Petersville, AK climate
Petersville has cold winters and cool summers. A typical July afternoon reaches 71°, a January night drops to 7°.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Petersville feels like
Winter
Spring
Summer
Fall
Petersville weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt |
|---|---|---|---|
| January | 22° | 7° | 1.7" |
| February | 29° | 11° | 1.7" |
| March | 36° | 14° | 1.2" |
| April | 49° | 25° | 1.4" |
| May | 61° | 34° | 2.1" |
| June | 71° | 43° | 1.8" |
| July | 71° | 48° | 4.0" |
| August | 67° | 46° | 4.9" |
| September | 57° | 38° | 5.7" |
| October | 42° | 26° | 2.9" |
| November | 27° | 15° | 2.4" |
| December | 24° | 10° | 2.1" |
| Year | 46° | 26° | 31.9" |
“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 Petersville
Petersville gets 32 inches of rain and melted snow a year. September is the wettest month and March the driest.
About 107 frost-free days a year
In half of years the last 32° night comes by May 28 and the first one by September 13. That leaves about 107 frost-free days for gardens, shorter than 99% of U.S. towns.
Heating and cooling a home in Petersville
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Petersville, 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 Petersville compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about Petersville’s climate
What is the coldest month in Petersville?
January, with a typical high of 22° and a low of 7°.
What is the hottest month in Petersville?
July, with a typical high of 71° and a low of 48°. About 1 days a year reach 90°.
When is the first frost in Petersville?
In half of years the first 32° night comes by September 13, and the last spring frost by May 28.
What is the rainiest month in Petersville?
September, with 5.7 inches of rain and melted snow. The year totals 32 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 Amber Lake, AK (21 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020.