Maricopa County · Arizona
Phoenix, AZ weather averages
NOAA climate normals for 1991-2020, measured at Phoenix City, 1.3 km from the city centre — month by month temperature, rain and snow.
Quick answer
Phoenix averages a daily high of 87.2°F and a daily low of 63°F across the year, with 8.18 inches of precipitation. July is the warmest month at 105.8°F and December the coldest at 44.8°F.
- Average annual high
- 87.2°FWarmest month July
- Average annual low
- 63°FColdest month December
- Precipitation per year
- 8.18 inWettest month July
- Snowfall per year
- 0 in0.4 days at or below 32°F
Phoenix weather month by month
Normal daily high and low, precipitation and snowfall for each month, 1991-2020.
| Month | High °F | Low °F | Precip in | Snow in | Range |
|---|---|---|---|---|---|
| January | 68.6 | 45.6 | 0.98 | 0 | 45.6 to 68.6 degrees |
| February | 71.7 | 48.7 | 0.97 | 0 | 48.7 to 71.7 degrees |
| March | 78.2 | 53.5 | 1.06 | 0 | 53.5 to 78.2 degrees |
| April | 85.9 | 60.2 | 0.26 | 0 | 60.2 to 85.9 degrees |
| May | 94.7 | 69 | 0.08 | 0 | 69 to 94.7 degrees |
| June | 103.8 | 77.2 | 0.02 | 0 | 77.2 to 103.8 degrees |
| July | 105.8 | 82.5 | 1.07 | 0 | 82.5 to 105.8 degrees |
| August | 104.2 | 82.1 | 0.97 | 0 | 82.1 to 104.2 degrees |
| September | 100.1 | 75.4 | 0.61 | 0 | 75.4 to 100.1 degrees |
| October | 89.3 | 64.4 | 0.65 | 0 | 64.4 to 89.3 degrees |
| November | 76.4 | 51.9 | 0.66 | 0 | 51.9 to 76.4 degrees |
| December | 67.3 | 44.8 | 0.85 | 0 | 44.8 to 67.3 degrees |
Source: NOAA NCEI, U.S. Climate Normals 1991-2020 — station USW00093140, Phoenix City · rates as published for 1991-2020 normals
How to read Phoenix climate normals
What a climate normal is, and what it is not.
A normal is the average of thirty years of daily observations at one station — here Phoenix City, 1.3 km from the centre of Phoenix. It describes a typical year, so any single year will run warmer, cooler, wetter or drier. Readings taken at an airport on the edge of town usually sit a degree or two below a dense downtown on summer nights. Phoenix sees about 171.2 days a year at or above 90°F and about 19.3 days with a tenth of an inch of precipitation or more.
Keep going
Other Phoenix data on this site.