i live in seattle for 10 years now - the weather here is sucks! you can count on one hand the days when you wake up in the morning and the sun is shining.
yes, usually it is not so cold as in the east coast. but the winter here is much longer then any else (beside alaska maybe).
the summer is beautifull here, but again - hardley 2 months with a lot of rain and low temp.
for israelis, i don't think seattle is the best alternative to the very hot weather in israel. seattle is the last place on earth i would consider as a place for good weather. and i'm not the only one - how many israelis live in los angeles or miami?...