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Monthly climate in Rockport, Massachusetts, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rockport features a humid continental climate (Dfb).Temperatures typically range between 1 °C (34 °F) and 21 °C (70 °F) through the year, but rarely can drop to -16 °C (4 °F) or can rise to as high as 27 °C (81 °F).The average annual precipitation amounts to about 1285 mm (50.6 inches) and receives 120 rainy days on the 1 mm (0.04 inches) threshold annually.Rockport enjoys an average of 3032 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 Rockport, Massachusetts, United States §

The warmest months in Rockport are July, August and September, with daily mean temperatures ranging from 18 to 21 °C (65 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 1 to 3 °C (34 - 37 °F) throughout the day. On average each year, Rockport experiences 2 days above 25 °C (77.0 °F) and 57 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rockport, 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 14°C
(58°F)		 11°C
(53°F)		 13°C
(56°F)		 17°C
(63°F)		 20°C
(69°F)		 23°C
(73°F)		 27°C
(81°F)		 27°C
(81°F)		 25°C
(77°F)		 21°C
(69°F)		 18°C
(65°F)		 14°C
(58°F)
Mean maximum 11°C
(52°F)		 10°C
(50°F)		 11°C
(52°F)		 13°C
(56°F)		 19°C
(66°F)		 21°C
(70°F)		 25°C
(77°F)		 25°C
(78°F)		 23°C
(74°F)		 20°C
(68°F)		 16°C
(62°F)		 13°C
(56°F)
Average high 4°C
(39°F)		 4°C
(39°F)		 5°C
(41°F)		 8°C
(47°F)		 12°C
(55°F)		 17°C
(63°F)		 21°C
(70°F)		 22°C
(72°F)		 19°C
(67°F)		 15°C
(60°F)		 10°C
(50°F)		 5°C
(42°F)
Daily mean 1°C
(34°F)		 1°C
(35°F)		 3°C
(37°F)		 7°C
(44°F)		 11°C
(52°F)		 16°C
(61°F)		 20°C
(68°F)		 21°C
(70°F)		 18°C
(65°F)		 14°C
(57°F)		 8°C
(46°F)		 3°C
(38°F)
Average low -2°C
(29°F)		 -1°C
(30°F)		 1°C
(33°F)		 5°C
(41°F)		 10°C
(50°F)		 15°C
(59°F)		 19°C
(67°F)		 20°C
(68°F)		 17°C
(63°F)		 12°C
(55°F)		 5°C
(42°F)		 1°C
(34°F)
Mean minimum -12°C
(11°F)		 -10°C
(13°F)		 -9°C
(17°F)		 1°C
(34°F)		 6°C
(42°F)		 10°C
(51°F)		 17°C
(62°F)		 17°C
(63°F)		 13°C
(56°F)		 7°C
(44°F)		 -3°C
(27°F)		 -8°C
(19°F)
Minimum -16°C
(4°F)		 -13°C
(9°F)		 -11°C
(12°F)		 -1°C
(31°F)		 3°C
(39°F)		 9°C
(49°F)		 15°C
(59°F)		 16°C
(61°F)		 12°C
(54°F)		 3°C
(38°F)		 -9°C
(16°F)		 -14°C
(7°F)

Compare climate in Rockport with other places

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

Monthly average precipitation in Rockport, Massachusetts, United States §

Rockport usually has the most precipitation in April, October and December, with an average of 12 rainy days and 152 mm (6.0 inches) of precipitation per month.The driest months in Rockport are June, August and September. On average, 74 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rockport, 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) 89 (3.5) 109 (4.3) 106 (4.2) 156 (6.1) 92 (3.6) 83 (3.3) 97 (3.8) 54 (2.1) 86 (3.4) 161 (6.3) 112 (4.4) 140 (5.5)
Average precipitation days (≥ 1 mm) 9 11 10 13 10 9 10 7 7 13 11 10

Monthly sunshine hours in Rockport, Massachusetts, United States §

The sunniest months in Rockport are June, July and August, when the sun shines an average of 10 hours 58 minutes a day.Least sunny months in Rockport: January, February and December receive an average of 5 hours 34 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rockport, 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 148 186 256 246 302 333 341 335 281 228 198 172
Mean daily daylight hours 9h 26m 10h 33m 11h 57m 13h 24m 14h 38m 15h 14m 14h 55m 13h 49m 12h 26m 10h 59m 9h 44m 9h 5m

Solar UV radiation in Rockport, Massachusetts, United States §

Rockport 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 Rockport UV Index data.

Average daily maximum UV levels by month for Rockport, 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) 2 4 5 7 9 10 9 9 7 6 3 2