Volcano, HI climate
Volcano has warm winters and cool summers, with plenty of rain. A typical July afternoon reaches 73°, a January night drops to 49°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decade3° cooler than normal today. The forecast high is 70°, and a typical Oct 1 in Volcano peaks around 73°.Live forecast: National Weather Service · Normal: NOAA 1991–2020
What a year in Volcano feels like
Winter
Spring
Summer
Fall
Volcano weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground |
|---|---|---|---|---|---|---|
| January | 68° | 49° | 8.8" | 0 | 22 | 0 |
| February | 68° | 49° | 8.2" | 0 | 20 | 0 |
| March | 68° | 51° | 10.3" | 0 | 25 | 0 |
| April | 68° | 52° | 9.2" | 0 | 26 | 0 |
| May | 71° | 53° | 6.5" | 0 | 25 | 0 |
| June | 71° | 54° | 5.1" | 0 | 25 | 0 |
| July | 73° | 56° | 6.3" | 0 | 26 | 0 |
| August | 74° | 56° | 5.9" | 0 | 25 | 0 |
| September | 73° | 55° | 6.0" | 0 | 24 | 0 |
| October | 72° | 55° | 8.2" | 0 | 25 | 0 |
| November | 70° | 54° | 10.6" | 0 | 26 | 0 |
| December | 68° | 52° | 11.4" | 0 | 25 | 0 |
| Year | 70° | 53° | 96.2" | 0.0" | 295 | 0 |
“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 Volcano
Volcano gets 96 inches of rain and melted snow a year. December is the wettest month and June the driest. Rain or snow falls on about 295 days a year.
A year-round growing season
Heating and cooling a home in Volcano
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Volcano, 94% of that work is heating and 6% 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.
Volcano and its neighbors
Volcano borders 3 towns with climate data. January nights across them vary by 6.6°. Volcano Golf Course has the coldest January nights (49°) and Mountain View the hottest July afternoons (77°). Volcano’s January low is 49° and its July high 73°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Volcano compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Common questions about Volcano’s climate
What is the coldest month in Volcano?
February, with a typical high of 68° and a low of 49°.
What is the hottest month in Volcano?
August, with a typical high of 74° and a low of 56°.
How much snow does Volcano get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Volcano?
Frost is uncommon. Only 0% of years see a night at 32° or below.
What is the rainiest month in Volcano?
December, with 11.4 inches of rain and melted snow. The year totals 96 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 Hawaii Vol Np Hq 54, HI (4 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020.