Grindstone Weather Forecast

    • 70
    • 84

    Chance Thunderstorms

    • 70
    • 84

    Slight Chance Thunderstorms

    • 67
    • 82

    Partly Sunny

    • 65
    • 81

    Chance Thunderstorms

    • 65
    • 79

    Slight Chance Thunderstorms

    • 64
    • 78

    Chance Rain Showers

Today 1 Jul Jefferson

Mostly sunny. Very warm with Highs Ranging from the lower 80s along the lake Ontario shore to the upper 80s inland. Southwest Winds 10 to 15 Mph. Heat index Values up to 100.

Tonight 1 Jul Jefferson

Partly cloudy. A chance of Showers and Thunderstorms late this evening. A chance of Showers late. Very warm with Lows in the lower 70s. Southwest Winds 5 to 10 Mph, becoming light. Chance of rain 30 percent.

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Grindstone Temperature Statistics

July Temperature

Watertown, Watertown International Airport (20.5 miles)

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Climate (2021–2026)

Watertown, Watertown International Airport (20.5 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.5 °F
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