Somerville Weather Forecast

    • 65
    • 86

    Mostly Sunny

    • 67
    • 84

    Chance Rain Showers

    • 62
    • 82

    Rain Showers Likely

    • 58
    • 79

    Mostly Sunny

    • 57
    • 76

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

Today 23 Aug Southeast Middlesex

Sunny. Highs in the mid 80s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 23 Aug Southeast Middlesex

Mostly clear. Lows in the mid 60s. South Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Somerville Temperature Statistics

August Temperature

Boston, Logan International Airport (4.3 miles)

  • Lowest 20 August, 2025

    57 °F

  • Average August

    71.7 °F

  • Highest 17 August, 2025

    92.6 °F

Climate (2020–Present)

Boston, Logan International Airport (4.3 miles)

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  • Average Low 2020–2025

    46.9 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    61.1 °F
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