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Monthly climate in Yellowknife, Canada

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Yellowknife features a subarctic climate (Dfc).Temperatures typically range between -25 °C (-13 °F) and 17 °C (62 °F) through the year, but rarely can drop to -48 °C (-54 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 318 mm (12.5 inches) and receives 68 rainy days on the 1 mm (0.04 inches) threshold annually.Yellowknife enjoys an average of 2634 hours of sunshine throughout the year, and daylight varies from 5 hours 6 minutes to 19 hours 46 minutes per day.

Monthly average temperatures in Yellowknife, Canada §

The warmest months in Yellowknife are June, July and August, with daily mean temperatures ranging from 13 to 17 °C (56 - 62 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -25 to -22 °C (-13 - -8 °F) throughout the day. On average each year, Yellowknife experiences 7 days above 25 °C (77.0 °F) and 208 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Yellowknife, Canada.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
(20°F)		 -1°C
(30°F)		 7°C
(44°F)		 13°C
(55°F)		 26°C
(79°F)		 28°C
(83°F)		 30°C
(86°F)		 32°C
(90°F)		 22°C
(71°F)		 12°C
(54°F)		 4°C
(40°F)		 1°C
(34°F)
Mean maximum -9°C
(17°F)		 -8°C
(19°F)		 1°C
(34°F)		 10°C
(50°F)		 20°C
(69°F)		 25°C
(77°F)		 28°C
(83°F)		 27°C
(81°F)		 18°C
(65°F)		 10°C
(50°F)		 -1°C
(31°F)		 -6°C
(22°F)
Average high -21°C
(-5°F)		 -21°C
(-6°F)		 -12°C
(11°F)		 -2°C
(28°F)		 10°C
(50°F)		 18°C
(64°F)		 21°C
(70°F)		 18°C
(65°F)		 11°C
(52°F)		 2°C
(36°F)		 -10°C
(14°F)		 -19°C
(-3°F)
Daily mean -24°C
(-11°F)		 -25°C
(-13°F)		 -17°C
(2°F)		 -7°C
(19°F)		 5°C
(41°F)		 13°C
(56°F)		 17°C
(62°F)		 15°C
(59°F)		 8°C
(47°F)		 0°C
(33°F)		 -13°C
(8°F)		 -22°C
(-8°F)
Average low -28°C
(-17°F)		 -29°C
(-20°F)		 -22°C
(-7°F)		 -13°C
(9°F)		 -0°C
(31°F)		 8°C
(47°F)		 12°C
(55°F)		 11°C
(52°F)		 5°C
(41°F)		 -2°C
(29°F)		 -16°C
(3°F)		 -25°C
(-13°F)
Mean minimum -39°C
(-38°F)		 -42°C
(-43°F)		 -37°C
(-35°F)		 -27°C
(-17°F)		 -11°C
(13°F)		 1°C
(35°F)		 8°C
(46°F)		 6°C
(43°F)		 -1°C
(31°F)		 -9°C
(17°F)		 -29°C
(-19°F)		 -40°C
(-39°F)
Minimum -44°C
(-47°F)		 -48°C
(-54°F)		 -43°C
(-46°F)		 -31°C
(-24°F)		 -22°C
(-8°F)		 -2°C
(29°F)		 5°C
(41°F)		 5°C
(41°F)		 -4°C
(25°F)		 -13°C
(9°F)		 -31°C
(-24°F)		 -42°C
(-44°F)

Compare climate in Yellowknife with other places

Compare temperature, precipitation, sunshine, UV index in Yellowknife, Canada with other places around the world.

Monthly average precipitation in Yellowknife, Canada §

Yellowknife usually has the most precipitation in June, July and August, with an average of 8 rainy days and 50 mm (2.0 inches) of precipitation per month.The driest months in Yellowknife are January, February and December. On average, 14 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Yellowknife, Canada.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) 16 (0.6) 11 (0.4) 18 (0.7) 16 (0.6) 20 (0.8) 39 (1.5) 56 (2.2) 55 (2.2) 28 (1.1) 24 (0.9) 20 (0.8) 14 (0.6)
Average precipitation days (≥ 1 mm) 4 2 5 4 4 7 9 10 6 7 6 4

Monthly sunshine hours in Yellowknife, Canada §

The sunniest months in Yellowknife are May, June and July, when the sun shines an average of 11 hours 48 minutes a day.Least sunny months in Yellowknife: January, November and December receive an average of 2 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Yellowknife, Canada.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 76 156 232 271 367 341 378 301 208 126 94 79
Mean daily daylight hours 6h 7m 8h 51m 11h 52m 14h 57m 17h 55m 19h 46m 18h 41m 15h 52m 12h 50m 9h 48m 6h 52m 5h 6m

Solar UV radiation in Yellowknife, Canada §

Yellowknife experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 6, which corresponds to the Moderate / High category of sun exposure.January, February and November are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Yellowknife UV Index data.

Average daily maximum UV levels by month for Yellowknife, Canada.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) 1 1 3 4 5 6 6 5 4 2 1 1