Onset Island Weather Forecast

    • 41
    • 61

    Increasing Clouds

    • 57
    • 62

    Rain

    • 55
    • 64

    Chance Rain

    • 53
    • 65

    Chance Rain Showers

    • 47
    • 61

    Slight Chance Rain Showers

    • 48
    • 59

    Partly Sunny

Today 10 Oct Southern Plymouth

Mostly sunny. Highs in the lower 60s. Northwest Winds around 5 Mph.

Tonight 10 Oct Southern Plymouth

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 40s. Southeast Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Onset Island Temperature Statistics

October Temperature

Otis Air National Guard Base (8.7 miles)

  • Lowest 7 October, 2026

    35.6 °F

  • Average October

    59.4 °F

  • Highest 2 October, 2026

    77 °F

Climate (2021–2026)

Otis Air National Guard Base (8.7 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    59 °F
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