Watertown Weather Forecast

    • 64
    • 84

    Becoming Sunny

    • 66
    • 84

    Sunny

    • 70
    • 91

    Mostly Sunny

    • 79
    • 94

    Mostly Sunny

    • 72
    • 95

    Partly Sunny

    • 70
    • 92

    Partly Sunny

Today 11 Jul Southeast Middlesex

Mostly sunny. Highs in the mid 80s. Northeast Winds around 5 Mph, becoming east in the afternoon.

Tonight 11 Jul Southeast Middlesex

Mostly clear. Lows in the mid 60s. Southeast Winds around 5 Mph, becoming north after midnight.

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Watertown Temperature Statistics

July Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 8 July, 2026

    60.1 °F

  • Average July

    77.1 °F

  • Highest 2 July, 2026

    98.1 °F

Climate (2021–2026)

Laurence G Hanscom Field Airport (8.7 miles)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    61.7 °F
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