Oak Bluffs Harbor Weather Forecast
- 71
- 76
Rain Showers
- 59
- 75
Mostly Sunny
- 68
- 74
Mostly Sunny
- 70
- 79
Rain Showers
- 69
- 79
Rain Showers Likely
- 68
- 80
Chance Rain Showers
Today 18 Jul Dukes
Partly sunny this Morning, then cloudy with Showers with a chance of Thunderstorms this afternoon. Areas of smoke. Locally heavy rainfall possible this afternoon. Highs in the upper 70s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 80 percent.
Tonight 18 Jul Dukes
Showers with a chance of Thunderstorms in the Evening, then a chance of Showers and Thunderstorms after midnight. Locally heavy rainfall possible in the evening. Humid with Lows around 70. Southwest Winds 15 to 20 Mph with Gusts up to 35 Mph. Chance of rain 80 percent.
Oak Bluffs Harbor Temperature Statistics
July Temperature
Marthas Vineyard Airport (5 miles)
Lowest 8 July, 2026
62.1 °FAverage July
73.2 °FHighest 4 July, 2026
91 °F
Climate (2021–2026)
Marthas Vineyard Airport (5 miles)
Average Low 2021–2026
44.4 °FAverage 2021–2026
52.9 °FAverage High 2021–2026
60.6 °F