Hi from Seattle. It's currently raining, and I wish I'd left my jacket at home. We get an almost constant drizzle of wet in winter.

Once or twice a year, it'll rain for 48 hours straight and dump three inches of water on us, but the rest of the time, it's like unpleasantly heavy fog

That is 1m a year. Which is like 3mm a day (if it rained every day) but really Seattle gets that over about 9 months. Which is like 4 or 5mm a day.