Cape Cod Airport Weather Forecast

    • 61
    • 73

    Increasing Clouds

    • 64
    • 74

    Rain Showers

    • 58
    • 73

    Chance Rain Showers

    • 57
    • 67

    Mostly Sunny

    • 61
    • 72

    Partly Sunny

    • 61
    • 74

    Partly Sunny

Today 12 Sep Barnstable

Sunny. Highs in the lower 70s. East Winds around 5 Mph, becoming south with Gusts up to 20 Mph in the afternoon.

Tonight 12 Sep Barnstable

Clear. Lows in the mid 50s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cape Cod Airport Temperature Statistics

September Temperature

Otis Air National Guard Base (6.2 miles)

  • Lowest 6 September, 2026

    55.4 °F

  • Average September

    66.6 °F

  • Highest 4 September, 2026

    80.6 °F

Climate (2021–2026)

Otis Air National Guard Base (6.2 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    59.1 °F
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