South Duxbury weather by month
What a typical year looks like in South Duxbury, Massachusetts: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Middleboro, 24 km from South Duxbury; records cover 1893–2026.
The year at a glance
- Precipitation a year
- 52.4 in1331 mm
- Snow a year
- 42 in105 cm
- Last spring freeze
- Apr 23
- First fall freeze
- Oct 18
- Heating degree days
- 6,190
- Cooling degree days
- 559
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 2°−17° (heating, 99%) and 92°33° (cooling, 1%).
Month by month
South Duxbury in January
Highs average 38°3° and lows 17°−8°, with 4.4 in113 mm of precipitation and 14 in34 cm of snow in a typical January.
- Record high
- 68°20° (2020)
- Record low
- −26°−32° (1904)
- Heating degree days
- 1161
- Cooling degree days
- 0
South Duxbury in February
Highs average 40°4° and lows 19°−7°, with 3.8 in96 mm of precipitation and 14 in35 cm of snow in a typical February.
- Record high
- 70°21° (2017)
- Record low
- −20°−29° (1907)
- Heating degree days
- 997
- Cooling degree days
- 0
South Duxbury in March
Highs average 46°8° and lows 26°−3°, with 5.8 in147 mm of precipitation and 7 in17 cm of snow in a typical March.
- Record high
- 80°27° (2012)
- Record low
- −3°−19° (2015)
- Heating degree days
- 901
- Cooling degree days
- 0
South Duxbury in April
Highs average 57°14° and lows 36°2°, with 4.8 in123 mm of precipitation and 1.3 in3.3 cm of snow in a typical April.
- Record high
- 88°31° (2010)
- Record low
- 13°−11° (1908)
- Heating degree days
- 563
- Cooling degree days
- 2
South Duxbury in May
Highs average 67°19° and lows 46°8°, with 3.6 in91 mm of precipitation in a typical May.
- Record high
- 93°34° (2010)
- Record low
- 22°−6° (1903)
- Heating degree days
- 281
- Cooling degree days
- 13
South Duxbury in June
Highs average 76°25° and lows 55°13°, with 4.1 in103 mm of precipitation in a typical June.
- Record high
- 99°37° (2025)
- Record low
- 32°0° (1908)
- Heating degree days
- 66
- Cooling degree days
- 88
South Duxbury in July
Highs average 82°28° and lows 61°16°, with 3.3 in85 mm of precipitation in a typical July.
- Record high
- 99°37° (1911)
- Record low
- 40°4° (1912)
- Heating degree days
- 8
- Cooling degree days
- 214
South Duxbury in August
Highs average 81°27° and lows 60°15°, with 3.8 in96 mm of precipitation in a typical August.
- Record high
- 97°36° (2022)
- Record low
- 35°2° (1912)
- Heating degree days
- 13
- Cooling degree days
- 178
South Duxbury in September
Highs average 74°23° and lows 52°11°, with 4.2 in106 mm of precipitation in a typical September.
- Record high
- 96°36° (2013)
- Record low
- 25°−4° (1904)
- Heating degree days
- 127
- Cooling degree days
- 59
South Duxbury in OctoberThis month
Highs average 63°17° and lows 41°5°, with 5 in126 mm of precipitation and 0.1 in0.3 cm of snow in a typical October.
- Record high
- 86°30° (1897)
- Record low
- 8°−13° (1895)
- Heating degree days
- 411
- Cooling degree days
- 5
South Duxbury in November
Highs average 52°11° and lows 32°0°, with 4.4 in113 mm of precipitation and 0.4 in1 cm of snow in a typical November.
- Record high
- 80°27° (2022)
- Record low
- 1°−17° (1897)
- Heating degree days
- 689
- Cooling degree days
- 0
South Duxbury in December
Highs average 43°6° and lows 24°−4°, with 5.3 in134 mm of precipitation and 6 in14 cm of snow in a typical December.
- Record high
- 67°19° (2015)
- Record low
- −11°−24° (1910)
- Heating degree days
- 973
- Cooling degree days
- 0