Groton Weather Forecast

    • 53
    • 78

    Increasing Clouds

    • 51
    • 75

    Mostly Cloudy

    • 54
    • 79

    Mostly Sunny

    • 41
    • 70

    Mostly Sunny

    • 49
    • 71

    Partly Sunny

    • 53
    • 75

    Partly Sunny

Today 16 Sep Tompkins

Mostly sunny. Highs in the upper 70s. Southeast Winds around 5 Mph, becoming northeast this afternoon.

Tonight 16 Sep Tompkins

Partly cloudy. Lows in the mid 50s. Southeast Winds around 5 Mph.

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Groton Temperature Statistics

September Temperature

Cortland County-Chase Field (7.5 miles)

  • Lowest 8 September, 2025

    37.4 °F

  • Average September

    57.4 °F

  • Highest 4 September, 2025

    77 °F

Climate (2020–Present)

Cortland County-Chase Field (7.5 miles)

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  • Average Low 2020–2025

    38 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    56.6 °F
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