Watertown Weather Forecast

    • 65
    • 82

    Decreasing Clouds

    • 70
    • 91

    Partly Sunny

    • 68
    • 89

    Chance Thunderstorms

    • 65
    • 85

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

    • 69
    • 89

    Slight Chance Rain Showers

Today 8 Jul Southeast Middlesex

Partly sunny. Warmer with Highs in the lower 80s. Northeast Winds around 5 Mph.

Tonight 8 Jul Southeast Middlesex

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 60s. South Winds around 5 Mph, becoming southwest after midnight.

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Watertown Temperature Statistics

July Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 5 July, 2026

    66.9 °F

  • Average July

    82.3 °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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