“By the time we hit October and November, daylight hours are considerably less and there is a much lower sun angle, which explains the typical rapid cooling heading into fall,” says meteorologist Mark Madryga.
“The biggest decline in average temperature over the year is from mid-September to October, when it drops 4.6 C in Metro Vancouver,” says Madryga. There’s even more pronounced cooling in the Interior and other regions in B.C., he adds. From November to December it cools a further 2.7 C on average, then levels off in January as daylight hours remain low. And as temperatures drop, electricity consumption starts to climb.
This year’s weather is forecast to return to long-term averages. Last year El Niño led to above average temperatures, especially in Metro Vancouver, which had little or no snow at low elevations. This year, expect the opposite,” says Madryga. “La Niña is developing, but it’s pretty weak. It certainly doesn’t look like the really mild winter of last year. We’ll likely pick up more snow at sea level this year.”
Expect it to be more stormy too, especially in the Interior where there are likely to be more Arctic outbreaks and cold snaps. “People should be more prepared for cooler weather this season.”