Cloudiest Places in United States

Days of Heavy Cloud

The south coast of Alaska leads the way as the cloudiest region of the United States. Several weather stations scattered along the coast's remote islands and bays report more cloudy days a year than anywhere else in the country. Places with plenty of heavy cloudy range from Juneau on Alaska's panhandle in the southeast, westward to Saint Paul Island in the Bering Sea.

Consistently the cloudiest among these isolated places is Cold Bay, a tiny community on the Alaska Peninsula in Aleutians East Borough. Cold Bay has an average of 304 overcast days a year, 83% of days, when cloud covers over three-quarters of the sky.

Saint Paul Island ranks second among the 260 major weather stations in the US that track cloudy days, with 287 days annually. Juneau is the next cloudiest with extensive cloud on 280 days a year, or about three out of four days.

Outside of Alaska, exceptionally cloudy spots include Mt. Washington in New Hampshire, and coastal areas of Washington and northern Oregon.

The rankings are for the 260 major weather stations in the US that track cloudy days.

Cloudiest places in the United States, outside of Alaska, ranked by the average number of days annually when cloud covers more than three-quarters of the sky.

Location	Days a Year With Heavy Cloud	% of Days
Mt. Washington, New Hampshire	244	67
Astoria, Oregon	239	65
Quillayute, Washington	239	65
Olympia, Washington	228	62
Seattle Airport, Washington	226	62
Portland, Oregon	222	61
Kalispell, Montana	214	59
Elkins, West Virginia	212	58
Binghamton, New York	212	58
Beckley, West Virginia	210	58

All Cloudy Days

It's a rare day when overhead cloud is scarce in Cold Bay, Alaska. Cloud covers over one-quarter of the Cold Bay sky on an average of 354 days a year. That leaves just eleven days annually of clear weather.

No major US weather station outside of Alaska comes close to recording so many cloudy and partially cloudy days.

US weather stations reporting over 310 days a year with at least one-quarter of the sky covered by cloud.

Location	Days a Year With Cloud	% of Days
Cold Bay, Alaska	354	97
St. Paul Island, Alaska	348	95
Hilo, Hawaii	329	90
Annette, Alaska	325	89
Yakutat, Alaska	324	89
Juneau, Alaska	321	88
Mt. Washington New Hampshire	321	88
Astoria, Oregon	315	86
Elkins, West Virginia	315	86
King Salmon, Alaska	314	86
Quillayute, Washington	314	86
Binghamton, New York	314	86
Olympia, Washington	312	85
Buffalo, New York	311	85

Partial Cloudy Weather

While southern Alaska excels at solid overcast, Hawaii and Florida are the places most likely to be under partial cloud cover. These are weather conditions when cloud cover extends anywhere from over one-quarter up to three-quarters of the sky.

Partially cloudy skies are most common in Lihue and Honolulu, Hawaii, accounting for half of all days there.

Places in the US with over 130 days a year when cloud covers between one-quarter and three-quarters of the sky.

Location	Days a Year With Partial Cloud	% of Days
Lihue, Hawaii	184	50
Honolulu, Hawaii	181	50
Miami, Florida	175	48
Fort Myers, Florida	168	46
West Palm Beach, Florida	159	44
Key West, Florida	155	42
Orlando, Florida	147	40
Kahului, Hawaii	145	40
Tampa, Florida	143	39
Alamosa, Colorado	137	38
Daytona Beach, Florida	132	36
Hilo, Hawaii	132	36
Brownsville, Texas	131	36