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Monthly climate in Westlock, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Westlock features a humid continental climate (Dfb). Temperatures typically range between -13 °C (9 °F) and 17 °C (63 °F) through the year, but rarely can drop to -43 °C (-45 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 541 mm (21.3 inches) and receives 95 rainy days on the 1 mm (0.04 inches) threshold annually. Westlock enjoys an average of 2844 hours of sunshine throughout the year, and daylight varies from 7 hours 25 minutes to 17 hours 3 minutes per day.

Monthly average temperatures in Westlock, Canada

The warmest months in Westlock are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (59 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -13 to -10 °C (9 - 15 °F) throughout the day. On average each year, Westlock experiences 16 days above 25 °C (77.0 °F) and 185 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Westlock. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum8°C
(46°F)		11°C
(52°F)		12°C
(54°F)		25°C
(77°F)		30°C
(86°F)		35°C
(96°F)		36°C
(97°F)		32°C
(89°F)		29°C
(84°F)		21°C
(70°F)		15°C
(60°F)		9°C
(48°F)
Mean maximum5°C
(42°F)		6°C
(44°F)		9°C
(49°F)		19°C
(66°F)		25°C
(78°F)		27°C
(81°F)		30°C
(86°F)		29°C
(84°F)		25°C
(77°F)		19°C
(66°F)		9°C
(48°F)		6°C
(43°F)
Average high-7°C
(20°F)		-8°C
(18°F)		-0°C
(32°F)		7°C
(45°F)		17°C
(62°F)		20°C
(69°F)		22°C
(72°F)		21°C
(70°F)		15°C
(60°F)		8°C
(46°F)		-1°C
(30°F)		-6°C
(22°F)
Daily mean-11°C
(12°F)		-13°C
(9°F)		-5°C
(23°F)		2°C
(36°F)		11°C
(52°F)		15°C
(59°F)		17°C
(63°F)		15°C
(60°F)		10°C
(50°F)		3°C
(37°F)		-5°C
(23°F)		-10°C
(15°F)
Average low-16°C
(4°F)		-18°C
(-0°F)		-10°C
(14°F)		-3°C
(26°F)		5°C
(40°F)		9°C
(49°F)		11°C
(53°F)		10°C
(50°F)		5°C
(41°F)		-2°C
(29°F)		-9°C
(16°F)		-14°C
(7°F)
Mean minimum-34°C
(-30°F)		-34°C
(-29°F)		-26°C
(-14°F)		-14°C
(7°F)		-3°C
(27°F)		3°C
(38°F)		7°C
(45°F)		3°C
(38°F)		-2°C
(28°F)		-9°C
(15°F)		-21°C
(-5°F)		-29°C
(-19°F)
Minimum-43°C
(-45°F)		-42°C
(-43°F)		-33°C
(-27°F)		-25°C
(-12°F)		-5°C
(23°F)		1°C
(34°F)		6°C
(43°F)		2°C
(36°F)		-4°C
(26°F)		-14°C
(7°F)		-23°C
(-9°F)		-41°C
(-41°F)

Compare climate in Westlock with other places

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

Monthly average precipitation in Westlock, Canada

Westlock usually has the most precipitation in June, July and August, with an average of 13 rainy days and 93 mm (3.7 inches) of precipitation per month. The driest months in Westlock are January, February and December. On average, 19 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Westlock. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)19 (0.7)20 (0.8)20 (0.8)32 (1.3)46 (1.8)109 (4.3)106 (4.2)65 (2.6)38 (1.5)31 (1.2)36 (1.4)19 (0.8)
Average precipitation days (≥ 1 mm)445781415108695

Monthly sunshine hours in Westlock, Canada

The sunniest months in Westlock are May, June and July, when the sun shines an average of 11 hours 3 minutes a day. Least sunny months in Westlock: January, November and December receive an average of 4 hours 19 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Westlock. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours110178235270333331353319230193142145
Mean daily daylight hours8h 0m9h 46m11h 55m14h 7m16h 3m17h 3m16h 29m14h 44m12h 36m10h 26m8h 28m7h 25m

Solar UV radiation in Westlock, Canada

Westlock experiences the highest level of ultraviolet (UV) radiation in May, 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 1. For more detailed information, check out our hourly Westlock UV Index data.

Average daily maximum UV levels by month for Westlock. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124577876311