Dorchester Weather Forecast

    • 64
    • 87

    Partly Sunny

    • 64
    • 86

    Rain Showers Likely

    • 59
    • 81

    Chance Thunderstorms

    • 58
    • 81

    Chance Rain Showers

    • 59
    • 84

    Chance Rain Showers

    • 61
    • 85

    Slight Chance Rain Showers

Today 2 May Dorchester

Mostly sunny. A slight chance of Showers in the afternoon. Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 2 May Dorchester

Mostly clear with a slight chance of Showers in the Evening, then partly cloudy after midnight. Lows in the mid 60s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dorchester Temperature Statistics

May Temperature

Summerville Airport (8.1 miles)

  • Lowest

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  • Average May

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Climate (2020–Present)

Summerville Airport (8.1 miles)

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  • Average Low 2020–2025

    56.3 °F

  • Average 2020–2025

    65.8 °F

  • Average High 2020–2025

    76.7 °F
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