Grass Bay Weather Forecast

    • 62
    • 73

    Partly Sunny

    • 64
    • 72

    Chance Rain Showers

    • 64
    • 75

    Rain Showers Likely

    • 57
    • 73

    Chance Thunderstorms

    • 56
    • 68

    Partly Sunny

    • 62
    • 73

    Chance Rain Showers

Today 16 Jun Jefferson

Partly sunny through early Afternoon, then a chance of Showers late. Highs Ranging from the lower 70s on the tug hill to the upper 70s across the lower Elevations. Light south Winds. Chance of rain 30 percent.

Tonight 16 Jun Jefferson

Partly cloudy. Lows in the lower 60s. Light south Winds.

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Grass Bay Temperature Statistics

June Temperature

Watertown, Watertown International Airport (16.8 miles)

  • Lowest 3 June, 2025

    43.6 °F

  • Average June

    64.1 °F

  • Highest 4 June, 2025

    88.6 °F

Climate (2020–Present)

Watertown, Watertown International Airport (16.8 miles)

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  • Average Low 2020–2025

    39 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    57.7 °F
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