Watertown Weather Forecast

    • 64
    • 79

    Chance Rain Showers

    • 62
    • 70

    Rain Showers

    • 62
    • 73

    Rain Showers

    • 65
    • 78

    Chance Thunderstorms

    • 62
    • 81

    Slight Chance Rain Showers

    • 57
    • 73

    Partly Sunny

    • 56
    • 72

    Partly Sunny

Today 31 Aug Southeast Middlesex

Mostly sunny. Near steady temperature in the upper 70s. East Winds 5 to 10 Mph.

Tonight 31 Aug Southeast Middlesex

Partly cloudy this Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Watertown Temperature Statistics

August Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 16 August, 2026

    50 °F

  • Average August

    72.6 °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

    41.2 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    61.7 °F
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