Onset Island Weather Forecast

    • 26
    • 34

    Partly Sunny

    • 30
    • 35

    Rain/Snow

    • 23
    • 33

    Rain/Snow

    • 16
    • 30

    Chance Snow

    • 30
    • 37

    Rain/Snow Likely

    • 30
    • 40

    Rain Likely

    • 26
    • 38

    Chance Rain

Today 21 Feb Southern Plymouth

Mostly cloudy. Near steady temperature in the mid 30s. Northeast Winds 5 to 10 Mph.

Tonight 21 Feb Southern Plymouth

Mostly cloudy. Cooler with Lows in the lower 20s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Onset Island Temperature Statistics

February Temperature

Otis Air National Guard Base (8.7 miles)

  • Lowest 8 February, 2026

    1.4 °F

  • Average February

    25.6 °F

  • Highest 11 February, 2026

    41 °F

Climate (2021–Present)

Otis Air National Guard Base (8.7 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.2 °F
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