Watertown Weather Forecast

    • 70
    • 90

    Chance Rain Showers

    • 64
    • 87

    Mostly Sunny

    • 66
    • 87

    Chance Rain Showers

    • 61
    • 86

    Chance Rain Showers

    • 59
    • 81

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

Today 10 Aug Southeast Middlesex

Mostly sunny. Hot with Highs around 90. Northeast Winds around 5 Mph, becoming south around 5 Mph this afternoon.

Tonight 10 Aug Southeast Middlesex

Mostly cloudy with a chance of Showers in the Evening, then mostly clear after midnight. Humid with Lows around 70. Southwest Winds 5 to 10 Mph. Chance of rain 30 percent.

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Watertown Temperature Statistics

August Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 4 August, 2026

    60.1 °F

  • Average August

    76.6 °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

    41.3 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    61.7 °F
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