Belmont Weather Forecast

    • 19
    • 37

    Decreasing Clouds

    • 11
    • 25

    Mostly Sunny

    • 26
    • 34

    Chance Snow

    • 34
    • 44

    Rain Likely

    • 25
    • 40

    Partly Sunny

    • 20
    • 35

    Chance Snow

    • 18
    • 31

    Chance Snow

Today 7 Dec Southeast Middlesex

Mostly cloudy. Near steady temperature in the mid 30s. Southwest Winds around 5 Mph.

Tonight 7 Dec Southeast Middlesex

Mostly cloudy this Evening, then clearing. Lows around 19. Southwest Winds around 5 Mph, becoming west with Gusts up to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Belmont Temperature Statistics

December Temperature

Laurence G Hanscom Field Airport (7.5 miles)

  • Lowest 5 December, 2025

    8.1 °F

  • Average December

    28.2 °F

  • Highest 1 December, 2025

    42.1 °F

Climate (2020–Present)

Laurence G Hanscom Field Airport (7.5 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    61.9 °F
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