Watertown Weather Forecast

    • 63
    • 83

    Increasing Clouds

    • 68
    • 82

    Rain Showers

    • 63
    • 86

    Rain Showers

    • 61
    • 81

    Slight Chance Rain Showers

    • 64
    • 83

    Mostly Sunny

    • 65
    • 86

    Partly Sunny

Today 20 Jul Southeast Middlesex

Sunny. Highs in the mid 80s. West Winds around 5 Mph.

Tonight 20 Jul Southeast Middlesex

Partly cloudy. Lows in the lower 60s. Southwest Winds around 5 Mph.

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Watertown Temperature Statistics

July Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 16 July, 2026

    55.9 °F

  • Average July

    75.9 °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

    51.7 °F

  • Average High 2021–2026

    61.7 °F
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