Popponesset Bay - Mashpee River Entrance Weather Forecast

    • 57
    • 72

    Partly Sunny

    • 59
    • 70

    Slight Chance Rain Showers

    • 61
    • 70

    Chance Rain Showers

    • 62
    • 74

    Slight Chance Rain Showers

    • 55
    • 75

    Mostly Sunny

    • 52
    • 64

    Mostly Sunny

Today 15 Sep Barnstable

Mostly sunny. Near steady temperature in the upper 60s. Northeast Winds 5 to 10 Mph.

Tonight 15 Sep Barnstable

Mostly cloudy in the Evening, then becoming partly cloudy. Patchy fog after midnight. Visibility one quarter mile or less at Times after midnight. Lows in the upper 50s. East Winds 5 to 10 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 13 September, 2025

    44.6 °F

  • Average September

    63.9 °F

  • Highest 6 September, 2025

    82.4 °F

Climate (2020–Present)

Otis Air National Guard Base (4.3 miles)

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  • Average Low 2020–2025

    44 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    59.4 °F
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