Watertown Weather Forecast

    • 68
    • 87

    Mostly Sunny

    • 63
    • 85

    Chance Rain Showers

    • 61
    • 81

    Partly Sunny

    • 63
    • 77

    Chance Rain Showers

    • 63
    • 80

    Chance Rain Showers

    • 61
    • 83

    Mostly Sunny

Today 19 Aug Southeast Middlesex

Sunny. Highs in the mid 80s. Southwest Winds 5 to 10 Mph.

Tonight 19 Aug Southeast Middlesex

Mostly clear. Lows in the upper 60s. Southwest Winds around 5 Mph.

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Watertown Temperature Statistics

August Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 16 August, 2026

    50 °F

  • Average August

    74.2 °F

  • Highest 7 August, 2026

    91 °F

Climate (2021–2026)

Laurence G Hanscom Field Airport (8.7 miles)

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  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    61.7 °F
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