Popponesset Bay - Mashpee River Entrance Weather Forecast

    • 57
    • 65

    Mostly Cloudy

    • 55
    • 64

    Mostly Cloudy

    • 55
    • 63

    Breezy

    • 55
    • 63

    Chance Rain Showers

    • 55
    • 63

    Rain Showers Likely

    • 56
    • 65

    Rain Showers Likely

Today 21 Sep Barnstable

Mostly cloudy. A slight chance of rain. Patchy fog. Near steady temperature in the mid 60s. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 21 Sep Barnstable

Mostly cloudy. Lows in the mid 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Popponesset Bay - Mashpee River Entrance Temperature Statistics

September Temperature

Otis Air National Guard Base (4.3 miles)

  • Lowest 16 September, 2026

    46.4 °F

  • Average September

    65.9 °F

  • Highest 4 September, 2026

    80.6 °F

Climate (2021–2026)

Otis Air National Guard Base (4.3 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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