Somerville Weather Forecast

    • 54
    • 62

    Rain Showers

    • 51
    • 66

    Mostly Cloudy

    • 50
    • 61

    Mostly Cloudy

    • 50
    • 63

    Slight Chance Rain Showers

    • 50
    • 62

    Chance Rain Showers

    • 51
    • 62

    Chance Rain Showers

Today 20 Sep Southeast Middlesex

A slight chance of Showers in the Morning, then Showers in the afternoon. Patchy fog in the afternoon. Highs in the lower 60s. Southeast Winds 5 to 10 Mph. Chance of rain near 100 percent.

Tonight 20 Sep Southeast Middlesex

Showers. Patchy fog. Lows in the lower 50s. East Winds 5 to 10 Mph, becoming north after midnight. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Somerville Temperature Statistics

September Temperature

Boston, Logan International Airport (4.3 miles)

  • Lowest 15 September, 2026

    53.7 °F

  • Average September

    69.1 °F

  • Highest 10 September, 2026

    87.7 °F

Climate (2021–2026)

Boston, Logan International Airport (4.3 miles)

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  • Average Low 2021–2026

    46.6 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    61 °F
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