Dorchester Weather Forecast

    • 74
    • 96

    Thunderstorms Likely

    • 74
    • 90

    Thunderstorms Likely

    • 74
    • 90

    Thunderstorms Likely

    • 75
    • 94

    Chance Thunderstorms

    • 77
    • 97

    Chance Thunderstorms

    • 76
    • 98

    Chance Thunderstorms

    • 75
    • 96

    Chance Thunderstorms

Today 22 Jul Dorchester

Partly sunny with a chance of Showers and Thunderstorms. Highs in the mid 90s. Heat index Values up to 110. Temperature falling into the upper 80s late. East Winds around 5 Mph. Chance of rain 50 percent.

Tonight 22 Jul Dorchester

Mostly cloudy with a chance of Showers and Thunderstorms this Evening, then partly cloudy after midnight. Lows in the mid 70s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dorchester Temperature Statistics

July Temperature

Summerville Airport (8.1 miles)

  • Lowest 11 July, 2025

    71.6 °F

  • Average July

    81.7 °F

  • Highest 7 July, 2025

    96.8 °F

Climate (2020–Present)

Summerville Airport (8.1 miles)

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  • Average Low 2020–2025

    56.5 °F

  • Average 2020–2025

    65.9 °F

  • Average High 2020–2025

    76.9 °F
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