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Monthly climate in Hay River, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Hay River features a subarctic climate (Dfc). Temperatures typically range between -21 °C (-5 °F) and 17 °C (63 °F) through the year, but rarely can drop to -41 °C (-42 °F) or can rise to as high as 32 °C (91 °F). The average annual precipitation amounts to about 436 mm (17.2 inches) and receives 84 rainy days on the 1 mm (0.04 inches) threshold annually. Hay River enjoys an average of 2753 hours of sunshine throughout the year, and daylight varies from 5 hours 43 minutes to 19 hours 0 minutes per day.

Monthly average temperatures in Hay River, Canada

The warmest months in Hay River are June, July and August, with daily mean temperatures ranging from 14 to 17 °C (57 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -21 to -18 °C (-5 - -1 °F) throughout the day. On average each year, Hay River experiences 12 days above 25 °C (77.0 °F) and 196 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hay River. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum2°C
(36°F)		4°C
(39°F)		15°C
(60°F)		20°C
(68°F)		27°C
(80°F)		32°C
(91°F)		32°C
(89°F)		32°C
(89°F)		26°C
(79°F)		17°C
(63°F)		6°C
(43°F)		6°C
(42°F)
Mean maximum-2°C
(30°F)		-1°C
(30°F)		7°C
(44°F)		16°C
(61°F)		22°C
(71°F)		28°C
(82°F)		29°C
(85°F)		29°C
(85°F)		22°C
(71°F)		15°C
(59°F)		1°C
(35°F)		-3°C
(27°F)
Average high-17°C
(3°F)		-16°C
(3°F)		-7°C
(19°F)		2°C
(36°F)		11°C
(52°F)		18°C
(65°F)		21°C
(71°F)		20°C
(68°F)		13°C
(56°F)		4°C
(40°F)		-8°C
(18°F)		-15°C
(4°F)
Daily mean-20°C
(-3°F)		-21°C
(-5°F)		-13°C
(9°F)		-3°C
(26°F)		6°C
(43°F)		14°C
(57°F)		17°C
(63°F)		16°C
(61°F)		9°C
(49°F)		1°C
(35°F)		-11°C
(13°F)		-18°C
(-1°F)
Average low-23°C
(-9°F)		-25°C
(-12°F)		-18°C
(0°F)		-8°C
(17°F)		1°C
(34°F)		9°C
(49°F)		13°C
(56°F)		12°C
(53°F)		6°C
(42°F)		-1°C
(31°F)		-13°C
(8°F)		-21°C
(-6°F)
Mean minimum-36°C
(-32°F)		-36°C
(-32°F)		-33°C
(-27°F)		-21°C
(-6°F)		-7°C
(20°F)		3°C
(37°F)		8°C
(47°F)		7°C
(44°F)		-0°C
(32°F)		-8°C
(19°F)		-23°C
(-10°F)		-34°C
(-29°F)
Minimum-39°C
(-38°F)		-41°C
(-42°F)		-38°C
(-36°F)		-26°C
(-14°F)		-15°C
(5°F)		1°C
(34°F)		7°C
(45°F)		6°C
(43°F)		-4°C
(24°F)		-11°C
(13°F)		-27°C
(-16°F)		-37°C
(-35°F)

Compare climate in Hay River with other places

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

Monthly average precipitation in Hay River, Canada

Hay River usually has the most precipitation in June, July and August, with an average of 10 rainy days and 73 mm (2.9 inches) of precipitation per month. The driest months in Hay River are February, March and April. On average, 17 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hay River. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)22 (0.9)15 (0.6)19 (0.7)18 (0.7)22 (0.8)59 (2.3)91 (3.6)68 (2.7)44 (1.7)29 (1.1)29 (1.1)20 (0.8)
Average precipitation days (≥ 1 mm)445548111110895

Monthly sunshine hours in Hay River, Canada

The sunniest months in Hay River are May, June and July, when the sun shines an average of 12 hours 5 minutes a day. Least sunny months in Hay River: January, November and December receive an average of 2 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hay River. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours791562422803763603743142381459191
Mean daily daylight hours6h 36m9h 4m11h 53m14h 45m17h 26m19h 0m18h 6m15h 35m12h 47m9h 57m7h 17m5h 43m

Solar UV radiation in Hay River, Canada

Hay River experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 6 - 6, which corresponds to the 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 1. For more detailed information, check out our hourly Hay River UV Index data.

Average daily maximum UV levels by month for Hay River. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)123466664211