Katama County Beach Weather Forecast

    • 59
    • 67

    Mostly Cloudy

    • 57
    • 66

    Breezy

    • 56
    • 65

    Breezy

    • 55
    • 63

    Chance Rain Showers

    • 55
    • 66

    Rain Showers Likely

    • 56
    • 67

    Rain Showers Likely

    • 55
    • 67

    Chance Rain Showers

Today 21 Sep Dukes

Mostly cloudy. A 30 percent chance of Showers. Breezy. Lows in the mid 50s. Highs in the mid 60s.

Tonight 21 Sep Dukes

Mostly cloudy. Near steady temperature around 60. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Katama County Beach Temperature Statistics

September Temperature

Marthas Vineyard Airport (6.8 miles)

  • Lowest 7 September, 2026

    52 °F

  • Average September

    67.6 °F

  • Highest 4 September, 2026

    81 °F

Climate (2021–2026)

Marthas Vineyard Airport (6.8 miles)

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  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    60.5 °F
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