Chatham Harbor Entrance Weather Forecast

    • 51
    • 61

    Rain Showers

    • 50
    • 58

    Partly Sunny

    • 53
    • 56

    Mostly Sunny

    • 54
    • 58

    Mostly Sunny

    • 57
    • 62

    Partly Sunny

    • 59
    • 65

    Partly Sunny

Today 31 May Barnstable

Sunny this Morning, then mostly cloudy with scattered Showers this afternoon. Not as cool with Highs in the mid 60s. Northwest Winds 5 to 10 Mph, becoming southwest 10 to 15 Mph this afternoon. Chance of rain 50 percent.

Tonight 31 May Barnstable

Mostly cloudy. Numerous Showers, mainly in the evening. Lows around 50. West Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chatham Harbor Entrance Temperature Statistics

May Temperature

Chatham, Chatham Municipal Airport (3.1 miles)

  • Lowest 8 May, 2026

    42.1 °F

  • Average May

    55.5 °F

  • Highest 20 May, 2026

    72 °F

Climate (2021–Present)

Chatham, Chatham Municipal Airport (3.1 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    59.8 °F
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