Climate Comfort Score
38/100
Below Average
NOAA 1991–2020 normals 46°F annual avg Public-domain federal data
Port Alexander, AK Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 46°F
- Avg annual temp
- 38/100
- Comfort score
- 162.0"
- Annual precip
- 201d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Port Alexander
Port Alexander, Alaska averages 46°F a year and scores 38/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 46°F
- average temperature, NOAA 1991-2020 normal
- 38/100
- comfort score, milder than 4% of U.S. cities
- 162.0"
- annual precipitation · 56" snow
- 201 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
46°F (8°C)
Avg High
51°F
Avg Low
40°F
Annual Precip
162.0"
Annual Snow
56.0"
Comfort Score
38/100
Below Average
Avg Annual Temperature
46°F
30-year mean (NOAA NCEI)
Annual Precipitation
162.0"
Plus 56.0" of snow
Comfort score vs national 100-point ceiling (Port Alexander) 38.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Port Alexander area.
How Port Alexander compares to every U.S. city
Port Alexander's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
38 Top 96% higher than 4% 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 Port Alexander
MethodologyZooming out from Port Alexander's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 40°F (4°C) | 32°F (0°C) | 36°F (2°C) | 16.3" | 12.3" | 13.3 | 0.0 |
| February | 41°F (5°C) | 33°F (0°C) | 37°F (3°C) | 11.7" | 12.0" | 12.4 | 0.0 |
| March | 43°F (6°C) | 33°F (0°C) | 38°F (3°C) | 11.1" | 11.9" | 14.9 | 0.0 |
| April | 50°F (10°C) | 37°F (3°C) | 43°F (6°C) | 8.6" | 1.2" | 5.1 | 0.0 |
| May | 57°F (14°C) | 42°F (5°C) | 49°F (10°C) | 7.9" | 0.1" | 0.3 | 0.0 |
| June | 61°F (16°C) | 47°F (8°C) | 54°F (12°C) | 6.7" | 0.0" | 0.0 | 0.0 |
| July | 64°F (18°C) | 50°F (10°C) | 57°F (14°C) | 9.0" | 0.0" | 0.0 | 0.0 |
| August | 64°F (18°C) | 50°F (10°C) | 57°F (14°C) | 13.9" | 0.0" | 0.0 | 0.0 |
| September | 58°F (15°C) | 47°F (8°C) | 53°F (11°C) | 19.3" | 0.0" | 0.0 | 0.0 |
| October | 51°F (11°C) | 42°F (5°C) | 46°F (8°C) | 19.9" | 0.3" | 1.6 | 0.0 |
| November | 44°F (7°C) | 36°F (2°C) | 40°F (5°C) | 18.1" | 4.1" | 7.2 | 0.0 |
| December | 41°F (5°C) | 33°F (1°C) | 37°F (3°C) | 19.6" | 14.1" | 13.2 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 16.3"
Snow: 12.3"
23.7 days with precipitation
February 11.7"
Snow: 12.0"
19.4 days with precipitation
March 11.1"
Snow: 11.9"
21.5 days with precipitation
April 8.6"
Snow: 1.2"
19.2 days with precipitation
May 7.9"
Snow: 0.1"
16.6 days with precipitation
June 6.7"
15.5 days with precipitation
July 9.0"
16.6 days with precipitation
August 13.9"
18.5 days with precipitation
September 19.3"
23.3 days with precipitation
October 19.9"
Snow: 0.3"
25.3 days with precipitation
November 18.1"
Snow: 4.1"
24.1 days with precipitation
December 19.6"
Snow: 14.1"
24.4 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 5
50% probability date
Last Spring Freeze
April 18
50% probability date
Growing Season
201 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,049
Higher = more heating needed
Cooling Degree Days
2
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Port Alexander's climate means for you
Port Alexander runs 46°F a year - peaking in July, coldest in January.
- Gardeners get about 201 frost-free days, with the last spring freeze near April 18 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,049 heating and 2 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: Port Alexander, AK
Port Alexander, Alaska runs an annual average of 46°F, ranging from a mean daily high of 51°F to a mean daily low of 40°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00507557, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Port Alexander receives roughly 162.0 inches of precipitation each year, with 56.0 inches typically falling as snow. The frost-free season averages 201 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 18 and the first fall freeze near November 5. For energy use, 7,049 heating degree days and 2 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Port Alexander scores 38/100 (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, July-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 Port Alexander, AK? ▼
The average annual temperature in Port Alexander, Alaska is 46°F. The warmest month averages 64°F (18°C) and the coldest averages 32°F (0°C).
How much rain does Port Alexander get? ▼
Port Alexander receives 162.0 inches of precipitation annually, including 56.0 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Port Alexander? ▼
Port Alexander has a climate comfort score of 38/100 (Below Average), milder than 4% of U.S. cities in the PlainClimate database.
When is the growing season in Port Alexander? ▼
Port Alexander has approximately 201 frost-free days per year, with the last spring freeze around April 18 and the first fall freeze around November 5.
How much energy does heating and cooling require in Port Alexander? ▼
Port Alexander has 7,049 heating degree days and 2 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 Port Alexander climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00507557 near Port Alexander.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00507557. 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.