weather of Vancouver from now to end of Sept

I am moving to Vancouver next Monday and my shipping is estimated to arrive on end of Sept. The question is do I need to bring our down comforter/quilt? We have about 4 of them and they weight about 50lbs. Will we needing them from now end of Sept? Our new place should have heat (according to the relative to help us to rent). What's the temp of night in Vancouver like?