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Monthly climate in Chilmark, Massachusetts, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Chilmark features a humid subtropical climate (Cfa).Temperatures typically range between 3 °C (37 °F) and 22 °C (72 °F) through the year, but rarely can drop to -13 °C (8 °F) or can rise to as high as 26 °C (78 °F).The average annual precipitation amounts to about 1350 mm (53.1 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually.Chilmark enjoys an average of 3011 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Chilmark, Massachusetts, United States §

The warmest months in Chilmark are July, August and September, with daily mean temperatures ranging from 19 to 22 °C (67 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 3 to 4 °C (37 - 39 °F) throughout the day. On average each year, Chilmark experiences 0 days above 25 °C (77.0 °F) and 35 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Chilmark, Massachusetts, 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 13°C
(56°F)		 12°C
(54°F)		 12°C
(54°F)		 15°C
(58°F)		 19°C
(66°F)		 22°C
(72°F)		 26°C
(78°F)		 25°C
(78°F)		 24°C
(75°F)		 22°C
(72°F)		 19°C
(67°F)		 16°C
(62°F)
Mean maximum 12°C
(53°F)		 11°C
(51°F)		 10°C
(51°F)		 13°C
(55°F)		 17°C
(62°F)		 21°C
(69°F)		 24°C
(76°F)		 24°C
(76°F)		 23°C
(73°F)		 21°C
(70°F)		 18°C
(64°F)		 15°C
(59°F)
Average high 5°C
(41°F)		 5°C
(41°F)		 6°C
(42°F)		 9°C
(48°F)		 13°C
(55°F)		 17°C
(64°F)		 22°C
(71°F)		 23°C
(73°F)		 20°C
(69°F)		 17°C
(63°F)		 12°C
(55°F)		 8°C
(46°F)
Daily mean 3°C
(37°F)		 3°C
(37°F)		 4°C
(39°F)		 7°C
(46°F)		 11°C
(53°F)		 16°C
(62°F)		 21°C
(70°F)		 22°C
(72°F)		 19°C
(67°F)		 16°C
(61°F)		 10°C
(50°F)		 5°C
(42°F)
Average low 0°C
(33°F)		 1°C
(34°F)		 2°C
(36°F)		 6°C
(43°F)		 10°C
(51°F)		 16°C
(60°F)		 20°C
(69°F)		 21°C
(70°F)		 18°C
(65°F)		 14°C
(58°F)		 8°C
(47°F)		 3°C
(38°F)
Mean minimum -10°C
(14°F)		 -8°C
(18°F)		 -6°C
(22°F)		 2°C
(36°F)		 7°C
(44°F)		 12°C
(53°F)		 17°C
(64°F)		 18°C
(64°F)		 15°C
(59°F)		 8°C
(47°F)		 -1°C
(31°F)		 -4°C
(25°F)
Minimum -13°C
(8°F)		 -10°C
(14°F)		 -8°C
(18°F)		 1°C
(34°F)		 4°C
(40°F)		 11°C
(51°F)		 16°C
(61°F)		 17°C
(62°F)		 14°C
(57°F)		 5°C
(40°F)		 -5°C
(24°F)		 -10°C
(14°F)

Compare climate in Chilmark with other places

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

Monthly average precipitation in Chilmark, Massachusetts, United States §

Chilmark usually has the most precipitation in April, October and December, with an average of 12 rainy days and 143 mm (5.6 inches) of precipitation per month.The driest months in Chilmark are June, July and August. On average, 84 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Chilmark, Massachusetts, 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) 95 (3.7) 118 (4.6) 117 (4.6) 128 (5.0) 123 (4.8) 88 (3.4) 75 (3.0) 90 (3.6) 111 (4.4) 170 (6.7) 105 (4.1) 130 (5.1)
Average precipitation days (≥ 1 mm) 9 12 10 12 13 10 8 9 10 13 10 12

Monthly sunshine hours in Chilmark, Massachusetts, United States §

The sunniest months in Chilmark are June, July and August, when the sun shines an average of 10 hours 52 minutes a day.Least sunny months in Chilmark: January, February and December receive an average of 5 hours 22 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Chilmark, Massachusetts, 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 142 181 259 245 298 322 349 328 279 235 203 165
Mean daily daylight hours 9h 33m 10h 37m 11h 58m 13h 21m 14h 31m 15h 6m 14h 47m 13h 44m 12h 25m 11h 2m 9h 50m 9h 13m

Solar UV radiation in Chilmark, Massachusetts, United States §

Chilmark experiences the highest level of ultraviolet (UV) radiation in June, July 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 4. For more detailed information, check out our hourly Chilmark UV Index data.

Average daily maximum UV levels by month for Chilmark, Massachusetts, 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 5 6 8 9 10 10 9 8 6 4 2