Climate Comfort Score
27/100
Below Average
2026 data Public-data reference. official source
Dutch Harbor, AK Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →
30-year climate normals from 1 weather station (1991-2020).
Dutch Harbor, Alaska has an average annual temperature of 42°F and a climate comfort score of 27/100 (Below Average). Annual precipitation totals 60.1", including 81.6" of snow. Based on NOAA 30-year normals (1991–2020).
Avg Temperature
42°F (5°C)
Avg High
47°F
Avg Low
37°F
Annual Precip
60.1"
Annual Snow
81.6"
Comfort Score
27/100
Below Average
Avg Annual Temperature
42°F
30-year mean (NOAA NCEI)
Annual Precipitation
60.1"
Plus 81.6" of snow
Comfort score vs national 100-point ceiling (Dutch Harbor) 27.0%
National median (≈55)
PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Dutch Harbor area.
Warming context for Dutch Harbor
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Dutch Harbor captures average conditions across the spread shown — the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 37°F (3°C) | 29°F (-2°C) | 33°F (1°C) | 6.8" | 22.0" | 21.1 | 0.0 |
| February | 39°F (4°C) | 29°F (-1°C) | 34°F (1°C) | 5.2" | 14.2" | 17.5 | 0.0 |
| March | 39°F (4°C) | 29°F (-2°C) | 34°F (1°C) | 4.7" | 16.5" | 21.5 | 0.0 |
| April | 42°F (5°C) | 33°F (0°C) | 37°F (3°C) | 3.5" | 6.3" | 13.7 | 0.0 |
| May | 47°F (8°C) | 37°F (3°C) | 42°F (6°C) | 4.2" | 0.2" | 3.3 | 0.0 |
| June | 52°F (11°C) | 42°F (6°C) | 47°F (8°C) | 2.5" | 0.0" | 0.1 | 0.0 |
| July | 57°F (14°C) | 47°F (8°C) | 52°F (11°C) | 2.3" | 0.0" | 0.0 | 0.0 |
| August | 59°F (15°C) | 48°F (9°C) | 54°F (12°C) | 2.9" | 0.0" | 0.1 | 0.0 |
| September | 55°F (13°C) | 44°F (7°C) | 49°F (10°C) | 5.7" | 0.0" | 0.7 | 0.0 |
| October | 48°F (9°C) | 38°F (4°C) | 43°F (6°C) | 7.9" | 0.4" | 3.8 | 0.0 |
| November | 43°F (6°C) | 33°F (1°C) | 38°F (3°C) | 6.7" | 6.2" | 11.9 | 0.0 |
| December | 39°F (4°C) | 31°F (-1°C) | 35°F (2°C) | 7.9" | 15.8" | 18.8 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 6.8"
Snow: 22.0"
22.0 days with precipitation
February 5.2"
Snow: 14.2"
19.4 days with precipitation
March 4.7"
Snow: 16.5"
19.2 days with precipitation
April 3.5"
Snow: 6.3"
18.0 days with precipitation
May 4.2"
Snow: 0.2"
18.1 days with precipitation
June 2.5"
14.7 days with precipitation
July 2.3"
13.6 days with precipitation
August 2.9"
15.1 days with precipitation
September 5.7"
20.1 days with precipitation
October 7.9"
Snow: 0.4"
24.9 days with precipitation
November 6.7"
Snow: 6.2"
22.5 days with precipitation
December 7.9"
Snow: 15.8"
23.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 18
50% probability date
Last Spring Freeze
May 6
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,526
Higher = more heating needed
Cooling Degree Days
1
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Related Data
PlainEnviro
EPA environmental data — pollution, water quality, and environmental health by location
PlainCarbon
Carbon emissions data — greenhouse gas reporting and facility-level CO2 data
PlainHazard
Natural disaster data — weather-related hazards, FEMA declarations, and risk profiles
PlainAirData
EPA air quality data — AQI readings, pollutant levels, and air quality trends
Climate Guides
Climate Insight: Dutch Harbor, AK
The NOAA 1991–2020 climate normals describe Dutch Harbor, Alaska as a location with an annual average temperature of 42°F, ranging from a mean daily high of 47°F to a mean daily low of 37°F. August is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00502587, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Dutch Harbor receives roughly 60.1 inches of precipitation each year, with 81.6 inches typically falling as snow. Growing-season length varies with elevation and microclimate, with the last spring freeze near May 6 and the first fall freeze near October 18. For energy use, 8,526 heating degree days and 1 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Dutch Harbor scores 27/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows — shoulder seasons for mild highs and lows, peak summer for August-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Dutch Harbor, AK? ▼
The average annual temperature in Dutch Harbor, Alaska is 42°F. The warmest month averages 59°F (15°C) and the coldest averages 29°F (-2°C).
How much rain does Dutch Harbor get? ▼
Dutch Harbor receives 60.1 inches of precipitation annually, including 81.6 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Dutch Harbor? ▼
Dutch Harbor has a climate comfort score of 27/100 (Below Average). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Dutch Harbor? ▼
Growing season data is not available for Dutch Harbor.
How much energy does heating and cooling require in Dutch Harbor? ▼
Dutch Harbor has 8,526 heating degree days and 1 cooling degree days annually. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Dutch Harbor climate data come from? ▼
All climate data comes from NOAA U.S. Climate Normals v1.0.1, covering the 30-year period from 1991 to 2020. Data is collected from weather station USC00502587. These 30-year averages are the standard reference for typical weather conditions.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00502587. For informational purposes only.
Read our methodology — how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
