Allen Harbor Weather Forecast

    • 62
    • 83

    Rain Showers

    • 56
    • 75

    Mostly Sunny

    • 64
    • 70

    Chance Rain Showers

    • 65
    • 74

    Chance Rain Showers

    • 62
    • 73

    Partly Sunny

    • 65
    • 73

    Partly Sunny

Today 10 Sep Barnstable

Partly sunny. A slight chance of Showers in the morning. Breezy with Highs in the upper 70s. Southwest Winds 15 to 25 Mph. Gusts up to 45 Mph, decreasing to 35 Mph in the afternoon. Chance of rain 20 percent.

Tonight 10 Sep Barnstable

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 60s. West Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening.

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Allen Harbor Temperature Statistics

September Temperature

Chatham, Chatham Municipal Airport (5 miles)

  • Lowest 6 September, 2026

    55 °F

  • Average September

    65.8 °F

  • Highest 4 September, 2026

    78.1 °F

Climate (2021–2026)

Chatham, Chatham Municipal Airport (5 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    59.7 °F
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