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Monthly climate in Petrolia, Canada

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Petrolia features a humid continental climate (Dfb). Temperatures typically range between -3 °C (27 °F) and 23 °C (73 °F) through the year, but rarely can drop to -24 °C (-11 °F) or can rise to as high as 35 °C (95 °F). The average annual precipitation amounts to about 992 mm (39.0 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Petrolia enjoys an average of 2932 hours of sunshine throughout the year, and daylight varies from 9 hours 3 minutes to 15 hours 16 minutes per day.

Monthly average temperatures in Petrolia, Canada

The warmest months in Petrolia are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (69 - 73 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to 0 °C (27 - 33 °F) throughout the day. On average each year, Petrolia experiences 67 days above 25 °C (77.0 °F) and 112 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Petrolia. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(55°F)		18°C
(65°F)		22°C
(72°F)		26°C
(80°F)		33°C
(91°F)		33°C
(91°F)		35°C
(95°F)		32°C
(90°F)		33°C
(91°F)		29°C
(84°F)		23°C
(74°F)		17°C
(62°F)
Mean maximum10°C
(50°F)		13°C
(56°F)		19°C
(66°F)		23°C
(74°F)		30°C
(87°F)		32°C
(89°F)		33°C
(91°F)		31°C
(88°F)		31°C
(87°F)		27°C
(80°F)		16°C
(62°F)		14°C
(57°F)
Average high0°C
(33°F)		2°C
(35°F)		7°C
(44°F)		12°C
(54°F)		19°C
(67°F)		25°C
(77°F)		27°C
(82°F)		27°C
(80°F)		23°C
(74°F)		16°C
(62°F)		7°C
(45°F)		3°C
(38°F)
Daily mean-3°C
(27°F)		-2°C
(28°F)		2°C
(36°F)		7°C
(46°F)		14°C
(58°F)		20°C
(69°F)		23°C
(73°F)		22°C
(72°F)		18°C
(65°F)		12°C
(54°F)		4°C
(40°F)		0°C
(33°F)
Average low-6°C
(21°F)		-6°C
(22°F)		-2°C
(28°F)		3°C
(38°F)		9°C
(49°F)		15°C
(59°F)		18°C
(64°F)		17°C
(63°F)		13°C
(56°F)		8°C
(47°F)		1°C
(34°F)		-3°C
(28°F)
Mean minimum-18°C
(0°F)		-17°C
(2°F)		-10°C
(14°F)		-4°C
(25°F)		0°C
(33°F)		10°C
(50°F)		12°C
(53°F)		11°C
(51°F)		6°C
(42°F)		-0°C
(32°F)		-8°C
(19°F)		-11°C
(13°F)
Minimum-24°C
(-10°F)		-24°C
(-11°F)		-15°C
(5°F)		-6°C
(22°F)		-2°C
(29°F)		6°C
(44°F)		10°C
(51°F)		7°C
(45°F)		2°C
(35°F)		-2°C
(29°F)		-14°C
(7°F)		-19°C
(-2°F)

Compare climate in Petrolia with other places

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

Monthly average precipitation in Petrolia, Canada

Petrolia usually has the most precipitation in May, June and October, with an average of 13 rainy days and 102 mm (4.0 inches) of precipitation per month. The driest months in Petrolia are January, March and December. On average, 64 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Petrolia. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)65 (2.6)68 (2.7)68 (2.7)94 (3.7)103 (4.0)96 (3.8)89 (3.5)86 (3.4)80 (3.2)108 (4.2)76 (3.0)60 (2.4)
Average precipitation days (≥ 1 mm)9111014141111111115911

Monthly sunshine hours in Petrolia, Canada

The sunniest months in Petrolia are June, July and August, when the sun shines an average of 11 hours 22 minutes a day. Least sunny months in Petrolia: January, February and December receive an average of 4 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Petrolia. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours108160245254297346359339294228166131
Mean daily daylight hours9h 25m10h 32m11h 57m13h 25m14h 39m15h 16m14h 56m13h 50m12h 26m10h 59m9h 42m9h 3m

Solar UV radiation in Petrolia, Canada

Petrolia experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Petrolia UV Index data.

Average daily maximum UV levels by month for Petrolia. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2458910997542