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Monthly climate in Mandan, North Dakota, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Mandan features a humid continental climate (Dfb). Temperatures typically range between -10 °C (14 °F) and 23 °C (74 °F) through the year, but rarely can drop to -35 °C (-30 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 469 mm (18.4 inches) and receives 71 rainy days on the 1 mm (0.04 inches) threshold annually. Mandan enjoys an average of 3156 hours of sunshine throughout the year, and daylight varies from 8 hours 35 minutes to 15 hours 47 minutes per day.

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

The warmest months in Mandan are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (69 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -10 to -6 °C (14 - 22 °F) throughout the day. On average each year, Mandan experiences 72 days above 25 °C (77.0 °F) and 161 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Mandan, 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 10°C
(51°F)		 12°C
(54°F)		 19°C
(66°F)		 25°C
(78°F)		 32°C
(90°F)		 38°C
(100°F)		 38°C
(100°F)		 37°C
(100°F)		 35°C
(96°F)		 31°C
(88°F)		 24°C
(75°F)		 16°C
(61°F)
Mean maximum 7°C
(45°F)		 9°C
(48°F)		 15°C
(60°F)		 23°C
(73°F)		 29°C
(84°F)		 32°C
(89°F)		 35°C
(95°F)		 35°C
(96°F)		 32°C
(90°F)		 25°C
(78°F)		 17°C
(63°F)		 11°C
(52°F)
Average high -5°C
(24°F)		 -5°C
(23°F)		 4°C
(40°F)		 10°C
(51°F)		 19°C
(67°F)		 27°C
(81°F)		 29°C
(85°F)		 27°C
(82°F)		 22°C
(72°F)		 12°C
(54°F)		 5°C
(40°F)		 -1°C
(30°F)
Daily mean -9°C
(16°F)		 -10°C
(14°F)		 -1°C
(30°F)		 4°C
(40°F)		 13°C
(56°F)		 20°C
(69°F)		 23°C
(74°F)		 21°C
(70°F)		 16°C
(61°F)		 6°C
(44°F)		 -1°C
(31°F)		 -6°C
(22°F)
Average low -14°C
(8°F)		 -15°C
(5°F)		 -6°C
(21°F)		 -1°C
(30°F)		 7°C
(44°F)		 14°C
(57°F)		 17°C
(62°F)		 14°C
(58°F)		 10°C
(50°F)		 2°C
(35°F)		 -5°C
(23°F)		 -10°C
(15°F)
Mean minimum -29°C
(-20°F)		 -27°C
(-17°F)		 -20°C
(-3°F)		 -11°C
(12°F)		 -1°C
(30°F)		 7°C
(45°F)		 12°C
(54°F)		 8°C
(46°F)		 2°C
(36°F)		 -8°C
(17°F)		 -15°C
(5°F)		 -25°C
(-14°F)
Minimum -33°C
(-27°F)		 -35°C
(-30°F)		 -27°C
(-17°F)		 -18°C
(0°F)		 -3°C
(26°F)		 4°C
(40°F)		 10°C
(49°F)		 7°C
(44°F)		 -2°C
(29°F)		 -13°C
(10°F)		 -18°C
(1°F)		 -31°C
(-24°F)

Compare climate in Mandan with other places

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

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

Mandan usually has the most precipitation in June, July and August, with an average of 8 rainy days and 62 mm (2.4 inches) of precipitation per month. The driest months in Mandan are January, February and November. On average, 15 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Mandan, 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) 27 (1.1) 52 (2.0) 63 (2.5) 62 (2.4) 60 (2.4) 56 (2.2) 56 (2.2) 16 (0.6) 22 (0.9)
Average precipitation days (≥ 1 mm) 3 5 5 6 6 8 9 8 6 6 5 4

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

The sunniest months in Mandan are June, July and August, when the sun shines an average of 11 hours 57 minutes a day. Least sunny months in Mandan: January, November and December receive an average of 5 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Mandan, 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 151 211 242 262 320 377 383 339 271 219 193 181
Mean daily daylight hours 9h 0m 10h 18m 11h 57m 13h 37m 15h 3m 15h 47m 15h 23m 14h 6m 12h 29m 10h 49m 9h 20m 8h 35m

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

Mandan experiences the highest level of ultraviolet (UV) radiation in April, 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 Mandan UV Index data.

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

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

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