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Monthly climate in Stanley, North Dakota, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Stanley features a humid continental climate (Dfb). Temperatures typically range between -13 °C (9 °F) and 21 °C (70 °F) through the year, but rarely can drop to -37 °C (-34 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 449 mm (17.7 inches) and receives 71 rainy days on the 1 mm (0.04 inches) threshold annually. Stanley enjoys an average of 3126 hours of sunshine throughout the year, and daylight varies from 8 hours 23 minutes to 16 hours 0 minutes per day.

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

The warmest months in Stanley are June, July and August, with daily mean temperatures ranging from 19 to 21 °C (66 - 70 °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 - 19 °F) throughout the day. On average each year, Stanley experiences 57 days above 25 °C (77.0 °F) and 170 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Stanley, 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 7°C
(45°F)		 9°C
(49°F)		 17°C
(63°F)		 26°C
(79°F)		 31°C
(88°F)		 36°C
(98°F)		 36°C
(97°F)		 37°C
(99°F)		 32°C
(91°F)		 31°C
(89°F)		 21°C
(70°F)		 10°C
(51°F)
Mean maximum 4°C
(40°F)		 5°C
(42°F)		 13°C
(56°F)		 21°C
(71°F)		 28°C
(83°F)		 30°C
(86°F)		 33°C
(92°F)		 34°C
(94°F)		 30°C
(86°F)		 24°C
(76°F)		 14°C
(58°F)		 8°C
(46°F)
Average high -7°C
(20°F)		 -8°C
(18°F)		 2°C
(36°F)		 8°C
(47°F)		 18°C
(65°F)		 25°C
(77°F)		 27°C
(81°F)		 26°C
(79°F)		 20°C
(69°F)		 11°C
(51°F)		 2°C
(36°F)		 -3°C
(26°F)
Daily mean -11°C
(12°F)		 -13°C
(9°F)		 -3°C
(27°F)		 3°C
(37°F)		 12°C
(54°F)		 19°C
(66°F)		 21°C
(70°F)		 19°C
(67°F)		 14°C
(58°F)		 5°C
(41°F)		 -2°C
(28°F)		 -8°C
(19°F)
Average low -16°C
(4°F)		 -18°C
(1°F)		 -8°C
(19°F)		 -3°C
(27°F)		 5°C
(42°F)		 12°C
(54°F)		 15°C
(59°F)		 13°C
(55°F)		 8°C
(47°F)		 0°C
(33°F)		 -6°C
(21°F)		 -12°C
(11°F)
Mean minimum -32°C
(-25°F)		 -31°C
(-24°F)		 -21°C
(-6°F)		 -14°C
(7°F)		 -3°C
(27°F)		 6°C
(43°F)		 10°C
(50°F)		 7°C
(45°F)		 1°C
(34°F)		 -9°C
(17°F)		 -16°C
(3°F)		 -28°C
(-19°F)
Minimum -36°C
(-32°F)		 -37°C
(-34°F)		 -27°C
(-17°F)		 -25°C
(-12°F)		 -10°C
(15°F)		 4°C
(39°F)		 8°C
(47°F)		 6°C
(44°F)		 -3°C
(27°F)		 -13°C
(8°F)		 -18°C
(0°F)		 -36°C
(-33°F)

Compare climate in Stanley with other places

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

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

Stanley usually has the most precipitation in June, July and September, with an average of 8 rainy days and 67 mm (2.6 inches) of precipitation per month. The driest months in Stanley are January, February and December. On average, 16 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Stanley, 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) 12 (0.5) 16 (0.6) 26 (1.0) 25 (1.0) 41 (1.6) 72 (2.8) 63 (2.5) 56 (2.2) 65 (2.6) 33 (1.3) 21 (0.8) 19 (0.7)
Average precipitation days (≥ 1 mm) 3 3 5 4 7 10 7 7 7 7 6 5

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

The sunniest months in Stanley are May, June and July, when the sun shines an average of 11 hours 55 minutes a day. Least sunny months in Stanley: January, November and December receive an average of 5 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Stanley, 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 145 204 251 274 336 374 386 336 259 213 173 169
Mean daily daylight hours 8h 50m 10h 13m 11h 56m 13h 43m 15h 14m 16h 0m 15h 34m 14h 12m 12h 30m 10h 45m 9h 11m 8h 23m

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

Stanley experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 9 - 9, which corresponds to the Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Stanley UV Index data.

Average daily maximum UV levels by month for Stanley, 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 4 9 8 9 9 8 7 5 2 2

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

Discover in-depth weather details for every month in Stanley. 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 Stanley'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.