page_title: British Columbia
section_title: Climate
hierarchical_section_title: British Columbia / Geography / Climate
context_page_description: British Columbia is the westernmost province in Canada, located between the Pacific Ocean and the Rocky Mountains. With an estimated population of 5.1 million as of 2020, it is Canada's third-most populous province. The capital of British Columbia is Victoria, the fifteenth-largest metropolitan region in Canada, named for Queen Victoria, who ruled during the creation of the original colonies. The largest city is Vancouver, the third-largest metropolitan area in Canada, the largest in Western Canada, and the second-largest in the Pacific Northwest. In October 2013, British Columbia had an estimated population of 4,606,371. The province is currently governed by the British Columbia New Democratic Party, led by John Horgan, in a minority government with the confidence and supply of the Green Party of British Columbia. Horgan became premier as a result of a no-confidence motion on June 29, 2017.
  The first British settlement in the area was Fort Victoria, established in 1843, which gave rise to the City of Victoria, at first the capital of the separate Colony of Vancouver Island.
context_section_description: Because of the many mountain ranges and rugged coastline, British Columbia's climate varies dramatically across the province.
  Coastal southern British Columbia has a mild, rainy oceanic climate, influenced by the North Pacific Current, which has its origins in the Kuroshio Current. Henderson Lake on Vancouver Island receives an average of 6,903 mm (271.8 in) of rain annually, and some parts of the area are even classified as warm-summer Mediterranean, the northernmost occurrence in the world. In Victoria, the annual average temperature is 11.2 °C (52.2 °F), the warmest in Canada.
  Due to the blocking presence of successive mountain ranges, the climate of some of the interior valleys of the province is semi-arid with certain locations receiving less than 250 millimetres (9.8 in) in annual precipitation. The annual mean temperature in the most populated areas of the province is up to 12 °C (54 °F), the mildest anywhere in Canada.
  The valleys of the Southern Interior have short winters with only brief bouts of cold or infrequent heavy snow, while those in the Cariboo, in the Central Interior, are colder because of increased altitude and latitude, but without the intensity or duration experienced at similar latitudes elsewhere in Canada. For example, the average daily low in Prince George (roughly in the middle of the province) in January is −12 °C (10 °F). Small towns in the southern interior with high elevation such as Princeton are typically colder and snowier than cities in the valleys.
  Heavy snowfall occurs in all elevated mountainous terrain providing bases for skiers in both south and central British Columbia. Annual snowfall on highway mountain passes in the southern interior rival some of the snowiest cities in Canada, and freezing rain and fog are sometimes present on such roads as well. This can result in hazardous driving conditions, as people are usually travelling between warmer areas such as Vancouver or Kamloops, and may be unaware that the conditions may be slippery and cold.
  Winters are generally severe in the Northern Interior, but even there,  milder air can penetrate far inland. The coldest temperature in British Columbia was recorded in Smith River, where it dropped to −58.9 °C (−74.0 °F) on January 31, 1947, one of the coldest readings recorded anywhere in North America. Atlin in the province's far northwest, along with the adjoining Southern Lakes region of Yukon, get midwinter thaws caused by the Chinook effect, which is also common (and much warmer) in more southerly parts of the Interior.
  During winter on the coast, rainfall, sometimes relentless heavy rain, dominates because of consistent barrages of cyclonic low-pressure systems from the North Pacific. Average snowfall on the coast during a normal winter is between 25 and 50 centimetres (9.8 and 19.7 in), but on occasion (and not every winter) heavy snowfalls with more than 20 centimetres (7.9 in) and well below freezing temperatures arrive when modified arctic air reaches coastal areas, typically for short periods, and can take temperatures below −10 °C (14 °F), even at sea level. Arctic outflow winds can occasionally result in wind chill temperatures at or even below −17.8 °C (0.0 °F). While winters are very wet, coastal areas are generally milder and dry during summer under the influence of stable anti-cyclonic high pressure.
  Southern Interior valleys are hot in summer; for example, in Osoyoos, the July maximum temperature averages 31.7 °C (89.1 °F), making it the hottest month of any location in Canada; this hot weather sometimes spreads towards the coast or to the far north of the province. Temperatures often exceed 40 °C (104 °F) in the lower elevations of valleys in the Interior during mid-summer, with the record high of 44.4 °C (111.9 °F) being held in Lytton on July 16, 1941.
  The extended summer dryness often creates conditions that spark forest fires, from dry-lightning or man-made causes. Many areas of the province are often covered by a blanket of heavy cloud and low fog during the winter months, in contrast to abundant summer sunshine
caption: The Strait of Georgia, near Vancouver
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