Portsmouth Colony Weather Forecast

    • 55
    • 68

    Becoming Sunny

    • 62
    • 80

    Chance Thunderstorms

    • 67
    • 80

    Chance Rain Showers

    • 69
    • 89

    Chance Rain Showers

    • 64
    • 87

    Rain Showers Likely

    • 54
    • 76

    Chance Rain Showers

Today 15 May Lake

Partly cloudy this Morning, then becoming mostly cloudy. Highs in the upper 60s. West Winds around 5 Mph.

Tonight 15 May Lake

Partly cloudy in the Evening, then clearing. Not as cool with Lows in the mid 50s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

Portsmouth Colony Temperature Statistics

May Temperature

Willoughby (13.7 miles)

  • Lowest 12 May, 2026

    32.7 °F

  • Average May

    51.3 °F

  • Highest 4 May, 2026

    74.1 °F

Climate (2021–Present)

Willoughby (13.7 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    59.3 °F
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