Cape Cod National Seashore Weather Forecast

    • 57
    • 73

    Partly Sunny

    • 58
    • 73

    Partly Sunny

    • 60
    • 74

    Mostly Cloudy

    • 62
    • 76

    Chance Rain Showers

    • 55
    • 77

    Mostly Sunny

    • 55
    • 70

    Mostly Sunny

Today 15 Sep Barnstable

Mostly sunny. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 15 Sep Barnstable

Partly cloudy. Near steady temperature around 60. Northwest Winds around 5 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Cape Cod National Seashore Temperature Statistics

September Temperature

Provincetown Municipal Airport (11.2 miles)

  • Lowest 1 September, 2025

    50 °F

  • Average September

    64 °F

  • Highest 6 September, 2025

    78.1 °F

Climate (2020–Present)

Provincetown Municipal Airport (11.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    46.5 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    58.7 °F
Get WillyWeather+ to remove ads