Copper River Census Area Climate
Copper River Census Area, Alaska
Avg Annual Temp
27.8°F
Annual Precip
13.8"
Annual Snowfall
62.2"
Extreme Heat Days
0.11428571428571428
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Copper River Census Area Weather
Extreme Continental Cold
Copper River averages just 27.8°F annually, making it one of the coldest inhabited places in the nation. It lacks the moderating influence of the ocean, leading to temperatures far below the national median.
Deeply Below State Average
The area's 27.8°F annual average is over 8 degrees colder than the Alaska state average of 35.9°F. This makes Copper River a focal point for some of the state's most intense winter weather.
Colder and Drier Than Anchorage
Copper River is much harsher than Anchorage, with a January average of -2.8°F compared to Anchorage's 16.7°F. It is also significantly drier, receiving only 13.8 inches of annual precipitation.
Sub-Zero Winters and Dry Summers
Winter is extreme, with a December-February average of 1.4°F and temperatures regularly dropping below zero in January. Summers are pleasant but short, averaging 56.6°F in July with no extreme heat days.
Severe Winter Proofing Required
Homes require specialized arctic-grade insulation to handle the -2.8°F January average. Because annual precipitation is so low at 13.8 inches, managing dry conditions and dust is often more of a concern than rain.
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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.