Dorchester Weather Forecast

    • 30
    • 58

    Mostly Cloudy

    • 16
    • 33

    Snow

    • 15
    • 33

    Sunny

    • 21
    • 43

    Mostly Sunny

    • 28
    • 48

    Partly Sunny

    • 35
    • 52

    Mostly Cloudy

Today 30 Jan Dorchester

Mostly sunny. Highs in the upper 50s. East Winds around 5 Mph, becoming southeast in the afternoon.

Tonight 30 Jan Dorchester

Mostly cloudy. Lows around 30. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dorchester Temperature Statistics

January Temperature

Summerville Airport (8.1 miles)

  • Lowest 16 January, 2026

    19.4 °F

  • Average January

    48 °F

  • Highest 10 January, 2026

    80.6 °F

Climate (2021–Present)

Summerville Airport (8.1 miles)

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  • Average Low 2021–2026

    56.2 °F

  • Average 2021–2026

    65.7 °F

  • Average High 2021–2026

    76.8 °F
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