The U.S. Cloud Atlas: Unveiling America's Greyest Skies

When you picture the cloudiest spots in America, your mind probably jumps straight to a rain-soaked Seattle or perhaps some misty, mysterious corner of New England. And while those guesses aren't entirely off the mark, the full picture is far more fascinating – and, dare I say, a little surprising! It turns out that figuring out "the cloudiest" isn't as simple as counting rainy days. Different metrics, from sheer number of cloudy days to total annual sunshine hours, can really shake up the rankings. But one thing's for sure: some parts of the U.S. truly spend most of their time under a blanket of grey.

Let's kick things off with an undisputed champion: Cold Bay, Alaska. This remote outpost holds the rather unenviable title of the outright cloudiest place in the entire United States. Imagine this: a staggering 304 days of cloud cover each year! That’s over 75% of the time. In fact, it recently experienced its cloudiest start to summer in over three decades. Talk about a commitment to consistent grey skies!

Zooming out a bit, Alaska, as a whole, truly dominates when it comes to state-wide cloudiness. The coastline along the Gulf of Alaska, in particular, is a hotbed for persistent cloud cover. Juneau, for instance, a major city in the state, averages a paltry 44 days of full sun annually. That's right, just 44 days! Washington state also makes a strong showing, especially if you consider full-sun days in its populated centers; Olympia, for example, only sees about 52 clear days, and even Seattle just manages 71. Head east of the Mississippi, and Vermont takes the prize as the cloudiest state, logging around 58 full sunshine days statewide. And let's not forget the Great Lakes region – places like Michigan, Ohio, New York, and Connecticut are often under considerable cloud cover, typically experiencing anywhere from 50 to 70 clear days each year. It seems the sun isn't always a given for many Americans.

Now, let's dive into some specific cities, keeping in mind that the definition of "cloudy" can shift our perspectives. A Redfin ranking from late 2024, focusing on annual cloudy days for cities with over 100,000 residents, gives us a great starting point. Leading the pack is Anchorage, Alaska, with 239 cloudy days – that’s more than two-thirds of the year! Close behind are familiar names like Seattle, Washington (226 cloudy days), and Portland, Oregon (222 cloudy days). Other notable mentions in their top ten include Eugene and Salem in Oregon, Buffalo and Syracuse in New York, Grand Rapids, Michigan, and both Pittsburgh and Cleveland from Ohio. Interestingly, Buffalo also stood out for having the most "at least partly cloudy" days, hitting 310 days annually – roughly 85% of the year!

But wait, there's another perspective! Move.org, using NOAA data and focusing on the contiguous U.S. in early 2026, presents a slightly different lineup, especially by including some smaller, often overlooked spots. Mt. Washington, New Hampshire, a place famous for its extreme weather, tops their list with a whopping 244 annual cloudy days. Coastal towns like Astoria, Oregon, and Quillayute, Washington, also feature prominently with 239 cloudy days each. Olympia and Seattle, Washington, make a repeat appearance, joined by Elkins and Beckley in West Virginia, and Binghamton and Buffalo, New York. It's fascinating how different data sets can bring new contenders to the forefront, isn't it?

And just to complicate things further (in the best way, of course!), if we shift our focus from "cloudy days" to "total annual sunshine hours," a whole new champion emerges. World Atlas, looking at long-term NOAA averages for major U.S. cities, found that Pittsburgh, Pennsylvania, actually logs the fewest sunshine hours – approximately 2,021 annually. That makes it the gloomiest major city by that particular metric! Anchorage, Alaska, follows closely behind, confirming its consistently dim outlook. Columbus, Ohio, and Portland, Oregon, also feature in the lower rankings for total sunshine, proving that there's more than one way to measure how much the sun avoids a place.

So, what’s truly going on in these places? Why do certain regions seem to attract clouds like magnets? The answers, as you might expect, lie in geography and atmospheric science. In the Pacific Northwest, specifically Oregon and Washington, marine cloud layers are a common phenomenon. Cooler, moist air from the vast Pacific Ocean constantly rolls inland, often getting trapped and enhanced by the Coast Range and the formidable Cascade Mountains. It's like a natural cloud-making factory, constantly churning out grey skies.

Alaska, with its extensive coastline, faces its own unique set of challenges. Large-scale atmospheric rivers, those long, narrow bands of moisture, frequently funnel in from the Pacific, bringing with them dense cloud cover and often heavy precipitation. The Gulf of Alaska, in particular, is a breeding ground for powerful storms that contribute significantly to the state's perpetual overcast conditions. And then there's the Great Lakes region – states like Michigan, Ohio, and New York. Here, the infamous "lake effect" takes center stage. During late fall through early spring, when colder air masses move over the relatively warmer lake waters, they pick up immense amounts of moisture. This leads to the formation of dense clouds, often resulting in heavy snow or persistent overcast conditions. It’s a truly distinctive weather pattern. Even Western Pennsylvania, including Pittsburgh, finds itself under the northern jetstream quite frequently, which tends to park right over the region, helping to keep those skies grey.

From the remote Alaskan reaches to the bustling cities of the Pacific Northwest and the industrial heartland of the Great Lakes, America’s cloudiest places are a diverse bunch. They challenge our assumptions and remind us that our continent's climate is a rich tapestry of unique, often beautiful, and sometimes persistently grey, weather patterns. So, next time you're enjoying a sunny day, perhaps spare a thought for those living under truly remarkable skies, where sunshine is a precious commodity!