Watertown Weather Forecast

    • 71
    • 94

    Chance Rain Showers

    • 56
    • 91

    Rain Showers Likely

    • 49
    • 68

    Partly Sunny

    • 50
    • 68

    Chance Rain Showers

    • 48
    • 62

    Rain Showers Likely

    • 49
    • 62

    Chance Rain Showers

    • 52
    • 67

    Chance Rain

Today 19 May Southeast Middlesex

Partly sunny with a 20 percent chance of Showers. Much warmer. Near steady temperature in the lower 90s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 19 May Southeast Middlesex

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms this Evening, then mostly clear after midnight. Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph this evening. Chance of rain 30 percent.

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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

    55.8 °F

  • Highest 17 May, 2026

    87.1 °F

Climate (2021–Present)

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

    61.6 °F
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