Belmont Weather Forecast

    • 60
    • 80

    Mostly Cloudy

    • 69
    • 82

    Chance Rain Showers

    • 62
    • 89

    Chance Rain Showers

    • 52
    • 74

    Mostly Sunny

    • 58
    • 75

    Partly Sunny

    • 62
    • 79

    Slight Chance Rain Showers

Today 8 Sep Southeast Middlesex

Partly sunny. Highs in the upper 70s. Northwest Winds 5 to 10 Mph, becoming northeast this afternoon.

Tonight 8 Sep Southeast Middlesex

Mostly cloudy. Lows around 60. East Winds around 5 Mph.

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  • Temperature Real-Time

Belmont Temperature Statistics

September Temperature

Laurence G Hanscom Field Airport (7.5 miles)

  • Lowest 6 September, 2026

    53.1 °F

  • Average September

    66.1 °F

  • Highest 4 September, 2026

    84 °F

Climate (2021–2026)

Laurence G Hanscom Field Airport (7.5 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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