Phoenix has around 60 fewer freezing nights a year.
Phoenix endures about 80 more days above 90 °F each year. Phoenix sees rain or snow on roughly 24 fewer days each year.
The year at a glance
Averages from 30 years of climate history, 1991-2020
| Phoenix | Metric | Sierra Vista |
|---|---|---|
| 307 days | Sunny daysclear or partly cloudy skies | 296 days |
| 7 in | Precipitationper year | 12 in |
| 33 days | Wet daysrain or snow per year | 57 days |
| 0 in | Snowfallper year | 4 in |
| 163 days | Hot daysabove 90 °F | 83 days |
| 2 days | Freezing nightsat or below 32 °F | 62 days |
| 35% | Humidityaverage relative | 41% |
| 74 °F | Average temperatureyear round | 62 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phoenix high | 66 | 69 | 76 | 83 | 92 | 102 | 105 | 103 | 98 | 87 | 75 | 65 |
| Sierra Vista high | 61 | 64 | 70 | 77 | 85 | 94 | 91 | 89 | 87 | 80 | 70 | 61 |
| Phoenix low | 44 | 47 | 52 | 58 | 67 | 75 | 82 | 82 | 76 | 64 | 51 | 43 |
| Sierra Vista low | 30 | 33 | 38 | 43 | 51 | 60 | 63 | 62 | 57 | 47 | 37 | 30 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phoenix | 0.9 | 1.1 | 0.8 | 0.2 | 0.1 | 0.1 | 0.6 | 0.9 | 0.7 | 0.6 | 0.5 | 0.8 |
| Sierra Vista | 0.9 | 0.8 | 0.5 | 0.2 | 0.2 | 0.4 | 2.7 | 2.5 | 1.4 | 0.5 | 0.6 | 0.9 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phoenix | 23 | 21 | 25 | 27 | 29 | 29 | 24 | 26 | 28 | 28 | 25 | 24 |
| Sierra Vista | 23 | 21 | 25 | 27 | 28 | 27 | 20 | 22 | 26 | 28 | 25 | 24 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Phoenix vs another city
- Phoenix vs Glendale, AZ
- Phoenix vs Paradise Valley, AZ
- Phoenix vs Sun City, AZ
- Phoenix vs Youngtown, AZ
- Phoenix vs Tolleson, AZ
- Phoenix vs El Mirage, AZ
- Phoenix vs New York, NY
- Phoenix vs Los Angeles, CA
- Phoenix vs Chicago, IL
- Phoenix vs Houston, TX
- Phoenix vs Philadelphia, PA
- Phoenix vs San Antonio, TX
Sierra Vista vs another city
- Sierra Vista vs Sierra Vista Southeast, AZ
- Sierra Vista vs Benson, AZ
- Sierra Vista vs Corona de Tucson, AZ
- Sierra Vista vs Vail, AZ
- Sierra Vista vs Nogales, AZ
- Sierra Vista vs Rio Rico, AZ
- Sierra Vista vs New York, NY
- Sierra Vista vs Los Angeles, CA
- Sierra Vista vs Chicago, IL
- Sierra Vista vs Houston, TX
- Sierra Vista vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).