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Monthly climate in Rosthern, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Rosthern features a humid continental climate (Dfb). Temperatures typically range between -17 °C (1 °F) and 19 °C (66 °F) through the year, but rarely can drop to -42 °C (-43 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 427 mm (16.8 inches) and receives 82 rainy days on the 1 mm (0.04 inches) threshold annually. Rosthern enjoys an average of 2990 hours of sunshine throughout the year, and daylight varies from 7 hours 41 minutes to 16 hours 45 minutes per day.

Monthly average temperatures in Rosthern, Canada

The warmest months in Rosthern are June, July and August, with daily mean temperatures ranging from 16 to 19 °C (61 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -17 to -13 °C (1 - 9 °F) throughout the day. On average each year, Rosthern experiences 30 days above 25 °C (77.0 °F) and 192 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rosthern. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum6°C
(43°F)		8°C
(46°F)		14°C
(58°F)		24°C
(76°F)		32°C
(89°F)		33°C
(92°F)		35°C
(96°F)		35°C
(95°F)		31°C
(88°F)		23°C
(74°F)		13°C
(55°F)		4°C
(40°F)
Mean maximum3°C
(37°F)		2°C
(36°F)		7°C
(45°F)		20°C
(69°F)		28°C
(83°F)		28°C
(83°F)		32°C
(89°F)		32°C
(91°F)		28°C
(83°F)		20°C
(69°F)		8°C
(47°F)		3°C
(38°F)
Average high-10°C
(14°F)		-12°C
(11°F)		-3°C
(28°F)		7°C
(44°F)		18°C
(64°F)		22°C
(71°F)		24°C
(76°F)		23°C
(74°F)		17°C
(63°F)		8°C
(47°F)		-3°C
(27°F)		-9°C
(17°F)
Daily mean-15°C
(6°F)		-17°C
(1°F)		-7°C
(19°F)		1°C
(34°F)		11°C
(52°F)		16°C
(61°F)		19°C
(66°F)		17°C
(62°F)		11°C
(52°F)		3°C
(37°F)		-7°C
(20°F)		-13°C
(9°F)
Average low-19°C
(-3°F)		-22°C
(-8°F)		-12°C
(10°F)		-5°C
(23°F)		4°C
(39°F)		10°C
(50°F)		12°C
(55°F)		10°C
(50°F)		5°C
(42°F)		-2°C
(28°F)		-11°C
(12°F)		-17°C
(1°F)
Mean minimum-38°C
(-36°F)		-36°C
(-33°F)		-29°C
(-21°F)		-16°C
(4°F)		-4°C
(25°F)		4°C
(40°F)		8°C
(46°F)		5°C
(41°F)		-2°C
(29°F)		-10°C
(14°F)		-23°C
(-9°F)		-34°C
(-29°F)
Minimum-42°C
(-43°F)		-41°C
(-42°F)		-33°C
(-28°F)		-29°C
(-19°F)		-9°C
(16°F)		3°C
(37°F)		5°C
(42°F)		3°C
(38°F)		-5°C
(23°F)		-15°C
(5°F)		-27°C
(-16°F)		-39°C
(-37°F)

Compare climate in Rosthern with other places

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

Monthly average precipitation in Rosthern, Canada

Rosthern usually has the most precipitation in June, July and September, with an average of 10 rainy days and 65 mm (2.6 inches) of precipitation per month. The driest months in Rosthern are February, October and December. On average, 15 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rosthern. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)21 (0.8)13 (0.5)25 (1.0)22 (0.9)45 (1.8)76 (3.0)72 (2.8)39 (1.5)47 (1.9)20 (0.8)33 (1.3)14 (0.5)
Average precipitation days (≥ 1 mm)53669131078474

Monthly sunshine hours in Rosthern, Canada

The sunniest months in Rosthern are May, June and July, when the sun shines an average of 11 hours 33 minutes a day. Least sunny months in Rosthern: January, November and December receive an average of 4 hours 14 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rosthern. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours113198248298356330376329243216136140
Mean daily daylight hours8h 14m9h 54m11h 55m14h 0m15h 49m16h 45m16h 13m14h 35m12h 35m10h 31m8h 40m7h 41m

Solar UV radiation in Rosthern, Canada

Rosthern experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / 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 Rosthern UV Index data.

Average daily maximum UV levels by month for Rosthern. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235578876421