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Monthly climate in Portland, North Dakota, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Portland features a humid continental climate (Dfb). Temperatures typically range between -13 °C (9 °F) and 22 °C (72 °F) through the year, but rarely can drop to -38 °C (-36 °F) or can rise to as high as 40 °C (104 °F). The average annual precipitation amounts to about 601 mm (23.7 inches) and receives 83 rainy days on the 1 mm (0.04 inches) threshold annually. Portland enjoys an average of 2984 hours of sunshine throughout the year, and daylight varies from 8 hours 29 minutes to 15 hours 53 minutes per day.

Monthly average temperatures in Portland, North Dakota, United States §

The warmest months in Portland are June, July and August, with daily mean temperatures ranging from 20 to 22 °C (68 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -13 to -8 °C (9 - 18 °F) throughout the day. On average each year, Portland experiences 63 days above 25 °C (77.0 °F) and 164 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Portland, North Dakota, 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 4°C
(39°F)		 11°C
(52°F)		 22°C
(72°F)		 24°C
(75°F)		 34°C
(94°F)		 40°C
(104°F)		 36°C
(96°F)		 35°C
(95°F)		 32°C
(90°F)		 28°C
(83°F)		 23°C
(74°F)		 10°C
(50°F)
Mean maximum 3°C
(37°F)		 4°C
(40°F)		 13°C
(55°F)		 22°C
(71°F)		 30°C
(85°F)		 32°C
(90°F)		 33°C
(91°F)		 32°C
(91°F)		 31°C
(88°F)		 24°C
(75°F)		 13°C
(55°F)		 7°C
(45°F)
Average high -8°C
(18°F)		 -8°C
(18°F)		 2°C
(36°F)		 9°C
(49°F)		 19°C
(67°F)		 26°C
(80°F)		 28°C
(83°F)		 26°C
(79°F)		 21°C
(70°F)		 11°C
(52°F)		 2°C
(35°F)		 -4°C
(25°F)
Daily mean -12°C
(10°F)		 -13°C
(9°F)		 -3°C
(27°F)		 4°C
(39°F)		 13°C
(56°F)		 20°C
(69°F)		 22°C
(72°F)		 20°C
(68°F)		 15°C
(60°F)		 6°C
(44°F)		 -2°C
(28°F)		 -8°C
(18°F)
Average low -17°C
(2°F)		 -18°C
(0°F)		 -8°C
(19°F)		 -1°C
(30°F)		 7°C
(45°F)		 14°C
(58°F)		 17°C
(62°F)		 14°C
(58°F)		 10°C
(51°F)		 2°C
(36°F)		 -7°C
(20°F)		 -12°C
(10°F)
Mean minimum -33°C
(-26°F)		 -31°C
(-23°F)		 -21°C
(-6°F)		 -10°C
(14°F)		 -1°C
(30°F)		 8°C
(46°F)		 11°C
(51°F)		 8°C
(47°F)		 2°C
(36°F)		 -8°C
(17°F)		 -17°C
(1°F)		 -28°C
(-18°F)
Minimum -38°C
(-36°F)		 -35°C
(-31°F)		 -27°C
(-16°F)		 -16°C
(4°F)		 -5°C
(24°F)		 6°C
(43°F)		 9°C
(48°F)		 7°C
(45°F)		 -2°C
(28°F)		 -13°C
(8°F)		 -21°C
(-5°F)		 -33°C
(-27°F)

Compare climate in Portland with other places

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

Monthly average precipitation in Portland, North Dakota, United States §

Portland usually has the most precipitation in June, August and October, with an average of 9 rainy days and 84 mm (3.3 inches) of precipitation per month. The driest months in Portland are January, February and November. On average, 19 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Portland, North Dakota, 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) 18 (0.7) 19 (0.8) 27 (1.1) 41 (1.6) 55 (2.2) 91 (3.6) 62 (2.4) 81 (3.2) 68 (2.7) 79 (3.1) 21 (0.8) 39 (1.5)
Average precipitation days (≥ 1 mm) 3 5 5 6 9 9 8 10 7 9 4 8

Monthly sunshine hours in Portland, North Dakota, United States §

The sunniest months in Portland are June, July and August, when the sun shines an average of 11 hours 18 minutes a day. Least sunny months in Portland: January, November and December receive an average of 5 hours 11 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Portland, North Dakota, 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 142 207 245 255 302 352 368 319 254 199 170 164
Mean daily daylight hours 8h 55m 10h 16m 11h 57m 13h 40m 15h 8m 15h 53m 15h 28m 14h 9m 12h 29m 10h 47m 9h 16m 8h 29m

Solar UV radiation in Portland, North Dakota, United States §

Portland experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, 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 Portland UV Index data.

Average daily maximum UV levels by month for Portland, North Dakota, 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 8 9 9 8 7 4 3 2

Detailed Monthly Weather Insights for Portland, North Dakota, United States

Discover in-depth weather details for every month in Portland. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Portland's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.