Cape Cod National Seashore Weather Forecast

    • 58
    • 63

    Rain

    • 56
    • 61

    Chance Rain

    • 54
    • 67

    Mostly Cloudy

    • 55
    • 66

    Mostly Cloudy

    • 55
    • 67

    Chance Rain Showers

    • 55
    • 67

    Rain Showers Likely

    • 55
    • 67

    Chance Rain Showers

Today 20 Sep Barnstable

Rain. Patchy fog. Near steady temperature in the lower 60s. Southeast Winds around 10 Mph. Chance of rain near 100 percent.

Tonight 20 Sep Barnstable

Rain. Patchy fog. Not as cool. Near steady temperature in the lower 60s. Southeast Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cape Cod National Seashore Temperature Statistics

September Temperature

Provincetown Municipal Airport (11.2 miles)

  • Lowest 15 September, 2026

    48.9 °F

  • Average September

    67.1 °F

  • Highest 10 September, 2026

    82.9 °F

Climate (2021–2026)

Provincetown Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.4 °F
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