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Monthly climate in New Portland, Maine, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification New Portland features a humid continental climate (Dfb).Temperatures typically range between -8 °C (17 °F) and 20 °C (68 °F) through the year, but rarely can drop to -32 °C (-25 °F) or can rise to as high as 35 °C (96 °F).The average annual precipitation amounts to about 1186 mm (46.7 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually.New Portland enjoys an average of 2812 hours of sunshine throughout the year, and daylight varies from 8 hours 48 minutes to 15 hours 32 minutes per day.

Monthly average temperatures in New Portland, Maine, United States §

The warmest months in New Portland are June, July and August, with daily mean temperatures ranging from 17 to 20 °C (63 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -6 °C (17 - 22 °F) throughout the day. On average each year, New Portland experiences 40 days above 25 °C (77.0 °F) and 153 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in New Portland, 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 11°C
(52°F)		 11°C
(52°F)		 17°C
(63°F)		 22°C
(72°F)		 32°C
(90°F)		 34°C
(93°F)		 35°C
(96°F)		 32°C
(90°F)		 32°C
(89°F)		 25°C
(77°F)		 23°C
(73°F)		 14°C
(57°F)
Mean maximum 7°C
(45°F)		 9°C
(48°F)		 11°C
(52°F)		 18°C
(65°F)		 29°C
(84°F)		 30°C
(86°F)		 31°C
(88°F)		 31°C
(88°F)		 28°C
(82°F)		 23°C
(73°F)		 17°C
(62°F)		 10°C
(51°F)
Average high -4°C
(25°F)		 -2°C
(28°F)		 2°C
(36°F)		 9°C
(48°F)		 17°C
(63°F)		 23°C
(73°F)		 25°C
(77°F)		 24°C
(76°F)		 21°C
(69°F)		 13°C
(56°F)		 5°C
(41°F)		 -1°C
(30°F)
Daily mean -8°C
(17°F)		 -7°C
(20°F)		 -3°C
(27°F)		 4°C
(40°F)		 11°C
(53°F)		 17°C
(63°F)		 20°C
(68°F)		 19°C
(66°F)		 15°C
(59°F)		 8°C
(47°F)		 0°C
(33°F)		 -6°C
(22°F)
Average low -13°C
(9°F)		 -12°C
(11°F)		 -7°C
(19°F)		 -0°C
(32°F)		 5°C
(42°F)		 10°C
(51°F)		 14°C
(58°F)		 14°C
(57°F)		 10°C
(49°F)		 4°C
(39°F)		 -4°C
(25°F)		 -10°C
(14°F)
Mean minimum -24°C
(-11°F)		 -23°C
(-9°F)		 -20°C
(-4°F)		 -9°C
(17°F)		 -1°C
(30°F)		 5°C
(40°F)		 8°C
(47°F)		 8°C
(46°F)		 2°C
(35°F)		 -3°C
(27°F)		 -14°C
(8°F)		 -21°C
(-6°F)
Minimum -32°C
(-25°F)		 -27°C
(-15°F)		 -24°C
(-10°F)		 -16°C
(4°F)		 -3°C
(28°F)		 0°C
(33°F)		 6°C
(43°F)		 6°C
(43°F)		 -2°C
(28°F)		 -6°C
(21°F)		 -19°C
(-1°F)		 -27°C
(-16°F)

Compare climate in New Portland with other places

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

Monthly average precipitation in New Portland, Maine, United States §

New Portland usually has the most precipitation in April, October and December, with an average of 11 rainy days and 124 mm (4.9 inches) of precipitation per month.The driest months in New Portland are February, March and September. On average, 76 mm (3.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in New Portland, 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) 87 (3.4) 83 (3.3) 74 (2.9) 125 (4.9) 93 (3.7) 92 (3.6) 114 (4.5) 87 (3.4) 72 (2.8) 131 (5.2) 111 (4.4) 118 (4.6)
Average precipitation days (≥ 1 mm) 8 10 9 13 11 11 13 12 9 10 12 10

Monthly sunshine hours in New Portland, Maine, United States §

The sunniest months in New Portland are June, July and August, when the sun shines an average of 10 hours 29 minutes a day.Least sunny months in New Portland: January, November and December receive an average of 4 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in New Portland, 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 130 174 244 217 280 321 320 322 282 191 165 159
Mean daily daylight hours 9h 11m 10h 25m 11h 57m 13h 31m 14h 52m 15h 32m 15h 10m 13h 58m 12h 28m 10h 54m 9h 31m 8h 48m

Solar UV radiation in New Portland, Maine, United States §

New Portland 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 New Portland UV Index data.

Average daily maximum UV levels by month for New Portland, 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 8 9 10 9 8 7 5 3 2