Watertown Weather Forecast

    • 29
    • 45

    Rain Likely

    • 21
    • 36

    Mostly Sunny

    • 21
    • 33

    Mostly Sunny

    • 24
    • 36

    Chance Snow

    • 16
    • 33

    Chance Snow

    • 16
    • 27

    Partly Sunny

Today 10 Dec Southeast Middlesex

Cloudy with a 20 percent chance of rain. Not as cool. Near steady temperature in the mid 40s. South Winds 15 to 20 Mph.

Tonight 10 Dec Southeast Middlesex

Mostly cloudy. Rain Likely, mainly in the evening. Lows in the upper 20s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Watertown Temperature Statistics

December Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 5 December, 2025

    8.1 °F

  • Average December

    27.8 °F

  • Highest 1 December, 2025

    42.1 °F

Climate (2020–Present)

Laurence G Hanscom Field Airport (8.7 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    61.9 °F
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