Watertown Weather Forecast

    • 27
    • 44

    Mostly Sunny

    • 39
    • 48

    Rain

    • 26
    • 59

    Rain

    • 31
    • 40

    Slight Chance Rain

    • 23
    • 46

    Slight Chance Rain

    • 21
    • 31

    Partly Sunny

    • 28
    • 38

    Chance Rain/Snow

Today 17 Dec Southeast Middlesex

Partly sunny and not as cool. Near steady temperature in the lower 40s. Southwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 17 Dec Southeast Middlesex

Mostly clear. Lows in the upper 20s. West Winds 5 to 10 Mph. Gusts up to 20 Mph this evening.

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Watertown Temperature Statistics

December Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 9 December, 2025

    3.9 °F

  • Average December

    27.4 °F

  • Highest 10 December, 2025

    46.9 °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

    51.8 °F

  • Average High 2020–2025

    61.9 °F
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