- Climate of Alaska
The climate of Alaska is determined by average temperatures and precipitation received statewide over many years. The extratropical storm track runs along the Aleutian Island chain, across the Alaska Peninsula, and along the coastal area of the Gulf of Alaska which exposes these parts of the state to a large majority of the storms crossing the North Pacific. Onshore flow into the various mountain chains across the state leads to significant spatial variability in precipitation, with snowfall constituting a bulk of the annual precipitation each year. The climate in Juneau and the southeast panhandle is a mid-latitude oceanic climate (Köppen Cfb) in the southern sections and a sub Arctic oceanic climate (Köppen Cfc) in the northern parts. The climate in Southcentral Alaska is a subarctic climate (Köppen Dfc) due to its short, cool summers. The climate of the interior of Alaska is best described as extreme and is the best example of a true subarctic climate, as the highest and lowest recorded temperatures in Alaska have both occurred in the interior. The climate in the extreme north of Alaska is an Arctic climate (Köppen ET) with long, very cold winters and short, cool summers.
The climate in Juneau and the southeast panhandle is best described as "a cooler version of Seattle." It is a mid-latitude oceanic climate (Köppen climate classification Cfb) in the southern sections and a sub Arctic oceanic climate (Köppen Cfc) in the northern parts. On an annual basis, this is both the wettest and warmest part of Alaska with milder temperatures in the winter and high precipitation throughout the year. This is also the only region in Alaska in which the average daytime high temperature is above freezing during the winter months.
The climate in south central Alaska, with Anchorage as a typical city, is mild by Alaskan standards. This is due in large part to its proximity to the coast. While it does not get nearly as much rain as the southeast of Alaska, it does get more snow, although days tend to be clearer here. It is a subarctic climate (Köppen Dfc) due to its short, cool summers. There are frequent , strong southeast winds known as the Knik wind in the vicinity of Palmer, especially in the winter months.
The climate of Western Alaska is determined largely by the Bering Sea and the Gulf of Alaska. It is a subarctic oceanic climate in the southwest and a continental subarctic climate farther north. The temperature is somewhat moderate considering how far north the area is. This area has a tremendous amount of variety, especially when considering precipitation. The northern side of the Seward Peninsula is technically a desert with less than 10 inches (254 mm) of precipitation annually, while some locations between Dillingham and Bethel average around 100 inches (2,540 mm) of precipitation.
The climate of the interior of Alaska is best described as extreme and is the best example of a true subarctic climate. Some of the hottest and coldest temperatures in Alaska occur around the area near Fairbanks. The summers can have temperatures reaching into the 90s °F (near 34 °C), while in the winter, the temperature can fall below −60 °F (−51.1 °C).
The climate in the extreme north of Alaska is what would be expected for an area north of the Arctic Circle. It is an Arctic climate (Köppen ET) with long, very cold winters and short, cool summers. Even in July, the average low temperature is barely above freezing in Barrow, at 34 °F (1.1 °C).
The highest and lowest recorded temperatures in Alaska are both in the Interior. The highest is 100 °F (37.8 °C) in Fort Yukon on June 27, 1915. The lowest Alaska temperature is −80 °F (−62.2 °C) in Prospect Creek on January 23, 1971, one °F (1 °C) above the lowest temperature recorded in continental North America (in Snag, Yukon, Canada). Alaska also holds the extreme US record low temperatures for every month except July and August.
Climate data for Alaska Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C) 62
Record low °F (°C) −80
- ^ Mean Annual Precipitation in Alaska-Yukon. Oregon Climate Service at Oregon State University. Retrieved on 2006-10-23.
- ^ History for Barrow, Alaska. Monthly Summary for July 2006. Weather Underground. Last accessed 23 October 2006.
- ^ a b "NOAA Weather Radio All Hazards Information - Alaska Weather Interesting Facts and Records" (PDF). National Oceanic and Atmospheric Administration. http://www.arh.noaa.gov/docs/AKWXfacts.pdf. Retrieved 2007-01-03.
- ^ a b "State Extremes". Western Regional Climate Center, Desert Research Institute. http://www.wrcc.dri.edu/htmlfiles/state.extremes.html. Retrieved 2007-01-03.
- ^ "SD Weather History and Trivia for May: May 1". National Oceanic and Atmospheric Administration. http://www.crh.noaa.gov/fsd/?n=fsdtrivia05. Retrieved 2007-01-03.
- ^ "FAQ ALASKA - Frequently Asked Questions About Alaska: Weather". Statewide Library Electronic Doorway, University of Alaska Fairbanks. 2005-01-17. http://sled.alaska.edu/akfaq/aksuper.html#wea. Retrieved 2007-01-03.
- ^ Ned Rozell (2003-01-23). "The Coldest Place in North America". Geophysical Institute of the University of Alaska Fairbanks. http://www.gi.alaska.edu/ScienceForum/ASF16/1630.html. Retrieved 2007-01-03.
Climate of the United States States
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Rhode Island
- South Carolina
- South Dakota
- West Virginia
Federal district Insular areas
- American Samoa
- Northern Mariana Islands
- Puerto Rico
- U.S. Virgin Islands
State of Alaska Juneau (capital) Topics Society Regions Largest cities Boroughs Census Areas
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