Watertown Weather Forecast

    • 54
    • 65

    Rain Likely

    • 55
    • 61

    Rain

    • 56
    • 62

    Rain Showers

    • 56
    • 63

    Rain Showers Likely

    • 54
    • 67

    Partly Sunny

    • 57
    • 71

    Partly Sunny

Today 25 Sep Southeast Middlesex

Partly sunny in the Morning, then cloudy with a chance of rain in the afternoon. Breezy with Highs in the upper 60s. Northeast Winds 15 to 25 Mph with Gusts up to 40 Mph. Chance of rain 30 percent.

Tonight 25 Sep Southeast Middlesex

Cloudy. A chance of rain in the Evening, then rain likely after midnight. Windy with Lows in the mid 50s. North Winds 20 to 30 Mph with Gusts up to 55 Mph. Chance of rain 60 percent.

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Watertown Temperature Statistics

September Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 15 September, 2026

    41 °F

  • Average September

    64.1 °F

  • Highest 4 September, 2026

    84 °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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