Watertown Weather Forecast

    • 39
    • 49

    Chance Rain Showers

    • 37
    • 46

    Rain

    • 28
    • 42

    Rain Likely

    • 29
    • 37

    Partly Sunny

    • 33
    • 44

    Mostly Cloudy

    • 32
    • 46

    Mostly Cloudy

Today 9 Jan Southeast Middlesex

Partly sunny in the Morning, then mostly cloudy with a slight chance of rain Showers in the afternoon. Patchy fog and freezing fog in the morning. Highs in the upper 40s. South Winds around 5 Mph, increasing to around 10 Mph with Gusts up to 20 Mph in the afternoon. Chance of precipitation 20 percent.

Tonight 9 Jan Southeast Middlesex

Mostly cloudy. Patchy freezing fog. Near steady temperature in the upper 20s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Watertown Temperature Statistics

January Temperature

Laurence G Hanscom Field Airport (8.7 miles)

  • Lowest 5 January, 2026

    10 °F

  • Average January

    22.9 °F

  • Highest 6 January, 2026

    30.9 °F

Climate (2021–Present)

Laurence G Hanscom Field Airport (8.7 miles)

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  • Average Low 2021–2026

    41.5 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    61.8 °F
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