Climate Comfort Score
37/100
Below Average
2026 data Public-data reference. official source
Port Alexander, AK Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →
30-year climate normals from 1 weather station (1991-2020).
Port Alexander, Alaska has an average annual temperature of 46°F and a climate comfort score of 37/100 (Below Average). Annual precipitation totals 162.0", including 56.0" of snow. Based on NOAA 30-year normals (1991–2020).
Avg Temperature
46°F (8°C)
Avg High
51°F
Avg Low
40°F
Annual Precip
162.0"
Annual Snow
56.0"
Comfort Score
37/100
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) 37.0%
National median (≈55)
PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Port Alexander area.
Warming context for Port Alexander
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Port Alexander 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 | 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
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
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: Port Alexander, AK
The NOAA 1991–2020 climate normals describe Port Alexander, Alaska as a location with an annual average temperature of 46°F, ranging from a mean daily high of 51°F to a mean daily low of 40°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00507557, 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. Port Alexander receives roughly 162.0 inches of precipitation each year, with 56.0 inches typically falling as snow. Growing-season length varies with elevation and microclimate, 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 37/100 (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 July-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 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 37/100 (Below Average). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Port Alexander? ▼
Growing season data is not available for Port Alexander.
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. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Port Alexander 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 USC00507557. 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: 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
