Climate Comfort Score
24/100
Below Average
NOAA 1991–2020 normals 40°F annual avg 2 stations
Gustavus, AK Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 40°F
- Avg annual temp
- 24/100
- Comfort score
- 62.3"
- Annual precip
- 109d
- Growing season
30-year climate normals from 2 weather stations (1991-2020).
The climate verdict for Gustavus
Gustavus, Alaska averages 40°F a year and scores 24/100 on the comfort index - below average, milder than 0% of U.S. cities.
- 40°F
- annual average temperature (NOAA normal)
- 24/100
- comfort score, milder than 0% of U.S. cities
- 62.3"
- annual precipitation · 72" snow
- 109 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
40°F (5°C)
Avg High
48°F
Avg Low
32°F
Annual Precip
62.3"
Annual Snow
72.3"
Comfort Score
24/100
Below Average
Avg Annual Temperature
40°F
30-year mean (NOAA NCEI)
Annual Precipitation
62.3"
Plus 72.3" of snow
Comfort score vs national 100-point ceiling (Gustavus) 24.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Gustavus area.
How Gustavus compares to every U.S. city
Gustavus'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 Gustavus
MethodologyZooming out from Gustavus'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 | 32°F (0°C) | 21°F (-6°C) | 26°F (-3°C) | 5.9" | 18.1" | 25.9 | 0.0 |
| February | 36°F (2°C) | 21°F (-6°C) | 28°F (-2°C) | 3.8" | 11.4" | 22.5 | 0.0 |
| March | 40°F (4°C) | 23°F (-5°C) | 31°F (0°C) | 3.2" | 11.7" | 25.9 | 0.0 |
| April | 49°F (9°C) | 29°F (-2°C) | 39°F (4°C) | 3.0" | 1.8" | 17.5 | 0.0 |
| May | 57°F (14°C) | 35°F (2°C) | 46°F (8°C) | 3.0" | 0.0" | 8.1 | 0.0 |
| June | 61°F (16°C) | 42°F (6°C) | 52°F (11°C) | 2.9" | 0.0" | 0.7 | 0.0 |
| July | 63°F (17°C) | 47°F (8°C) | 55°F (13°C) | 4.4" | 0.0" | 0.0 | 0.0 |
| August | 63°F (17°C) | 46°F (8°C) | 54°F (12°C) | 5.4" | 0.0" | 0.2 | 0.0 |
| September | 57°F (14°C) | 40°F (5°C) | 48°F (9°C) | 8.2" | 0.0" | 3.7 | 0.0 |
| October | 47°F (8°C) | 33°F (1°C) | 40°F (5°C) | 8.4" | 0.5" | 11.5 | 0.0 |
| November | 38°F (3°C) | 26°F (-3°C) | 32°F (0°C) | 6.8" | 10.8" | 20.7 | 0.0 |
| December | 34°F (1°C) | 24°F (-5°C) | 29°F (-2°C) | 7.3" | 18.0" | 24.2 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 5.9"
Snow: 18.1"
20.2 days with precipitation
February 3.8"
Snow: 11.4"
16.7 days with precipitation
March 3.2"
Snow: 11.7"
16.9 days with precipitation
April 3.0"
Snow: 1.8"
17.9 days with precipitation
May 3.0"
15.9 days with precipitation
June 2.9"
16.2 days with precipitation
July 4.4"
17.8 days with precipitation
August 5.4"
19.4 days with precipitation
September 8.2"
21.5 days with precipitation
October 8.4"
Snow: 0.5"
23.1 days with precipitation
November 6.8"
Snow: 10.8"
21.0 days with precipitation
December 7.3"
Snow: 18.0"
20.8 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
September 16
50% probability date
Last Spring Freeze
May 30
50% probability date
Growing Season
109 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,072
Higher = more heating needed
Cooling Degree Days
0
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Gustavus's climate means for you
Gustavus runs 40°F a year - peaking in July, coldest in January.
- Gardeners get about 109 frost-free days, with the last spring freeze near May 30 - plan the planting calendar around it, not the regional average.
- Energy bills track 9,072 heating and 0 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: Gustavus, AK
Gustavus, Alaska runs an annual average of 40°F, ranging from a mean daily high of 48°F to a mean daily low of 32°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from 2 weather stations, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Anyone planning to live, garden, or travel in Gustavus should weigh precipitation alongside temperature: the annual average runs 62.3 inches, with 72.3 inches typically falling as snow. The frost-free season averages 109 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 30 and the first fall freeze near September 16. And on the energy front, 9,072 heating degree days and 0 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Gustavus scores 24/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Gustavus, AK? ▼
The average annual temperature in Gustavus, Alaska is 40°F. The warmest month averages 63°F (17°C) and the coldest averages 21°F (-6°C).
How much rain does Gustavus get? ▼
Gustavus receives 62.3 inches of precipitation annually, including 72.3 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Gustavus? ▼
Gustavus 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 Gustavus? ▼
Gustavus has approximately 109 frost-free days per year, with the last spring freeze around May 30 and the first fall freeze around September 16.
How much energy does heating and cooling require in Gustavus? ▼
Gustavus has 9,072 heating degree days and 0 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 Gustavus climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 2 weather stations near Gustavus.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00025322. 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.