Chatham Weather Forecast

    • 68
    • 72

    Decreasing Clouds

    • 68
    • 75

    Mostly Cloudy

    • 69
    • 74

    Chance Rain Showers

    • 68
    • 75

    Chance Rain Showers

    • 68
    • 78

    Slight Chance Rain Showers

    • 69
    • 78

    Partly Sunny

Today 31 Jul Barnstable

Mostly sunny. Highs in the mid 70s. Northwest Winds around 5 Mph.

Tonight 31 Jul Barnstable

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Humid with Lows in the mid 60s. Southwest Winds around 5 Mph.

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Chatham Temperature Statistics

July Temperature

Chatham, Chatham Municipal Airport (1.2 miles)

  • Lowest 20 July, 2026

    57.9 °F

  • Average July

    71.5 °F

  • Highest 3 July, 2026

    91 °F

Climate (2021–2026)

Chatham, Chatham Municipal Airport (1.2 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    59.7 °F
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