Thatch Island Weather Forecast

    • 66
    • 73

    Chance Rain Showers

    • 53
    • 73

    Partly Sunny

    • 50
    • 63

    Partly Sunny

    • 58
    • 66

    Rain Showers Likely

    • 56
    • 65

    Slight Chance Rain Showers

    • 56
    • 64

    Partly Sunny

Today 17 Sep Barnstable

Mostly sunny. Highs in the mid 70s. Southwest Winds 5 to 10 Mph.

Tonight 17 Sep Barnstable

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Humid with Lows in the mid 60s. Southwest Winds 10 to 15 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thatch Island Temperature Statistics

September Temperature

Otis Air National Guard Base (5.6 miles)

  • Lowest 15 September, 2026

    48.2 °F

  • Average September

    66.3 °F

  • Highest 4 September, 2026

    80.6 °F

Climate (2021–2026)

Otis Air National Guard Base (5.6 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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