Statistics
May Temperature
Summerville Airport (6.2 miles)
Lowest 6 May, 2025
53.6 °FAverage May
70.6 °FHighest 9 May, 2025
86 °F
Climate (2020–Present)
Summerville Airport (6.2 miles)
Average Low 2020–2025
56.4 °FAverage 2020–2025
65.8 °FAverage High 2020–2025
76.8 °F