South Monomoy Island Weather Forecast

    • 42
    • 56

    Breezy

    • 57
    • 59

    Mostly Sunny

    • 59
    • 61

    Chance Rain Showers

    • 60
    • 62

    Rain Showers Likely

    • 60
    • 63

    Chance Rain Showers

    • 59
    • 63

    Chance Rain Showers

Today 9 Oct Barnstable

Sunny, cooler with Highs in the upper 50s. North Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 9 Oct Barnstable

Mostly clear. Cooler with Lows in the upper 30s. North Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening.

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South Monomoy Island Temperature Statistics

October Temperature

Chatham, Chatham Municipal Airport (6.8 miles)

  • Lowest 3 October, 2025

    42.1 °F

  • Average October

    60.3 °F

  • Highest 5 October, 2025

    77 °F

Climate (2020–Present)

Chatham, Chatham Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    47.7 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    60.1 °F
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