Somerville Weather Forecast

    • 62
    • 74

    Slight Chance Rain Showers

    • 64
    • 73

    Rain Showers

    • 53
    • 74

    Slight Chance Rain Showers

    • 55
    • 69

    Mostly Sunny

    • 61
    • 77

    Partly Sunny

    • 63
    • 80

    Slight Chance Rain Showers

    • 58
    • 77

    Slight Chance Rain Showers

Today 12 Sep Southeast Middlesex

Sunny. Near steady temperature in the lower 70s. Southeast Winds 5 to 10 Mph.

Tonight 12 Sep Southeast Middlesex

Partly cloudy this Evening, then becoming mostly cloudy. Not as cool with Lows in the lower 60s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Somerville Temperature Statistics

September Temperature

Boston, Logan International Airport (4.3 miles)

  • Lowest 6 September, 2026

    59.6 °F

  • Average September

    70.4 °F

  • Highest 10 September, 2026

    86 °F

Climate (2021–2026)

Boston, Logan International Airport (4.3 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
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