A few days rain needn't worry you too much. If it rains day after day and gets cold and rainy and wet and rainy and cold (you'll know it when you see it) then it's time to worry more. I've heard it can get this way in Oregon
.
"Rain, rain, rain, rain, rain
Rain, rain, rain, sun, rain
Rain, rain, rain, rain, rain
Rain, rain, rain, rain, sun
I must be, I must be in Oregon."
Greg Brown - lyrics from 'I must be in Oregon'
I'm sure you'll have an increasing insatiable appetite to grow cannabis now and will only be satisfied by setting up something during winter. You could do a cfl grow, or get an Led or Hid setup. The latter can probably be found pretty cheap especially if you want to really go cheap and look second hand/Ebay,etc. Lots of things to discuss for all the different growing situations- but lots of the basics are the same too. You'll need a room- or two if you do a perpetual veg/flowering room setup. A flowering room must be sealed up against any light leaks. You may need a venting/cooling system.
There's lots of work to do so if you think this is a direction you want to go in....
well... You may as well get started!!