Watertown Weather Forecast

    • 41
    • 60

    Increasing Clouds

    • 44
    • 63

    Mostly Cloudy

    • 41
    • 55

    Partly Sunny

    • 42
    • 62

    Mostly Sunny

    • 37
    • 57

    Mostly Sunny

    • 38
    • 57

    Mostly Sunny

Today 19 Oct Southeast Middlesex

Sunny. Highs in the upper 50s. Northwest Winds around 5 Mph, becoming east this afternoon.

Tonight 19 Oct Southeast Middlesex

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 40s. North Winds around 5 Mph.

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Watertown Temperature Statistics

October Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 7 October, 2026

    32 °F

  • Average October

    56.1 °F

  • Highest 2 October, 2026

    82.9 °F

Climate (2021–2026)

Laurence G Hanscom Field Airport (8.7 miles)

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  • Average Low 2021–2026

    41.1 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    61.6 °F
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