Onset Beach Weather Forecast
- 65
- 86
Rain Showers
- 61
- 71
Chance Rain Showers
- 61
- 68
Chance Thunderstorms
- 64
- 71
Chance Rain Showers
- 65
- 75
Mostly Cloudy
- 68
- 78
Mostly Cloudy
Today 25 Jun Southern Plymouth
Sunny. Scattered Showers with isolated Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds and heavy rainfall this afternoon. Hot with Highs in the lower 90s. Temperature falling into the mid 80s this afternoon. Northwest Winds 5 to 10 Mph, becoming northeast this afternoon. Chance of rain 30 percent. Heat index Values up to 102.
Tonight 25 Jun Southern Plymouth
Partly cloudy in the Evening, then becoming mostly cloudy. Isolated Showers. Humid with Lows in the mid 60s. East Winds 5 to 10 Mph, becoming northeast after midnight. Chance of rain 20 percent.
Onset Beach Temperature Statistics
June Temperature
Otis Air National Guard Base (9.3 miles)
Lowest 1 June, 2025
51.8 °FAverage June
65.4 °FHighest 5 June, 2025
82.4 °F
Climate (2020–Present)
Otis Air National Guard Base (9.3 miles)
Average Low 2020–2025
44.2 °FAverage 2020–2025
52.3 °FAverage High 2020–2025
59.5 °F