Vancouver's Seasons:
Jan-April = rain, a little cooler, rarely snow, warming at the end of march into april
May- August = scattered rain, mostly sunny and warm
September - October = cooler, still sunny, rainy starting
November- December = rain, lots of rain, maybe one cold week with snow, and then more rain.
Average rainfall per year out of the last 5 years: 1117.2mm or 43.98 inches.
let alone all this, Vancouver is an awesome city. the rain makes it luscious and green here all year round and when we get sun it basically becomes a party in the streets. UBC is a good school (although not my choice), and good luck!