Climate Comfort Score
24/100
Below Average
NOAA 1991–2020 normals 42°F annual avg Public-domain federal data
Dutch Harbor, AK Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 42°F
- Avg annual temp
- 24/100
- Comfort score
- 60.1"
- Annual precip
- 165d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Dutch Harbor
Dutch Harbor, Alaska averages 42°F a year and scores 24/100 on the comfort index - below average, milder than 0% of U.S. cities.
- 42°F
- yearly average temperature, NOAA normal
- 24/100
- comfort score, milder than 0% of U.S. cities
- 60.1"
- annual precipitation · 82" snow
- 165 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
42°F (5°C)
Avg High
47°F
Avg Low
37°F
Annual Precip
60.1"
Annual Snow
81.6"
Comfort Score
24/100
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) 24.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Dutch Harbor area.
How Dutch Harbor compares to every U.S. city
Dutch Harbor's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
24 Top 100% higher than 0% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
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
Growing Season
165 days
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
What Dutch Harbor's climate means for you
Dutch Harbor runs 42°F a year - peaking in August, coldest in January.
- Gardeners get about 165 frost-free days, with the last spring freeze near May 6 - plan the planting calendar around it, not the regional average.
- Energy bills track 8,526 heating and 1 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Dutch Harbor, AK
Based on station USC00502587 feeding NOAA's 1991–2020 climate normals, Dutch Harbor, Alaska averages 42°F a year, 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. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
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. The frost-free season averages 165 days, which directly shapes the planting calendar and growing potential for the area, 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 24/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, August-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
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 24/100 (Below Average), milder than 0% of U.S. cities in the PlainClimate database.
When is the growing season in Dutch Harbor? ▼
Dutch Harbor has approximately 165 frost-free days per year, with the last spring freeze around May 6 and the first fall freeze around October 18.
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, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Dutch Harbor climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00502587 near Dutch Harbor.
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
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.