Watertown Weather Forecast

    • 59
    • 66

    Becoming Sunny

    • 52
    • 71

    Increasing Clouds

    • 55
    • 74

    Mostly Cloudy

    • 49
    • 75

    Partly Sunny

    • 52
    • 72

    Mostly Sunny

    • 57
    • 76

    Partly Sunny

    • 61
    • 79

    Rain Showers Likely

Today 21 May Jefferson

Sunny. Highs Ranging from the lower 60s along the lake Ontario shore to the lower 70s inland. Light Winds, becoming west 10 to 15 Mph.

Tonight 21 May Jefferson

Mostly cloudy. Showers likely with a chance of Thunderstorms overnight. Lows around 50. Southwest Winds 10 Mph or less. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Watertown Temperature Statistics

May Temperature

Watertown, Watertown International Airport (5.6 miles)

  • Lowest 12 May, 2018

    32 °F
  • Average May

    57.7 °F
  • Highest 9 May, 2018

    81 °F

Climate (2010–Present)

Watertown, Watertown International Airport (5.6 miles)

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  • Average Low 2010–Present

    35.8 °F
  • Average 2010–Present

    46 °F
  • Average High 2010–Present

    54 °F
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