Climate Comfort Score
90/100
Excellent
NOAA 1991–2020 normals 72°F annual avg Public-domain federal data
Fountain Hills, AZ Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 72°F
- Avg annual temp
- 90/100
- Comfort score
- 10.2"
- Annual precip
- 356d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Fountain Hills
Fountain Hills, Arizona averages 72°F a year and scores 90/100 on the comfort index - excellent, milder than 94% of U.S. cities.
- 72°F
- annual average temperature (NOAA normal)
- 90/100
- comfort score, milder than 94% of U.S. cities
- 10.2"
- annual precipitation
- 356 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
72°F (22°C)
Avg High
84°F
Avg Low
61°F
Annual Precip
10.2"
Annual Snow
0.0"
Comfort Score
90/100
Excellent
Avg Annual Temperature
72°F
30-year mean (NOAA NCEI)
Annual Precipitation
10.2"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Fountain Hills) 90.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Fountain Hills area.
How Fountain Hills compares to every U.S. city
Fountain Hills's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
90 Top 6% higher than 94% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Fountain Hills
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Fountain Hills captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 64°F (18°C) | 45°F (7°C) | 54°F (12°C) | 1.4" | 0.0" | 1.2 | 0.0 |
| February | 67°F (20°C) | 46°F (8°C) | 57°F (14°C) | 1.3" | 0.0" | 0.4 | 0.0 |
| March | 74°F (23°C) | 51°F (10°C) | 62°F (17°C) | 1.3" | 0.0" | 0.0 | 1.6 |
| April | 82°F (28°C) | 56°F (14°C) | 69°F (21°C) | 0.3" | 0.0" | 0.0 | 8.5 |
| May | 91°F (33°C) | 65°F (18°C) | 78°F (25°C) | 0.2" | 0.0" | 0.0 | 22.2 |
| June | 101°F (38°C) | 73°F (23°C) | 87°F (30°C) | 0.1" | 0.0" | 0.0 | 29.2 |
| July | 103°F (39°C) | 80°F (27°C) | 92°F (33°C) | 0.8" | 0.0" | 0.0 | 30.9 |
| August | 102°F (39°C) | 80°F (27°C) | 91°F (33°C) | 1.3" | 0.0" | 0.0 | 30.6 |
| September | 97°F (36°C) | 74°F (23°C) | 85°F (30°C) | 0.8" | 0.0" | 0.0 | 27.9 |
| October | 87°F (30°C) | 63°F (17°C) | 75°F (24°C) | 0.6" | 0.0" | 0.0 | 15.4 |
| November | 74°F (23°C) | 51°F (11°C) | 63°F (17°C) | 0.7" | 0.0" | 0.3 | 0.7 |
| December | 63°F (17°C) | 44°F (7°C) | 54°F (12°C) | 1.1" | 0.0" | 1.7 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.4"
3.6 days with precipitation
February 1.3"
3.9 days with precipitation
March 1.3"
3.4 days with precipitation
April 0.3"
1.4 days with precipitation
May 0.2"
1.2 days with precipitation
June 0.1"
0.3 days with precipitation
July 0.8"
2.9 days with precipitation
August 1.3"
4.4 days with precipitation
September 0.8"
2.6 days with precipitation
October 0.6"
2.3 days with precipitation
November 0.7"
2.2 days with precipitation
December 1.1"
3.4 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 28
50% probability date
Last Spring Freeze
January 6
50% probability date
Growing Season
356 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,237
Higher = more heating needed
Cooling Degree Days
3,866
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Fountain Hills's climate means for you
Fountain Hills runs 72°F a year - peaking in July, coldest in December.
- Gardeners get about 356 frost-free days, with the last spring freeze near January 6 - plan the planting calendar around it, not the regional average.
- Energy bills track 1,237 heating and 3,866 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Fountain Hills, AZ
Fountain Hills, Arizona runs an annual average of 72°F, ranging from a mean daily high of 84°F to a mean daily low of 61°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while December is the coldest. Drawn from station USC00023190, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Fountain Hills receives roughly 10.2 inches of precipitation each year, with negligible snowfall. The frost-free season averages 356 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near January 6 and the first fall freeze near December 28. For energy use, 1,237 heating degree days and 3,866 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Fountain Hills scores 90/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings December-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Fountain Hills, AZ? ▼
The average annual temperature in Fountain Hills, Arizona is 72°F. The warmest month averages 103°F (39°C) and the coldest averages 44°F (7°C).
How much rain does Fountain Hills get? ▼
Fountain Hills receives 10.2 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Fountain Hills? ▼
Fountain Hills has a climate comfort score of 90/100 (Excellent), milder than 94% of U.S. cities in the PlainClimate database.
When is the growing season in Fountain Hills? ▼
Fountain Hills has approximately 356 frost-free days per year, with the last spring freeze around January 6 and the first fall freeze around December 28.
How much energy does heating and cooling require in Fountain Hills? ▼
Fountain Hills has 1,237 heating degree days and 3,866 cooling degree days annually, a cooling-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Fountain Hills climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00023190 near Fountain Hills.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00023190. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.