Somerville Weather Forecast

    • 69
    • 86

    Smoke

    • 60
    • 79

    Mostly Sunny

    • 64
    • 80

    Mostly Sunny

    • 69
    • 84

    Rain Showers

    • 68
    • 84

    Rain Showers Likely

    • 65
    • 82

    Slight Chance Thunderstorms

Today 18 Jul Southeast Middlesex

Mostly cloudy. Smoke. A chance of Showers with isolated Thunderstorms. Highs in the mid 80s. Southwest Winds 15 to 20 Mph. Gusts up to 25 Mph, increasing to 35 Mph. Chance of rain 50 percent.

Tonight 18 Jul Southeast Middlesex

Cloudy. Showers likely with isolated Thunderstorms in the Evening, then a slight chance of Showers with isolated Thunderstorms after midnight. Smoke in the evening. Humid with Lows in the upper 60s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 60 percent.

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Somerville Temperature Statistics

July Temperature

Boston, Logan International Airport (4.3 miles)

  • Lowest 8 July, 2026

    61.6 °F

  • Average July

    78.6 °F

  • Highest 2 July, 2026

    101.6 °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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