Climate Comfort Score
77/100
Good
NOAA 1991–2020 normals 69°F annual avg Public-domain federal data
Alamo Dam, AZ Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 69°F
- Avg annual temp
- 77/100
- Comfort score
- 7.8"
- Annual precip
- 264d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Alamo Dam
Alamo Dam, Arizona averages 69°F a year and scores 77/100 on the comfort index - good, milder than 72% of U.S. cities.
- 69°F
- annual average temperature (NOAA normal)
- 77/100
- comfort score, milder than 72% of U.S. cities
- 7.8"
- precipitation, annual total
- 264 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
69°F (21°C)
Avg High
87°F
Avg Low
51°F
Annual Precip
7.8"
Annual Snow
0.0"
Comfort Score
77/100
Good
Avg Annual Temperature
69°F
30-year mean (NOAA NCEI)
Annual Precipitation
7.8"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Alamo Dam) 77.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Alamo Dam area.
How Alamo Dam compares to every U.S. city
Alamo Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
77 Top 28% higher than 72% 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 Alamo Dam
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Alamo Dam 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 | 66°F (19°C) | 32°F (0°C) | 49°F (9°C) | 1.0" | 0.0" | 9.4 | 0.0 |
| February | 70°F (21°C) | 36°F (2°C) | 53°F (12°C) | 1.1" | 0.0" | 4.1 | 0.0 |
| March | 77°F (25°C) | 41°F (5°C) | 59°F (15°C) | 0.8" | 0.0" | 0.5 | 3.0 |
| April | 85°F (29°C) | 48°F (9°C) | 67°F (19°C) | 0.2" | 0.0" | 0.0 | 11.6 |
| May | 94°F (35°C) | 57°F (14°C) | 76°F (24°C) | 0.1" | 0.0" | 0.0 | 24.3 |
| June | 105°F (40°C) | 65°F (18°C) | 85°F (29°C) | 0.1" | 0.0" | 0.0 | 29.3 |
| July | 108°F (42°C) | 74°F (23°C) | 91°F (33°C) | 0.8" | 0.0" | 0.0 | 30.8 |
| August | 107°F (42°C) | 73°F (23°C) | 90°F (32°C) | 1.2" | 0.0" | 0.0 | 30.7 |
| September | 101°F (39°C) | 64°F (18°C) | 83°F (28°C) | 0.7" | 0.0" | 0.0 | 29.1 |
| October | 90°F (32°C) | 51°F (11°C) | 71°F (21°C) | 0.6" | 0.0" | 0.1 | 18.4 |
| November | 76°F (24°C) | 40°F (4°C) | 58°F (14°C) | 0.6" | 0.0" | 1.8 | 1.6 |
| December | 65°F (18°C) | 31°F (0°C) | 48°F (9°C) | 0.7" | 0.0" | 11.7 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.0"
4.0 days with precipitation
February 1.1"
4.2 days with precipitation
March 0.8"
3.4 days with precipitation
April 0.2"
1.5 days with precipitation
May 0.1"
0.7 days with precipitation
June 0.1"
0.3 days with precipitation
July 0.8"
2.9 days with precipitation
August 1.2"
4.9 days with precipitation
September 0.7"
2.5 days with precipitation
October 0.6"
2.0 days with precipitation
November 0.6"
1.8 days with precipitation
December 0.7"
3.2 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 23
50% probability date
Last Spring Freeze
March 4
50% probability date
Growing Season
264 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,902
Higher = more heating needed
Cooling Degree Days
3,378
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Alamo Dam's climate means for you
Alamo Dam runs 69°F a year - peaking in July, coldest in December.
- Gardeners get about 264 frost-free days, with the last spring freeze near March 4 - plan the planting calendar around it, not the regional average.
- Energy bills track 1,902 heating and 3,378 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: Alamo Dam, AZ
The NOAA 1991–2020 climate normals describe Alamo Dam, Arizona as a location with an annual average temperature of 69°F, ranging from a mean daily high of 87°F to a mean daily low of 51°F. July is typically the warmest month of the year, while December is the coldest. These thirty-year averages, computed from station USC00020100, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Beyond temperature, Alamo Dam averages 7.8 inches of precipitation annually, with negligible snowfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 264 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 4 and the first fall freeze near November 23. Turning to energy use, 1,902 heating degree days and 3,378 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Alamo Dam scores 77/100 (Good), 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 Alamo Dam, AZ? ▼
The average annual temperature in Alamo Dam, Arizona is 69°F. The warmest month averages 108°F (42°C) and the coldest averages 31°F (0°C).
How much rain does Alamo Dam get? ▼
Alamo Dam receives 7.8 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Alamo Dam? ▼
Alamo Dam has a climate comfort score of 77/100 (Good), milder than 72% of U.S. cities in the PlainClimate database.
When is the growing season in Alamo Dam? ▼
Alamo Dam has approximately 264 frost-free days per year, with the last spring freeze around March 4 and the first fall freeze around November 23.
How much energy does heating and cooling require in Alamo Dam? ▼
Alamo Dam has 1,902 heating degree days and 3,378 cooling degree days annually, a fairly balanced heating/cooling split. 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 Alamo Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00020100 near Alamo Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00020100. 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.