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Monthly climate in Smithers, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Smithers features a subarctic climate (Dfc). Temperatures typically range between -9 °C (16 °F) and 13 °C (55 °F) through the year, but rarely can drop to -38 °C (-37 °F) or can rise to as high as 33 °C (91 °F). The average annual precipitation amounts to about 1094 mm (43.1 inches) and receives 185 rainy days on the 1 mm (0.04 inches) threshold annually. Smithers enjoys an average of 2392 hours of sunshine throughout the year, and daylight varies from 7 hours 17 minutes to 17 hours 12 minutes per day.

Monthly average temperatures in Smithers, Canada

The warmest months in Smithers are June, July and August, with daily mean temperatures ranging from 10 to 13 °C (51 - 55 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -8 °C (16 - 17 °F) throughout the day. On average each year, Smithers experiences 3 days above 25 °C (77.0 °F) and 198 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Smithers. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum4°C
(40°F)		6°C
(43°F)		13°C
(55°F)		16°C
(61°F)		23°C
(74°F)		33°C
(91°F)		30°C
(87°F)		28°C
(83°F)		23°C
(74°F)		16°C
(61°F)		6°C
(44°F)		3°C
(38°F)
Mean maximum2°C
(36°F)		3°C
(37°F)		7°C
(45°F)		12°C
(54°F)		19°C
(67°F)		23°C
(75°F)		25°C
(78°F)		26°C
(80°F)		20°C
(68°F)		13°C
(55°F)		5°C
(42°F)		2°C
(35°F)
Average high-5°C
(23°F)		-5°C
(24°F)		1°C
(35°F)		5°C
(41°F)		12°C
(54°F)		15°C
(59°F)		18°C
(64°F)		17°C
(64°F)		12°C
(54°F)		5°C
(42°F)		-0°C
(32°F)		-6°C
(22°F)
Daily mean-8°C
(17°F)		-9°C
(16°F)		-3°C
(27°F)		1°C
(33°F)		7°C
(44°F)		10°C
(51°F)		13°C
(55°F)		12°C
(54°F)		8°C
(46°F)		1°C
(35°F)		-3°C
(27°F)		-8°C
(17°F)
Average low-11°C
(12°F)		-13°C
(9°F)		-7°C
(19°F)		-4°C
(25°F)		1°C
(35°F)		5°C
(41°F)		7°C
(46°F)		7°C
(45°F)		4°C
(39°F)		-2°C
(28°F)		-6°C
(22°F)		-11°C
(13°F)
Mean minimum-28°C
(-19°F)		-26°C
(-14°F)		-18°C
(0°F)		-12°C
(10°F)		-3°C
(26°F)		-1°C
(31°F)		3°C
(37°F)		2°C
(36°F)		-2°C
(28°F)		-10°C
(15°F)		-14°C
(7°F)		-21°C
(-6°F)
Minimum-38°C
(-37°F)		-32°C
(-26°F)		-24°C
(-11°F)		-18°C
(-1°F)		-5°C
(24°F)		-3°C
(27°F)		1°C
(34°F)		1°C
(34°F)		-4°C
(25°F)		-13°C
(9°F)		-22°C
(-7°F)		-36°C
(-32°F)

Compare climate in Smithers with other places

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

Monthly average precipitation in Smithers, Canada

Smithers usually has the most precipitation in September, October and November, with an average of 18 rainy days and 129 mm (5.1 inches) of precipitation per month. The driest months in Smithers are April, May and August. On average, 64 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Smithers. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)102 (4.0)76 (3.0)82 (3.2)53 (2.1)65 (2.5)82 (3.2)83 (3.3)75 (2.9)112 (4.4)125 (4.9)151 (5.9)91 (3.6)
Average precipitation days (≥ 1 mm)151414131318161416182014

Monthly sunshine hours in Smithers, Canada

The sunniest months in Smithers are May, June and July, when the sun shines an average of 10 hours 17 minutes a day. Least sunny months in Smithers: January, November and December receive an average of 2 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Smithers. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours571422052533103063292981851496984
Mean daily daylight hours7h 54m9h 43m11h 55m14h 10m16h 9m17h 12m16h 36m14h 48m12h 37m10h 24m8h 23m7h 17m

Solar UV radiation in Smithers, Canada

Smithers experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 8 - 8, which corresponds to the 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 1. For more detailed information, check out our hourly Smithers UV Index data.

Average daily maximum UV levels by month for Smithers. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124588876311