Seatle is of course the "Denley Moor" of the USA
As its says in the "The Testing of Eric Olthwaite"
"It were always raining in Denley Moor, except on days when it were fine; and there weren't many of those - not if you include drizzle as rain. And even if it weren't drizzling, it were overcast and there were a lot of moisture in the air. You'd come home as though it had been raining, even though there had been no evidence of precipitation in the rain gauge outside the town hall. "