Fountain Hills, AZ climate
Fountain Hills has warm winters and scorching summers, with very little rain. A typical July afternoon reaches 104°, a January night drops to 43°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Fountain Hills feels like
Winter
Spring
Summer
Fall
Fountain Hills 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 | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 67° | 43° | 1.5" | 0 | 4 | 0 | 51° – 60° |
| February | 70° | 45° | 1.5" | 0 | 4 | 0 | 51° – 62° |
| March | 76° | 49° | 1.4" | 0 | 3 | 0 | 55° – 69° |
| April | 83° | 54° | 0.4" | 0 | 1 | 0 | 63° – 74° |
| May | 93° | 62° | 0.2" | 0 | 1 | 0 | 72° – 82° |
| June | 102° | 71° | 0.0" | 0 | 0 | 0 | 81° – 90° |
| July | 104° | 78° | 0.9" | 0 | 3 | 0 | 88° – 94° |
| August | 103° | 78° | 1.2" | 0 | 4 | 0 | 87° – 95° |
| September | 98° | 72° | 0.9" | 0 | 3 | 0 | 81° – 88° |
| October | 88° | 61° | 0.7" | 0 | 2 | 0 | 71° – 79° |
| November | 75° | 50° | 0.7" | 0 | 2 | 0 | 55° – 68° |
| December | 66° | 42° | 1.2" | 0 | 3 | 0 | 51° – 58° |
| Year | 85° | 59° | 10.5" | 0.0" | 32 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Fountain Hills
Fountain Hills gets 10 inches of rain and melted snow a year. February is the wettest month and June the driest. Rain or snow falls on about 32 days a year.
A year-round growing season
Heating and cooling a home in Fountain Hills
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Fountain Hills, 24% of that work is heating and 76% is cooling, so air conditioning is the bigger bill.
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.
Fountain Hills and its neighbors
Fountain Hills borders 1 town with climate data. January nights across them vary by 1.0°. Scottsdale has both the coldest January nights (44°) and the hottest July afternoons (103°). Fountain Hills’s January low is 43° and its July high 104°.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value.
How Fountain Hills compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Fountain Hills averaged 2.3° warmer than the 1900s. The biggest change is in January (+3.2°). The shift is larger than in 99% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Fountain Hills’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. March swings the most: between 1991 and 2020 its average temperature ranged from 55° to 69°. July is the most reliable, staying within 6°.
Common questions about Fountain Hills’s climate
What is the coldest month in Fountain Hills?
December, with a typical high of 66° and a low of 42°.
What is the hottest month in Fountain Hills?
July, with a typical high of 104° and a low of 78°. About 167 days a year reach 90°.
How much snow does Fountain Hills get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Fountain Hills?
Frost is uncommon. Only 63% of years see a night at 32° or below.
What is the rainiest month in Fountain Hills?
February, with 1.5 inches of rain and melted snow. The year totals 10 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Fountain Hills itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Fountain Hills, AZ (1 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.