Groton Weather Forecast

    • 60
    • 79

    Increasing Clouds

    • 63
    • 86

    Chance Thunderstorms

    • 39
    • 78

    Rain Showers Likely

    • 36
    • 56

    Mostly Sunny

    • 41
    • 63

    Chance Rain Showers

    • 42
    • 62

    Chance Rain Showers

Today 18 May Caledonia

Mostly cloudy late this Morning, then becoming partly sunny. A chance of Showers late this morning. Highs in the upper 70s. South Winds around 10 Mph. Chance of rain 40 percent.

Tonight 18 May Caledonia

Mostly clear until Midnight, then becoming partly cloudy. Lows in the upper 50s. South Winds around 10 Mph until Midnight, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Groton Temperature Statistics

May Temperature

Barre / Montpelier, Knapp State Airport (14.9 miles)

  • Lowest 9 May, 2026

    28.7 °F

  • Average May

    48.4 °F

  • Highest 5 May, 2026

    79.6 °F

Climate (2021–Present)

Barre / Montpelier, Knapp State Airport (14.9 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    46 °F

  • Average High 2021–2026

    55.6 °F
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