Nanwalek, AK climate
Nanwalek has chilly winters and cool summers. A typical July afternoon reaches 62°, a January night drops to 21°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Nanwalek feels like
Winter
Spring
Summer
Fall
Nanwalek weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt |
|---|---|---|---|
| January | 31° | 21° | 3.9" |
| February | 34° | 23° | 3.7" |
| March | 36° | 24° | 3.2" |
| April | 43° | 31° | 2.8" |
| May | 51° | 37° | 1.2" |
| June | 58° | 44° | 1.2" |
| July | 62° | 49° | 1.6" |
| August | 62° | 48° | 2.7" |
| September | 55° | 42° | 4.1" |
| October | 45° | 34° | 4.6" |
| November | 36° | 27° | 4.8" |
| December | 33° | 24° | 6.7" |
| Year | 45° | 34° | 40.4" |
“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 Nanwalek
Nanwalek gets 40 inches of rain and melted snow a year. December is the wettest month and May the driest.
About 145 frost-free days a year
In half of years the last 32° night comes by May 10 and the first one by October 1. That leaves about 145 frost-free days for gardens, shorter than 85% of U.S. towns.
Heating and cooling a home in Nanwalek
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Nanwalek, 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 Nanwalek compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about Nanwalek’s climate
What is the coldest month in Nanwalek?
January, with a typical high of 31° and a low of 21°.
What is the hottest month in Nanwalek?
July, with a typical high of 62° and a low of 49°.
When is the first frost in Nanwalek?
In half of years the first 32° night comes by October 1, and the last spring frost by May 10.
What is the rainiest month in Nanwalek?
December, with 6.7 inches of rain and melted snow. The year totals 40 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 Seldovia Airport, AK (12 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020.