Onslow Beach Weather Forecast
- 77
- 85
Slight Chance Thunderstorms
- 77
- 86
Chance Thunderstorms
- 75
- 86
Chance Thunderstorms
- 74
- 87
Slight Chance Thunderstorms
- 73
- 85
Mostly Sunny
- 73
- 84
Mostly Sunny
Today 11 Sep Coastal Onslow
Mostly sunny. A slight chance of Showers and Thunderstorms. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.
Tonight 11 Sep Coastal Onslow
Partly cloudy in the Evening, then clearing. Lows in the mid 70s. Southwest Winds 5 to 10 Mph.
Onslow Beach Temperature Statistics
September Temperature
MCAS New River (13 miles)
Lowest 8 September, 2026
66 °FAverage September
79.6 °FHighest 5 September, 2026
96.1 °F
Climate (2021–2026)
MCAS New River (13 miles)
Average Low 2021–2026
54.4 °FAverage 2021–2026
63.8 °FAverage High 2021–2026
73.6 °F