Climate almanac

South Boston

Massachusetts, US · 42.33°, -71.05°

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What is the climate like in South Boston?

South Boston is warmest in July, when daily highs average 81°F (27°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically December and the driest is August; the year sees roughly 46 in of precipitation.

  • Warmest monthJuly — average high 81°F (27°C)
  • Coolest monthJanuary — average low 27°F (-3°C)
  • Wettest monthDecember (4.8 in)
  • Driest monthAugust (2.9 in)
  • Annual precipitation46 in