Dorset weather by month
What a typical year looks like in Dorset, Vermont: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Peru, 16 km from Dorset; records cover 1964–2026.
The year at a glance
- Precipitation a year
- 51 in1295 mm
- Snow a year
- Rare
- Last spring freeze
- May 9
- First fall freeze
- Oct 10
- Heating degree days
- 8,315
- Cooling degree days
- 145
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −9°−23° (heating, 99%) and 84°29° (cooling, 1%).
Month by month
Dorset in January
Highs average 27°−3° and lows 8°−13°, with 3.9 in99 mm of precipitation in a typical January.
- Record high
- 58°14° (2020)
- Record low
- −18°−28° (2011)
- Heating degree days
- 1481
- Cooling degree days
- 0
Dorset in February
Highs average 31°−1° and lows 10°−12°, with 3.4 in86 mm of precipitation in a typical February.
- Record high
- 65°18° (2018)
- Record low
- −22°−30° (2016)
- Heating degree days
- 1247
- Cooling degree days
- 0
Dorset in March
Highs average 38°3° and lows 17°−8°, with 4.2 in105 mm of precipitation in a typical March.
- Record high
- 77°25° (2012)
- Record low
- −9°−23° (2014)
- Heating degree days
- 1159
- Cooling degree days
- 0
Dorset in April
Highs average 50°10° and lows 30°−1°, with 4 in101 mm of precipitation in a typical April.
- Record high
- 82°28° (2012)
- Record low
- 3°−16° (2016)
- Heating degree days
- 749
- Cooling degree days
- 0
Dorset in May
Highs average 64°18° and lows 42°6°, with 4.1 in103 mm of precipitation in a typical May.
- Record high
- 87°31° (2020)
- Record low
- 25°−4° (2020)
- Heating degree days
- 374
- Cooling degree days
- 4
Dorset in June
Highs average 70°21° and lows 51°11°, with 5 in127 mm of precipitation in a typical June.
- Record high
- 88°31° (2025)
- Record low
- 32°0° (2020)
- Heating degree days
- 160
- Cooling degree days
- 25
Dorset in July
Highs average 75°24° and lows 56°14°, with 4.5 in114 mm of precipitation in a typical July.
- Record high
- 89°32° (2018)
- Record low
- 44°7° (2018)
- Heating degree days
- 48
- Cooling degree days
- 64
Dorset in August
Highs average 73°23° and lows 55°13°, with 4.6 in118 mm of precipitation in a typical August.
- Record high
- 86°30° (2010)
- Record low
- 41°5° (2025)
- Heating degree days
- 78
- Cooling degree days
- 39
Dorset in September
Highs average 67°19° and lows 47°9°, with 4 in101 mm of precipitation in a typical September.
- Record high
- 88°31° (2010)
- Record low
- 30°−1° (2020)
- Heating degree days
- 247
- Cooling degree days
- 13
Dorset in OctoberThis month
Highs average 56°13° and lows 37°3°, with 5.2 in131 mm of precipitation in a typical October.
- Record high
- 83°28° (2023)
- Record low
- 16°−9° (2020)
- Heating degree days
- 579
- Cooling degree days
- 0
Dorset in November
Highs average 43°6° and lows 26°−3°, with 3.8 in95 mm of precipitation in a typical November.
- Record high
- 73°23° (2022)
- Record low
- −2°−19° (2018)
- Heating degree days
- 922
- Cooling degree days
- 0
Dorset in December
Highs average 32°0° and lows 16°−9°, with 4.5 in114 mm of precipitation in a typical December.
- Record high
- 64°18° (2015)
- Record low
- −15°−26° (2017)
- Heating degree days
- 1271
- Cooling degree days
- 0