Monomoscoy Island Weather Forecast

    • 53
    • 74

    Increasing Clouds

    • 45
    • 63

    Partly Sunny

    • 58
    • 66

    Rain Showers Likely

    • 56
    • 66

    Chance Rain Showers

    • 55
    • 63

    Chance Rain Showers

    • 55
    • 63

    Chance Rain Showers

Today 18 Sep Barnstable

Partly sunny this Morning, then clearing. Near steady temperature around 70. Northwest Winds 5 to 10 Mph, becoming north this afternoon. Gusts up to 20 Mph.

Tonight 18 Sep Barnstable

Partly cloudy. Cooler. Less humid with Lows in the upper 50s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monomoscoy Island Temperature Statistics

September Temperature

Otis Air National Guard Base (5.6 miles)

  • Lowest 16 September, 2026

    46.4 °F

  • Average September

    66 °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

    43.6 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    59.1 °F
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