Watertown Weather Forecast

    • 48
    • 64

    Mostly Cloudy

    • 48
    • 63

    Chance Rain

    • 52
    • 52

    Rain Showers

    • 55
    • 72

    Chance Rain Showers

    • 59
    • 81

    Partly Sunny

    • 55
    • 82

    Slight Chance Rain Showers

    • 52
    • 72

    Partly Sunny

Today 22 May Southeast Middlesex

Partly sunny. Near steady temperature in the lower 60s. East Winds 5 to 10 Mph.

Tonight 22 May Southeast Middlesex

Mostly cloudy. Lows in the upper 40s. Southeast Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Watertown Temperature Statistics

May Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 9 May, 2026

    34 °F

  • Average May

    58.5 °F

  • Highest 19 May, 2026

    95 °F

Climate (2021–Present)

Laurence G Hanscom Field Airport (8.7 miles)

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  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    61.6 °F
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