Clayton Weather Forecast

    • 71
    • 91

    Chance Rain Showers

    • 65
    • 84

    Rain Showers Likely

    • 58
    • 83

    Mostly Sunny

    • 61
    • 84

    Sunny

    • 67
    • 87

    Partly Sunny

    • 59
    • 83

    Chance Rain Showers

    • 55
    • 75

    Partly Sunny

Today 12 Aug Jefferson

Sunny and hot with Highs Ranging from the mid 80s along the lake Ontario shore to the lower 90s inland. Southwest Winds 5 to 10 Mph.

Tonight 12 Aug Jefferson

Partly to mostly cloudy. A chance of Showers and Thunderstorms late. Very warm with Lows Ranging from the upper 60s on the tug hill to the lower 70s across the lower Elevations. Light south Winds. Chance of rain 30 percent.

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Clayton Temperature Statistics

August Temperature

Watertown, Watertown International Airport (16.8 miles)

  • Lowest 2 August, 2025

    43.6 °F

  • Average August

    71.1 °F

  • Highest 6 August, 2025

    89.7 °F

Climate (2020–Present)

Watertown, Watertown International Airport (16.8 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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