Monomoscoy Island Weather Forecast

    • 47
    • 65

    Chance Rain Showers

    • 51
    • 65

    Partly Sunny

    • 51
    • 65

    Rain Showers Likely

    • 53
    • 64

    Rain Showers Likely

    • 55
    • 68

    Chance Rain Showers

    • 56
    • 72

    Partly Sunny

Today 21 May Barnstable

Mostly cloudy with a 20 percent chance of Showers. Cooler with Highs in the mid 60s. Temperature falling into the upper 50s this afternoon. Northeast Winds 5 to 10 Mph.

Tonight 21 May Barnstable

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the upper 40s. Southeast Winds around 5 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Monomoscoy Island Temperature Statistics

May Temperature

Otis Air National Guard Base (5.6 miles)

  • Lowest 3 May, 2026

    39.2 °F

  • Average May

    55 °F

  • Highest 17 May, 2026

    78.8 °F

Climate (2021–Present)

Otis Air National Guard Base (5.6 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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