Groton Weather Forecast

    • 66
    • 89

    Slight Chance Thunderstorms

    • 61
    • 88

    Chance Rain Showers

    • 41
    • 72

    Rain Showers Likely

    • 41
    • 58

    Partly Sunny

    • 47
    • 65

    Chance Rain Showers

    • 50
    • 66

    Chance Rain Showers

Today 18 May Tompkins

Mostly sunny. Highs around 90. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 18 May Tompkins

Mostly clear. Lows in the mid 60s. South Winds 5 to 10 Mph.

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Groton Temperature Statistics

May Temperature

Cortland County-Chase Field (7.5 miles)

  • Lowest 1 May, 2026

    28.4 °F

  • Average May

    46.8 °F

  • Highest 5 May, 2026

    71.6 °F

Climate (2021–Present)

Cortland County-Chase Field (7.5 miles)

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  • Average Low 2021–2026

    37.8 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    56.5 °F
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