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Monthly climate in Rockport, Maine, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rockport features a humid continental climate (Dfb).Temperatures typically range between -2 °C (28 °F) and 18 °C (65 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 25 °C (78 °F).The average annual precipitation amounts to about 1441 mm (56.7 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually.Rockport enjoys an average of 2920 hours of sunshine throughout the year, and daylight varies from 8 hours 53 minutes to 15 hours 27 minutes per day.

Monthly average temperatures in Rockport, Maine, United States §

The warmest months in Rockport are July, August and September, with daily mean temperatures ranging from 16 to 18 °C (61 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -2 to 0 °C (28 - 33 °F) throughout the day. On average each year, Rockport experiences 0 days above 25 °C (77.0 °F) and 93 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, Maine, 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 10°C
(51°F)		 10°C
(50°F)		 10°C
(50°F)		 15°C
(59°F)		 19°C
(66°F)		 25°C
(77°F)		 25°C
(78°F)		 24°C
(76°F)		 23°C
(74°F)		 19°C
(66°F)		 16°C
(62°F)		 13°C
(55°F)
Mean maximum 9°C
(48°F)		 7°C
(45°F)		 8°C
(47°F)		 11°C
(53°F)		 17°C
(63°F)		 20°C
(68°F)		 23°C
(74°F)		 23°C
(74°F)		 21°C
(70°F)		 18°C
(65°F)		 15°C
(59°F)		 12°C
(53°F)
Average high 1°C
(34°F)		 1°C
(34°F)		 3°C
(37°F)		 7°C
(45°F)		 11°C
(52°F)		 16°C
(60°F)		 19°C
(66°F)		 20°C
(68°F)		 17°C
(63°F)		 14°C
(57°F)		 8°C
(47°F)		 3°C
(38°F)
Daily mean -2°C
(28°F)		 -2°C
(29°F)		 0°C
(33°F)		 5°C
(41°F)		 9°C
(49°F)		 14°C
(58°F)		 17°C
(63°F)		 18°C
(65°F)		 16°C
(61°F)		 12°C
(54°F)		 6°C
(42°F)		 0°C
(33°F)
Average low -5°C
(23°F)		 -5°C
(24°F)		 -2°C
(28°F)		 3°C
(38°F)		 8°C
(47°F)		 13°C
(55°F)		 16°C
(61°F)		 17°C
(63°F)		 15°C
(59°F)		 10°C
(51°F)		 3°C
(38°F)		 -2°C
(28°F)
Mean minimum -15°C
(5°F)		 -14°C
(7°F)		 -12°C
(10°F)		 -2°C
(29°F)		 4°C
(40°F)		 9°C
(48°F)		 13°C
(56°F)		 14°C
(58°F)		 11°C
(51°F)		 5°C
(41°F)		 -6°C
(22°F)		 -12°C
(11°F)
Minimum -18°C
(0°F)		 -16°C
(4°F)		 -15°C
(5°F)		 -3°C
(26°F)		 2°C
(36°F)		 8°C
(46°F)		 12°C
(54°F)		 13°C
(56°F)		 9°C
(48°F)		 1°C
(34°F)		 -12°C
(11°F)		 -18°C
(-0°F)

Compare climate in Rockport with other places

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

Monthly average precipitation in Rockport, Maine, United States §

Rockport usually has the most precipitation in April, October and December, with an average of 13 rainy days and 166 mm (6.5 inches) of precipitation per month.The driest months in Rockport are March, June and August. On average, 89 mm (3.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rockport, Maine, 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) 112 (4.4) 108 (4.2) 89 (3.5) 169 (6.7) 114 (4.5) 87 (3.4) 100 (3.9) 90 (3.5) 99 (3.9) 169 (6.6) 145 (5.7) 160 (6.3)
Average precipitation days (≥ 1 mm) 9 10 10 14 12 9 11 9 8 13 12 12

Monthly sunshine hours in Rockport, Maine, United States §

The sunniest months in Rockport are June, July and August, when the sun shines an average of 10 hours 30 minutes a day.Least sunny months in Rockport: January, November and December receive an average of 5 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rockport, Maine, 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 145 187 255 237 285 319 319 327 281 211 179 172
Mean daily daylight hours 9h 16m 10h 27m 11h 57m 13h 29m 14h 48m 15h 27m 15h 5m 13h 55m 12h 27m 10h 55m 9h 35m 8h 53m

Solar UV radiation in Rockport, Maine, United States §

Rockport experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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, Maine, 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 8 7 5 3 2