Onset Island Weather Forecast

    • 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 22 Feb Southern Plymouth

Partly sunny in the Morning, then cloudy with a slight chance of snow in the afternoon. Highs in the upper 30s. Northeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon. Chance of snow 20 percent.

Tonight 22 Feb Southern Plymouth

Snow likely in the Evening, then snow after midnight. Areas of freezing fog and fog after midnight. Snow may be heavy at Times after midnight with visibility one quarter mile or less at Times. Snow accumulation of 4 to 8 Inches. Blustery. Near steady temperature in the lower 30s. Northeast Winds 15 to 25 Mph. Gusts up to 35 Mph, increasing to 50 Mph after midnight. Chance of precipitation near 100 percent.

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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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