The Coldest Cities in America

The Coldest Cities, Ranked

Ranked by mean annual temperature — the fairest single measure of how cold a place is over a whole year — from our 2015–2024 NOAA data. Two Alaskan cities lead, then a tight cluster across Minnesota, North Dakota and Montana.

“Coldest since 2015” is the lowest temperature in our ten-year window, not the all-time record — historic lows are colder still (International Falls has hit about −55°F historically; Fairbanks −66°F in 1934, per NOAA). For reference, Minneapolis averages about 47.5°F and Buffalo, NY about 48°F in our data — cold, but well short of this list. Explore any city's full history on our Anchorage, Duluth and Fargo pages.

The Coldest City in the Lower 48

Take Alaska out of it and the title comes down to a handful of towns strung along the Minnesota–North Dakota–Canada line. The winner on reputation — and on our numbers — is International Falls, Minnesota, which averages about 38.8°F a year and legally owns the nickname “Icebox of the Nation.” It's a small town, though. Among cities of real size, Duluth and Grand Forks lead at about 41°F, with Fargo and Bismarck close behind. Bismarck is the coldest state capital in the contiguous US.

What ties them together isn't elevation or latitude alone — it's the open, treeless Red River Valley and northern plains. There's nothing between these cities and the Canadian Arctic to slow a cold front, so when Arctic air spills south it arrives at full strength. The same setup drives the worst blizzards in US history.

The True Extremes: Interior and Arctic Alaska

No city touches what Alaska's remote interior and North Slope endure. On the Arctic coast, Utqiaġvik (Barrow) averages around 16°F for the year in our data; the oil-field stations at Prudhoe Bay and Deadhorse sit near 15°F, with routine winter lows below −40°F. These are settlements and work camps, not cities, which is why they don't headline the list — but they are the genuinely coldest inhabited places in the country.

The all-time US record belongs to the interior: −80°F at Prospect Creek, Alaska on January 23, 1971, verified by NOAA. The record for the contiguous 48 states is −70°F at Rogers Pass, Montana on January 20, 1954. See how those stack up against the world's all-time lows in our roundup of the coldest temperatures ever recorded.

The Coldest States

By statewide mean annual temperature, Alaska is the coldest state in the country by a wide margin — roughly 26°F, some 14°F below the next name on the list. After that it's the northern tier: North Dakota, Minnesota and Maine lead the Lower 48, with Wyoming and Montana close behind (the Mountain West runs cold because of elevation as much as latitude).

Browse record lows and winter extremes state by state on our US weather records pages.

What Actually Makes a City Cold

Four things stack up to produce a cold city, and the coldest places have most of them at once:

• Latitude. The farther north, the lower the sun and the shorter the winter day. Fairbanks gets under four hours of daylight at the solstice — there's barely any sun to warm the ground.
• Continentality. Distance from the ocean is the big one. Water holds heat and releases it slowly; land doesn't. That's why coastal Anchorage is 9°F warmer than inland Fairbanks despite being at a similar latitude, and why the Dakotas swing so hard between seasons.
• Elevation. Air cools roughly 3.5°F for every 1,000 feet up, which is why high valleys in Montana and Wyoming out-chill lower cities much farther north.
• Clear-sky radiative cooling. On calm, cloudless winter nights, heat escapes straight to space and cold air pools in low spots — the “frost hollow” effect that lets valley towns like Helena and International Falls post their most savage lows.

Even the Icebox Is Warming

Here's the part the standard listicles miss. Our recent-decade averages run a touch above the older NOAA normals almost everywhere on this list. Fairbanks' 2015–2024 mean of 29.5°F sits above its longer-term normal near 28°F, and Alaska has warmed faster than any other state — its winters most of all. The cold cities are still cold; they're just, measurably, a little less cold than they used to be. It's the mirror image of what we found looking at US cities warming since 1990 and the shrinking snowiest cities' snowfall.

How We Computed This

City figures come from NOAA GHCN-Daily records in our database, using the primary long-record airport station for each city. Daily highs and lows (stored in tenths of a degree Fahrenheit) were averaged across the ten years 2015–2024; “mean annual temperature” is the average of the daily high and low. We validated the method against published NOAA normals for Fairbanks, Duluth and Fargo before ranking. The “coldest since 2015” figure is the single lowest reading in that window — all-time records, statewide averages and the national extremes are from NOAA and are cited inline.

Frequently Asked Questions

Keep Exploring

See the flip side in the snowiest cities in America, read about the coldest temperatures ever recorded and the worst blizzards in US history, browse US weather records by state, or look up historical temperatures for any US city and date with our lookup tool.

Sources & Method

City averages: NOAA GHCN-Daily via our database (2015–2024). Long-term normals and national records from NOAA NCEI. The −80°F US record (Prospect Creek, AK, 1971) and the −70°F Lower-48 record (Rogers Pass, MT, 1954) are NOAA-verified state and national extremes; statewide mean temperatures are from NOAA-derived climate rankings. “Icebox of the Nation” is a federally registered trademark held by International Falls, Minnesota.