Yukon-Koyukuk Census Area Climate
Yukon-Koyukuk Census Area, Alaska
Avg Annual Temp
25.3°F
Annual Precip
15.2"
Annual Snowfall
77.9"
Extreme Heat Days
0.18181818181818185
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Yukon-Koyukuk Census Area Weather
One of the coldest places in America
The 25.3°F annual average here is more than 30 degrees below the national median. This vast region experiences a true subarctic climate with some of the lowest average temperatures in the country.
Falling far below the Alaska average
This area is significantly colder than the state average of 35.9°F. Its 25.3°F average reflects the harsh conditions of the Alaskan interior, far removed from the moderating influence of the ocean.
Colder than the Southeast Fairbanks area
At 25.3°F, Yukon-Koyukuk is slightly colder than its neighbor, Southeast Fairbanks, which averages 26.1°F. Both share a dry climate, with Yukon-Koyukuk receiving only 15.2 inches of total precipitation annually.
Severe winters and short, mild summers
Winter temperatures average a frozen -5.0°F, accompanied by 77.9 inches of annual snowfall. July offers a brief window of 59.6°F weather, but extreme heat days above 90°F are non-existent.
Survival requires extreme cold preparation
Reliable, high-capacity heating is a matter of survival given January averages of -9.2°F. Residents must manage nearly 78 inches of snow and keep specialized gear ready for months of sub-zero conditions.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.