June, July & August are usually the best times for Vancouver to have the best weather of the year & it always goes by too fast. September is a shortchanged month, because things cool down too soon in Vancouver. While most of September is still supposed to be summer, by the 2nd week its more like spring & then fall by the 3rd week. So at best, summer in Vancouver can go from the first week of June to the first week of September.
https://www.accuweather.com/en/ca/vancouver/v6c/august-weather/53286 Vancouver still might have three days that are at least 25 C or 77 F and possibly 2 days that are at least 30 C.
https://www.accuweather.com/en/us/seattle/98104/august-weather/351409 Seattle still might have a few days that are at least 30 C, or 86 F.
32 C https://www.extremeweatherwatch.com/cities/seattle/yearly-days-of-90-degrees
https://www.king5.com/article/news/local/seattle/seattle-90-degree-day-record-most-in-a-year/281-f472a02d-003c-46a0-8b05-093f4dc09398 In September 2022, Seattle was still having some days that were at least 90 F. In contrast by mid September, its difficult for Vancouver to even have a 70 F day. Summer is supposed to be at least 3 months.
However, that hardly means that all 3 months will be like typical summer weather. Soon, the last 20 C day will arrive in shortchanged September and then the next 20 C day in Vancouver will likely be in mid April. In between are 7 months of Vancouver not having even one 21 C or 70 F day. WTH?
At least Seattle gets a little less rain than Vancouver & has hotter summers, but it still has cold, damp crappy winters. Fortunately, Grunge didn't start up & grow in Vancouver, because more people might have given up from the cold & damp crappy fall & winters.
https://www.revolutioncomeandgone.com/articles/1/the-origin-of-grunge.php
https://recordweekly.com/2020/05/01/seattle-grunge-story/
