Grindstone Weather Forecast

    • 43
    • 56

    Rain Showers Likely

    • 46
    • 55

    Mostly Cloudy

    • 47
    • 61

    Mostly Cloudy

    • 49
    • 64

    Partly Sunny

    • 49
    • 67

    Partly Sunny

    • 56
    • 72

    Chance Rain Showers

Today 13 May Jefferson

Showers late this Morning, then Showers with a chance of Thunderstorms this afternoon. Breezy with Highs Ranging from the mid 50s on the tug hill to the lower 60s across the lower Elevations. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 13 May Jefferson

Mostly cloudy. Showers likely with a chance of Thunderstorms in the evening. Lows in the lower 40s. South Winds 5 to 10 Mph, becoming light. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grindstone Temperature Statistics

May Temperature

Watertown, Watertown International Airport (20.5 miles)

  • Lowest 1 May, 2026

    29.6 °F

  • Average May

    47.6 °F

  • Highest 4 May, 2026

    70.6 °F

Climate (2021–Present)

Watertown, Watertown International Airport (20.5 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    57.6 °F
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