Climate Comfort Score
54/100
Moderate
NOAA 1991–2020 normals 37°F annual avg Public-domain federal data
ST George Island, AK Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 37°F
- Avg annual temp
- 54/100
- Comfort score
- 20.4"
- Annual precip
- 127d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for ST George Island
ST George Island, Alaska averages 37°F a year and scores 54/100 on the comfort index - moderate, milder than 27% of U.S. cities.
- 37°F
- average temperature, NOAA 1991-2020 normal
- 54/100
- comfort score, milder than 27% of U.S. cities
- 20.4"
- yearly precipitation total
- 127 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
37°F (3°C)
Avg High
41°F
Avg Low
33°F
Annual Precip
20.4"
Comfort Score
54/100
Moderate
Avg Annual Temperature
37°F
30-year mean (NOAA NCEI)
Annual Precipitation
20.4"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (ST George Island) 54.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the ST George Island area.
How ST George Island compares to every U.S. city
ST George Island's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 Top 73% higher than 27% 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 ST George Island
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For ST George Island, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 30°F (-1°C) | 23°F (-5°C) | 27°F (-3°C) | 1.2" | 26.1 | 0.0 |
| February | 32°F (0°C) | 24°F (-4°C) | 28°F (-2°C) | 1.1" | 22.1 | 0.0 |
| March | 31°F (0°C) | 23°F (-5°C) | 27°F (-3°C) | 0.8" | 26.7 | 0.0 |
| April | 35°F (2°C) | 28°F (-2°C) | 32°F (0°C) | 0.9" | 22.7 | 0.0 |
| May | 42°F (5°C) | 34°F (1°C) | 38°F (3°C) | 1.0" | 12.0 | 0.0 |
| June | 47°F (8°C) | 39°F (4°C) | 43°F (6°C) | 1.3" | 1.3 | 0.0 |
| July | 51°F (11°C) | 44°F (7°C) | 48°F (9°C) | 2.0" | 0.1 | 0.0 |
| August | 52°F (11°C) | 46°F (8°C) | 49°F (10°C) | 2.7" | 0.0 | 0.0 |
| September | 50°F (10°C) | 42°F (6°C) | 46°F (8°C) | 2.5" | 1.2 | 0.0 |
| October | 43°F (6°C) | 36°F (2°C) | 40°F (4°C) | 3.0" | 8.2 | 0.0 |
| November | 38°F (3°C) | 30°F (-1°C) | 34°F (1°C) | 2.3" | 17.4 | 0.0 |
| December | 34°F (1°C) | 26°F (-3°C) | 30°F (-1°C) | 1.8" | 24.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.2"
13.0 days with precipitation
February 1.1"
14.3 days with precipitation
March 0.8"
11.2 days with precipitation
April 0.9"
11.2 days with precipitation
May 1.0"
13.1 days with precipitation
June 1.3"
11.5 days with precipitation
July 2.0"
14.4 days with precipitation
August 2.7"
17.5 days with precipitation
September 2.5"
19.5 days with precipitation
October 3.0"
23.0 days with precipitation
November 2.3"
20.9 days with precipitation
December 1.8"
18.6 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 5
50% probability date
Last Spring Freeze
May 31
50% probability date
Growing Season
127 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
10,305
Higher = more heating needed
Cooling Degree Days
0
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
What ST George Island's climate means for you
ST George Island runs 37°F a year - peaking in August, coldest in January.
- Gardeners get about 127 frost-free days, with the last spring freeze near May 31 - plan the planting calendar around it, not the regional average.
- Energy bills track 10,305 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: ST George Island, AK
In ST George Island, Alaska, the NOAA 1991–2020 climate normals put the annual average temperature at 37°F, ranging from a mean daily high of 41°F to a mean daily low of 33°F. August is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USW00025628, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Beyond temperature, ST George Island averages 20.4 inches of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 127 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 31 and the first fall freeze near October 5. Turning to energy use, 10,305 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, ST George Island scores 54/100 (Moderate), 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 ST George Island, AK? ▼
The average annual temperature in ST George Island, Alaska is 37°F. The warmest month averages 52°F (11°C) and the coldest averages 23°F (-5°C).
How much rain does ST George Island get? ▼
ST George Island receives 20.4 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for ST George Island? ▼
ST George Island has a climate comfort score of 54/100 (Moderate), milder than 27% of U.S. cities in the PlainClimate database.
When is the growing season in ST George Island? ▼
ST George Island has approximately 127 frost-free days per year, with the last spring freeze around May 31 and the first fall freeze around October 5.
How much energy does heating and cooling require in ST George Island? ▼
ST George Island has 10,305 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 ST George Island climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00025628 near ST George Island.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00025628. 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.