I'm going to take a tour of British Columbia in Canada during the first half of September. Guided tour by bus, staying in hotels.
Itinerary: Vancouver, Vancouver Island, Prince Rupert, Prince George, Jasper & Banff National Park and back to Vancouver.
Weather conditions appear to be relatively mild and dry in that period judging from various weather web-sites, but I know that judging what clothes to bring can be difficult going from numbers alone.
Seems at the coast I can expect 15-25 Celsius,with nights 10 degrees cooler. Inland, especially at altitude in the Rockies, I have to reckon with somewhat colder temperatures, possibly just above freezing at night.
Seems that standard North-West Europe summer garb, with a light jacket and an extra sweater for colder days/evenings will do.
No need for a raincoat. Maybe a fold-able umbrella just to be sure.
Am I on the right track ?
Edit: After several comments and answer I have to clarify:
I'm mainly asking the question to check general conditions at the coast, urban areas and for stopovers during the way, considering what to wear in terms of normal sightseeing activity.
I'm well aware that conditions in the Rockies will be different and for that I will bring additional clothing fit for the situation. I have ample mountain experience, even though I'm currently physically not able to put it to much use.