Grindstone Weather Forecast

    • 52
    • 73

    Slight Chance Rain Showers

    • 44
    • 64

    Mostly Sunny

    • 48
    • 63

    Mostly Sunny

    • 61
    • 72

    Chance Rain Showers

    • 63
    • 71

    Chance Rain Showers

    • 59
    • 71

    Chance Rain Showers

    • 57
    • 71

    Slight Chance Rain Showers

Today 18 Sep Jefferson

Sunny. Highs Ranging from the lower 70s on the tug hill to the mid 70s across the lower Elevations. Southwest Winds 5 to 10 Mph, becoming west.

Tonight 18 Sep Jefferson

Partly to mostly cloudy with some patchy fog through the early overnight. Lows in the upper 40s. Light Winds, becoming north 5 to 10 Mph.

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  • Temperature Real-Time

Grindstone Temperature Statistics

September Temperature

Watertown, Watertown International Airport (20.5 miles)

  • Lowest 9 September, 2025

    39.9 °F

  • Average September

    61.3 °F

  • Highest 4 September, 2025

    80.1 °F

Climate (2020–Present)

Watertown, Watertown International Airport (20.5 miles)

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  • Average Low 2020–2025

    38.9 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    57.7 °F
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