Grindstone Weather Forecast

    • 69
    • 79

    Chance Rain Showers

    • 68
    • 79

    Rain Showers Likely

    • 65
    • 77

    Chance Thunderstorms

    • 65
    • 77

    Chance Rain Showers

    • 64
    • 77

    Chance Rain Showers

    • 62
    • 76

    Chance Rain Showers

Today 6 Aug Jefferson

Partly sunny. A chance of Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Humid with Highs Ranging from the upper 70s on the tug hill to the lower 80s across the lower Elevations. South Winds 5 to 10 Mph, becoming southwest. Chance of rain 50 percent.

Tonight 6 Aug Jefferson

Partly cloudy. Muggy with Lows Ranging from the mid 60s across the tug hill to the upper 60s along the lake Ontario shore. Light Winds.

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Grindstone Temperature Statistics

August Temperature

Watertown, Watertown International Airport (20.5 miles)

  • Lowest 1 August, 2026

    59.6 °F

  • Average August

    72.6 °F

  • Highest 1 August, 2026

    85.6 °F

Climate (2021–2026)

Watertown, Watertown International Airport (20.5 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    57.6 °F
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