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Monthly climate in Brattleboro, Vermont, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Brattleboro features a humid continental climate (Dfb).Temperatures typically range between -3 °C (26 °F) and 23 °C (73 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 1205 mm (47.4 inches) and receives 130 rainy days on the 1 mm (0.04 inches) threshold annually.Brattleboro enjoys an average of 2907 hours of sunshine throughout the year, and daylight varies from 9 hours 5 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Brattleboro, Vermont, United States §

The warmest months in Brattleboro are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (68 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to -1 °C (26 - 30 °F) throughout the day. On average each year, Brattleboro experiences 68 days above 25 °C (77.0 °F) and 116 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Brattleboro, Vermont, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 17°C
(63°F)		 23°C
(73°F)		 21°C
(71°F)		 28°C
(83°F)		 33°C
(92°F)		 35°C
(96°F)		 38°C
(101°F)		 34°C
(94°F)		 33°C
(91°F)		 27°C
(81°F)		 23°C
(75°F)		 16°C
(60°F)
Mean maximum 11°C
(53°F)		 16°C
(60°F)		 19°C
(66°F)		 22°C
(72°F)		 31°C
(88°F)		 33°C
(92°F)		 35°C
(95°F)		 33°C
(91°F)		 31°C
(87°F)		 25°C
(77°F)		 20°C
(68°F)		 14°C
(57°F)
Average high 1°C
(34°F)		 3°C
(37°F)		 6°C
(44°F)		 13°C
(55°F)		 20°C
(68°F)		 25°C
(78°F)		 28°C
(83°F)		 27°C
(81°F)		 23°C
(74°F)		 16°C
(62°F)		 8°C
(47°F)		 3°C
(37°F)
Daily mean -3°C
(26°F)		 -2°C
(29°F)		 1°C
(35°F)		 8°C
(46°F)		 14°C
(58°F)		 20°C
(68°F)		 23°C
(73°F)		 22°C
(71°F)		 18°C
(64°F)		 11°C
(53°F)		 4°C
(39°F)		 -1°C
(30°F)
Average low -8°C
(19°F)		 -7°C
(20°F)		 -3°C
(26°F)		 3°C
(38°F)		 9°C
(48°F)		 14°C
(57°F)		 17°C
(63°F)		 16°C
(62°F)		 12°C
(55°F)		 7°C
(45°F)		 -1°C
(31°F)		 -5°C
(23°F)
Mean minimum -20°C
(-4°F)		 -19°C
(-2°F)		 -15°C
(5°F)		 -4°C
(26°F)		 2°C
(36°F)		 9°C
(48°F)		 12°C
(54°F)		 9°C
(49°F)		 4°C
(39°F)		 -1°C
(30°F)		 -11°C
(13°F)		 -18°C
(0°F)
Minimum -25°C
(-13°F)		 -21°C
(-6°F)		 -19°C
(-1°F)		 -5°C
(23°F)		 0°C
(32°F)		 2°C
(36°F)		 10°C
(51°F)		 7°C
(44°F)		 -0°C
(32°F)		 -3°C
(26°F)		 -20°C
(-4°F)		 -23°C
(-9°F)

Compare climate in Brattleboro with other places

Compare temperature, precipitation, sunshine, UV index in Brattleboro, Vermont, United States with other places around the world.

Monthly average precipitation in Brattleboro, Vermont, United States §

Brattleboro usually has the most precipitation in April, July and October, with an average of 12 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in Brattleboro are January, March and June. On average, 76 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Brattleboro, Vermont, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 77 (3.0) 90 (3.5) 76 (3.0) 130 (5.1) 88 (3.5) 76 (3.0) 123 (4.9) 90 (3.6) 90 (3.5) 148 (5.8) 100 (3.9) 116 (4.6)
Average precipitation days (≥ 1 mm) 9 11 9 13 12 11 13 11 8 12 11 10

Monthly sunshine hours in Brattleboro, Vermont, United States §

The sunniest months in Brattleboro are June, July and August, when the sun shines an average of 10 hours 39 minutes a day.Least sunny months in Brattleboro: January, February and December receive an average of 5 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Brattleboro, Vermont, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 144 179 247 230 275 322 328 329 280 209 189 169
Mean daily daylight hours 9h 26m 10h 33m 11h 57m 13h 24m 14h 38m 15h 14m 14h 54m 13h 49m 12h 26m 10h 59m 9h 44m 9h 5m

Solar UV radiation in Brattleboro, Vermont, United States §

Brattleboro experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Brattleboro UV Index data.

Average daily maximum UV levels by month for Brattleboro, Vermont, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 4 6 8 9 10 9 9 7 6 3 2