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Monthly climate in Garrison, North Dakota, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Garrison features a humid continental climate (Dfb).Temperatures typically range between -12 °C (10 °F) and 22 °C (72 °F) through the year, but rarely can drop to -36 °C (-33 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 455 mm (17.9 inches) and receives 73 rainy days on the 1 mm (0.04 inches) threshold annually.Garrison enjoys an average of 3096 hours of sunshine throughout the year, and daylight varies from 8 hours 28 minutes to 15 hours 54 minutes per day.

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

The warmest months in Garrison are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (67 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -12 to -7 °C (10 - 20 °F) throughout the day. On average each year, Garrison experiences 62 days above 25 °C (77.0 °F) and 166 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Garrison, 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
(62°F)		 25°C
(77°F)		 31°C
(88°F)		 39°C
(102°F)		 37°C
(98°F)		 38°C
(100°F)		 35°C
(95°F)		 31°C
(88°F)		 22°C
(72°F)		 12°C
(54°F)
Mean maximum 4°C
(40°F)		 5°C
(42°F)		 13°C
(55°F)		 21°C
(71°F)		 28°C
(84°F)		 31°C
(88°F)		 33°C
(92°F)		 35°C
(95°F)		 31°C
(88°F)		 24°C
(76°F)		 14°C
(58°F)		 8°C
(47°F)
Average high -7°C
(20°F)		 -7°C
(19°F)		 2°C
(37°F)		 9°C
(48°F)		 19°C
(66°F)		 26°C
(78°F)		 28°C
(82°F)		 26°C
(80°F)		 21°C
(70°F)		 11°C
(52°F)		 3°C
(37°F)		 -3°C
(27°F)
Daily mean -11°C
(12°F)		 -12°C
(10°F)		 -3°C
(28°F)		 3°C
(38°F)		 12°C
(54°F)		 19°C
(67°F)		 22°C
(72°F)		 20°C
(68°F)		 15°C
(59°F)		 6°C
(43°F)		 -2°C
(29°F)		 -7°C
(20°F)
Average low -15°C
(5°F)		 -17°C
(2°F)		 -7°C
(19°F)		 -2°C
(28°F)		 6°C
(43°F)		 13°C
(56°F)		 16°C
(61°F)		 14°C
(57°F)		 9°C
(49°F)		 1°C
(35°F)		 -6°C
(22°F)		 -11°C
(12°F)
Mean minimum -30°C
(-23°F)		 -30°C
(-22°F)		 -21°C
(-6°F)		 -13°C
(10°F)		 -2°C
(29°F)		 7°C
(45°F)		 11°C
(52°F)		 9°C
(48°F)		 2°C
(37°F)		 -7°C
(19°F)		 -15°C
(5°F)		 -27°C
(-17°F)
Minimum -35°C
(-30°F)		 -34°C
(-30°F)		 -27°C
(-16°F)		 -22°C
(-8°F)		 -6°C
(22°F)		 5°C
(41°F)		 10°C
(50°F)		 8°C
(46°F)		 -1°C
(30°F)		 -10°C
(14°F)		 -17°C
(1°F)		 -36°C
(-33°F)

Compare climate in Garrison with other places

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

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

Garrison usually has the most precipitation in June, July and September, with an average of 7 rainy days and 66 mm (2.6 inches) of precipitation per month.The driest months in Garrison are January, February and November. On average, 17 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Garrison, 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) 13 (0.5) 16 (0.6) 26 (1.0) 26 (1.0) 39 (1.5) 66 (2.6) 63 (2.5) 57 (2.2) 68 (2.7) 40 (1.6) 21 (0.8) 21 (0.8)
Average precipitation days (≥ 1 mm) 4 4 5 6 7 9 7 8 6 6 6 5

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

The sunniest months in Garrison are June, July and August, when the sun shines an average of 11 hours 46 minutes a day.Least sunny months in Garrison: January, November and December receive an average of 5 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Garrison, 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 148 206 246 259 325 372 378 332 264 211 180 170
Mean daily daylight hours 8h 54m 10h 15m 11h 57m 13h 40m 15h 9m 15h 54m 15h 29m 14h 9m 12h 30m 10h 47m 9h 15m 8h 28m

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

Garrison 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 / 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 Garrison UV Index data.

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