St. George, AK climate
St. George has chilly winters and cool summers, with very little rain. A typical July afternoon reaches 51°, a January night drops to 23°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in St. George feels like
Winter
Spring
Summer
Fall
St. George weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt |
|---|---|---|---|
| January | 30° | 23° | 1.2" |
| February | 32° | 24° | 1.1" |
| March | 31° | 23° | 0.8" |
| April | 35° | 28° | 0.9" |
| May | 42° | 34° | 1.0" |
| June | 47° | 39° | 1.3" |
| July | 51° | 44° | 2.0" |
| August | 52° | 46° | 2.7" |
| September | 50° | 42° | 2.5" |
| October | 43° | 36° | 3.0" |
| November | 38° | 30° | 2.3" |
| December | 34° | 26° | 1.8" |
| Year | 40° | 33° | 20.4" |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more.
Rain and snow in St. George
St. George gets 20 inches of rain and melted snow a year. October is the wettest month and March the driest.
About 128 frost-free days a year
In half of years the last 32° night comes by May 31 and the first one by October 5. That leaves about 128 frost-free days for gardens, shorter than 95% of U.S. towns.
Heating and cooling a home in St. George
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In St. George, 100% of that work is heating and 0% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How St. George compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about St. George’s climate
What is the coldest month in St. George?
January, with a typical high of 30° and a low of 23°.
What is the hottest month in St. George?
August, with a typical high of 52° and a low of 46°.
When is the first frost in St. George?
In half of years the first 32° night comes by October 5, and the last spring frost by May 31.
What is the rainiest month in St. George?
October, with 3.0 inches of rain and melted snow. The year totals 20 inches.
NOAA’s gridded normals don’t cover this state, so temperatures and rainfall come from the nearest weather station. Snow, frost dates and day counts come from NOAA’s weather station at St George Island Airport, AK (2 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020.