Climate Comfort Score
90/100
Excellent
NOAA 1991–2020 normals 73°F annual avg Public-domain federal data
Mormon Flat, AZ Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 73°F
- Avg annual temp
- 90/100
- Comfort score
- 12.0"
- Annual precip
- 329d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Mormon Flat
Mormon Flat, Arizona averages 73°F a year and scores 90/100 on the comfort index - excellent, milder than 94% of U.S. cities.
- 73°F
- yearly average temperature, NOAA normal
- 90/100
- comfort score, milder than 94% of U.S. cities
- 12.0"
- annual precipitation
- 329 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
73°F (23°C)
Avg High
86°F
Avg Low
60°F
Annual Precip
12.0"
Annual Snow
0.0"
Comfort Score
90/100
Excellent
Avg Annual Temperature
73°F
30-year mean (NOAA NCEI)
Annual Precipitation
12.0"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Mormon Flat) 90.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Mormon Flat area.
How Mormon Flat compares to every U.S. city
Mormon Flat'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 Mormon Flat
MethodologyZooming out from Mormon Flat's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 68°F (20°C) | 44°F (7°C) | 56°F (13°C) | 1.9" | 0.0" | 1.4 | 0.0 |
| February | 70°F (21°C) | 45°F (7°C) | 58°F (14°C) | 1.5" | 0.0" | 0.5 | 0.0 |
| March | 77°F (25°C) | 50°F (10°C) | 64°F (18°C) | 1.7" | 0.0" | 0.0 | 1.1 |
| April | 85°F (30°C) | 55°F (13°C) | 70°F (21°C) | 0.5" | 0.0" | 0.0 | 8.8 |
| May | 94°F (34°C) | 64°F (18°C) | 79°F (26°C) | 0.3" | 0.0" | 0.0 | 22.8 |
| June | 104°F (40°C) | 73°F (23°C) | 88°F (31°C) | 0.0" | 0.0" | 0.0 | 29.7 |
| July | 106°F (41°C) | 80°F (27°C) | 93°F (34°C) | 1.3" | 0.0" | 0.0 | 30.8 |
| August | 104°F (40°C) | 79°F (26°C) | 91°F (33°C) | 1.4" | 0.0" | 0.0 | 30.4 |
| September | 98°F (37°C) | 74°F (23°C) | 86°F (30°C) | 0.5" | 0.0" | 0.0 | 28.1 |
| October | 89°F (32°C) | 63°F (17°C) | 76°F (24°C) | 0.7" | 0.0" | 0.0 | 16.5 |
| November | 75°F (24°C) | 52°F (11°C) | 63°F (17°C) | 0.4" | 0.0" | 0.2 | 1.7 |
| December | 65°F (18°C) | 44°F (7°C) | 55°F (13°C) | 1.7" | 0.0" | 1.1 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.9"
5.4 days with precipitation
February 1.5"
4.8 days with precipitation
March 1.7"
4.6 days with precipitation
April 0.5"
1.5 days with precipitation
May 0.3"
1.7 days with precipitation
June 0.0"
0.5 days with precipitation
July 1.3"
3.7 days with precipitation
August 1.4"
5.0 days with precipitation
September 0.5"
2.9 days with precipitation
October 0.7"
2.5 days with precipitation
November 0.4"
1.7 days with precipitation
December 1.7"
3.9 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 24
50% probability date
Last Spring Freeze
January 29
50% probability date
Growing Season
329 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,104
Higher = more heating needed
Cooling Degree Days
4,126
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Mormon Flat's climate means for you
Mormon Flat runs 73°F a year - peaking in July, coldest in December.
- Gardeners get about 329 frost-free days, with the last spring freeze near January 29 - plan the planting calendar around it, not the regional average.
- Energy bills track 1,104 heating and 4,126 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: Mormon Flat, AZ
Based on station USC00025700 feeding NOAA's 1991–2020 climate normals, Mormon Flat, Arizona averages 73°F a year, ranging from a mean daily high of 86°F to a mean daily low of 60°F. July is typically the warmest month of the year, while December is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Mormon Flat sees about 12.0 inches of precipitation a year, with negligible snowfall. The frost-free season averages 329 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near January 29 and the first fall freeze near December 24. On the energy side, 1,104 heating degree days and 4,126 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Mormon Flat scores 90/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and December-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Mormon Flat, AZ? ▼
The average annual temperature in Mormon Flat, Arizona is 73°F. The warmest month averages 106°F (41°C) and the coldest averages 44°F (7°C).
How much rain does Mormon Flat get? ▼
Mormon Flat receives 12.0 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Mormon Flat? ▼
Mormon Flat 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 Mormon Flat? ▼
Mormon Flat has approximately 329 frost-free days per year, with the last spring freeze around January 29 and the first fall freeze around December 24.
How much energy does heating and cooling require in Mormon Flat? ▼
Mormon Flat has 1,104 heating degree days and 4,126 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 Mormon Flat climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00025700 near Mormon Flat.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00025700. 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.