Northwest Arctic Borough Climate
Northwest Arctic Borough, Alaska
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
23.4°F
Annual Precip
10.5"
Annual Snowfall
64.2"
Extreme Heat Days
0
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
273
Limited to cold-tolerant varieties
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Northwest Arctic Borough
Climate Verdict
Northwest Arctic Borough has a cold, with an average annual temperature of 23.4°F, arid conditions receiving just 10.5 inches of precipitation annually, rare extreme heat with only 0.1 days above 90°F annually, heavy winter snowfall averaging 64.2 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are severe, with January averaging a frigid -1.5°F. summers are cool, with July averaging only 53.1°F. Residents experience a substantial 55°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Northwest Arctic Borough is 12.4°F cooler than the Alaska statewide average of 35.7°F, it is also noticeably drier, receiving 43.0 inches less precipitation than the state average.
Climate Profile
About Northwest Arctic Borough Weather
Deep subarctic cold dominates the year
The annual average temperature of 23.4°F is roughly 30 degrees lower than the national median. This region experiences a true subarctic climate where freezing temperatures are the standard for most months. Extreme heat is nonexistent, with zero days recorded at or above 90°F.
Well below the Alaska state average
The borough's 23.4°F average is significantly colder than the state mean of 35.9°F. It represents the transition from the subarctic interior to the high arctic conditions found further north. It remains one of the coldest jurisdictions in the entire state.
A bridge between Nome and the North Slope
This borough is about 9 degrees warmer than the North Slope but nearly 5 degrees colder than Nome. It receives 10.5 inches of precipitation, making it twice as wet as the North Slope but still relatively dry. Snowfall is consistent at 64.2 inches, more than its northern neighbor.
Frozen winters and cool, brief summers
Winter temperatures average a cold 0.8°F, while January specifically drops to -1.5°F. Summers are brief and cool, peaking at a July average of 53.1°F with no extreme heat days. Most of the 64.2 inches of annual snow falls during the long frozen season.
Prepare for extreme cold and snow
Industrial-grade heating and heavy insulation are mandatory for winter survival in this climate. Residents need specialized gear for the 64.2 inches of snow and sub-zero January lows. Summer planning involves preparing for mild 53°F days rather than heat.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.