How Cold is Alaska? Weather by Region in the 49th State

Both Alaska and Canada boast extreme lows averaging about -80°F, with Canada just breaking this number and reaching -81°F making it slightly colder than Alaska.

Generally speaking, however, these temperatures are quite rare and parts of Alaska and Canada do rival each other in terms of low temperatures, especially during the winter months.

Alaska does boast some of the most extreme cold weather in the United States, particularly in its northern and interior regions. However, Canada, being a much larger country, has numerous areas that experience extreme cold as well, especially in its northern territories and prairie provinces.

Cities like Yellowknife in the Northwest Territories or Winnipeg in Manitoba are renowned for their bitterly cold winters. As is Snag in the Yukon.

While both regions feature extremely cold areas and Canada currently holds the record for the lowest temperatures, whether Alaska is colder than Canada largely depends on the specific locations being compared.

No, Alaska is not cold all year round consistently, but there are going to be cooler days and nights, regardless of the region of the state, all year round.

Certain months, of course, including September through May typically experience the coldest temperatures throughout the state. However, Alaska is also recognized for its unanticipated warm weather, particularly in the summer months of June through August in some regions.

Alaska is typically cold for 9 months of the year, between September and May. Of course, there are always exceptions when temperatures may remain respectively high throughout September or may become milder as spring begins to unfold in April.

These months before and after the summer bring in the most unpredictable weather for tourists since weather can be more difficult to predict ahead of time.

Yes, believe it or not, it absolutely does get hot in Alaska! Contrary to popular belief owing to its northernmost location in the United States, Alaska experiences some hot summer days in the months of July and August.

In Anchorage, Alaska’s largest city, summer temperatures have been known to reach up to 80°F during the hottest parts of the day. Denali National Park in the northern interior of the state has had some record-breaking temperature spikes during these months as well, with the climate reaching a staggering 90+°F with humidity!

So, no matter what you hear or read, it’s important to pack at least one T-shirt and a pair of shorts for your visit, particularly if you’re visiting in the summer months.

Yes, Alaska receives a significant amount of snowfall, particularly in its mountainous regions. On average, Anchorage can see around 75 inches of snow each year, while areas in the Alaska Range and the coastal mountains can receive hundreds of inches annually.

The town of Valdez, nestled in the Chugach Mountains, is among the snowiest places in Alaska, often accumulating over 300 inches of snow each year.

However, it’s worth noting that snowfall can vary widely across the state, with the Arctic and interior regions experiencing more precipitation and, thus, more snow compared to the southern and coastal areas.

Anchorage, Alaska typically experiences milder temperatures than the rest of the state and as a result, its coldest months are January and February with an average temperature of around 20°F.

By March and April, temperatures start to creep up over freezing during the daytime when sunlight is present, while still dropping down to lows of 20-28°F at night.

This trend continues into the summer months, with July and August bringing in the main warmth from the sun and raising the average temperatures to between 55-65°F.

Come August and September, cooler temperatures as well as more unpredictable weather patterns start to occur more frequently due to the transition between summer and fall.

↪️ Pro Tip: The word “fall” is a joke to most Alaskans… you’ll primarily hear that Alaska has two seasons: summer and winter. Fall, or autumn, takes place over the course of just a few days or weeks, depending on the region, where the foliage spikes and is then quickly covered by a thick blanket of snow.

Snowfall does occur in the months of September and October, though it usually begins with light dustings before leaving the ground hidden for the next 8 months or so.

Despite Alaska’s weather being wildly unpredictable, the winter months usually provide a bit more consistency with temperatures between -50°F and 30°F, depending on the region.

Fairbanks and the Arctic interior have the lowest temperatures averaging in the -20s to -30s, while Juneau and the Southeast have milder winters with temperatures in the teens to mid-30s.

But, if you’ll be in Homer at the southernmost tip of the Kenai Peninsula, then you can expect temperatures in the teens or mid-20s throughout most of the winter season.

If warm weather is on your radar for Alaska, then July is your best bet with average temperatures ranging from the 50s to 70s Fahrenheit.
Again, that’s not to say that you can’t experience torrential downpouring rain, high winds, cloudy or overcast days, and temperatures well below these averages.

Precipitation should be expected and temperatures range massively from day to night. Be sure to pack plenty of layers to account for drastic weather changes!

August temperatures will range between regions in Alaska, but for the most part, you can expect mild temperatures between 40°F and 75°F.
Water temperatures are also at their highest in the late summer months, with averages in Seward remaining between 43°F and 51°F.

Yes, that’s the “high” ocean temperature in Resurrection Bay! Perfect for polar plunges all year long.

In September, visitors can expect to experience average high temperatures in the 50s with the average low in the 40s.

September isn’t necessarily a great month to visit Alaska since salmon fishing becomes scarce, temperatures start to drop, the days get shorter, and most wildlife has moved deep into the woods in preparation for the treacherous winter ahead.

It’s one of our favorite times to be in Alaska since the foliage is absolutely out of this world, but for the average tourist who is short on time and wants to squeeze a lot of activities in, it’s not exactly prime season.

On Average, Alaska enjoys temperatures between -25°F and 75°F, which may sound drastic but is fairly typical for a state that encompasses such an expansive geographic area (over one-third of the size of the contiguous United States).

No matter what time of the year you plan on traveling to Alaska, make sure to pack some layers!

The coldest day on record in Alaska is January 23rd, 1971 when the temperature dropped to -80°F (-62.2 °C).

History has shown over time that as much data as we collect, there is always room for exceptions thanks to the drastic temperature changes between the Kenai Peninsula and the Arctic Circle where wild polar bears roam.

In the 2023-2024 winter season, Alaska experienced some strange weather patterns with typical lows rising and average temperatures remaining higher than usual for longer periods of time.

Snowfall has also been less than in previous years, with the snowfall being recorded at 64.1 inches.

Compared to an average of 87 inches in previous years, this has had a significant impact on skiing and other winter activities in the area.