Interesting because we easily get over 40" annually here. I understand what you mean though by the frequency though. Our rain is typically in spells followed by plenty of dryness and sunshine. I have heard it is absolutely beautiful up there though and would consider living there if I wasn't so in love with where we live.
There's a book called "Extreme Weather" that gives some data for wettest US cities:
10 Wettest Cities By Average Annual Precipitation:
1. Aberdeen, WA------------- 83.7"
2. Astoria, OR----------------- 67.1
3. Mobile, AL------------------ 66.3
4. Miami (Hialeah), FL------ 66.0
5. Baton Rouge, LA--------- 65.1
6. North Bend, OR----------- 64.4
7. Pensacola, FL------------- 64.3
8. New Orleans, LA---------- 64.2
9. Fort Lauderdale, FL------ 64.2
10. Tallahassee, FL---------- 63.2
10 Wettest Cities By Average Number Of Days Of Precipitation:
1. Astoria, OR--------------------------------------- 196 days
2. Marquette, MI------------------------------------ 175
3. Buffalo and Syracuse, NY & Elkins, WV-- 169
4. Sault Ste. Marie, MI---------------------------- 165
5. Olympia, WA------------------------------------- 164
6. Erie, PA & Binghampton, NY---------------- 162
7. Caribou, ME & Youngstown, OH----------- 160
8. Seattle, WA-------------------------------------- 158
9. Rochester, NY----------------------------------- 157
10. Cleveland, OH--------------------------------- 155
My home town (Youngstown) is tied for #7 on the second list. I remember having lots of dreary fall and winter days when I was growing up. When I moved to Virginia I found the weather far nicer, except that I still miss the Ohio summers--here it gets a bit too oppressively hot and humid.