Phoenix, AZ weather in July
Phoenix is very hot and mostly dry in July: highs average 107°F and nights drop to about 85°F. Expect about 4 wet days. This is the peak of the warm season in Phoenix. Midday heat is the main thing to plan around.
- Normal high
- 107°F
- Normal low
- 85°F
- Wet days
- 4
- 0.9 in total
- Muggy days
- 4
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 107°F | 106°F |
| Normal low | 83°F | 85°F |
| Chance of a wet day | 7% | 14% |
| Sunrise / sunset | 5:22 am / 7:42 pm | 5:40 am / 7:29 pm |
| Daylight | 14.3 h | 13.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Arizona time (no daylight saving)).
A typical July day
- 6 am86°Fdew point 57°F
- 9 am92°Fdew point 56°F
- Noon100°Fdew point 54°F
- 3 pm104°Fdew point 52°F
- 6 pm104°Fdew point 51°F
- 9 pm98°Fdew point 53°F
NOAA hourly normals (local standard time) from Phoenix Sky Harbor Intl Airport (4 mi away); average wind 7 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more31 of 31
- Muggy daysdaily mean dew point 65°F or more4 of 31
- Wet daysat least 0.01 in of rain or melted snow4 of 31
- Notable rainat least 0.10 in2 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 0.9 in; a dry July brings about 0.2 in and a wet one about 1.3 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How July varies from year to year
- Warmest July, 1991-20202020: average high 110°F
- Coolest July1999: average high 102°F
- Wettest July1999: 3.0 in
- Driest July1993: no measurable precipitation
- Highest reading121°F (July 28, 1995)
- Lowest reading69°F (July 15, 1999)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 104°F | 107°F | 105°F |
| Normal low | 79°F | 85°F | 84°F |
| Wet days | 1 | 4 | 5 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 14.3 h | 14.1 h | 13.4 h |
Highs change by +3°F from June and -2°F into August.
Nearby alternatives in July
- Cooler: Sedona, AZ100 mi · high 97°F · 6 wet days
How Phoenix ranks in July
- Normal high7th warmest of 378 cities; 5th of 13 in Arizona
- Wet days80th driest of 378
- Comfortable days249th most of 340
What to pack for Phoenix in July
- Light, breathable clothing – highs near 107°F and about 4 muggy days
- Sunglasses and sunscreen – about 14.1 hours of daylight and highs near 107°F
Heating and cooling
July has 0 heating degree days and 945 cooling degree days (base 65°F), 17% of the year's total heating and cooling demand.
Questions
How hot is Phoenix in July?
The normal high is 107°F and the normal low is 85°F. From 1991 to 2020 the hottest July reading was 121°F (July 28, 1995).
Does it rain a lot in Phoenix in July?
About 4 days in July have at least 0.01 in of precipitation, and the normal total is 0.9 in. The wettest July in 1991-2020 was in 1999 (3.0 in); the driest was in 1993, with no measurable precipitation.
Is July a good time to visit Phoenix?
July ranks 10th of 12 months on our comfort score for Phoenix (36 out of 100). It has almost no comfortable days and about 31 days at 90°F or hotter. The best months are January and February.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: Phoenix Sky Harbor Intl Airport (USW00023183), 4.3 mi ESE of the city center, 1,107 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Tempe ASU (USC00028499), 8.9 mi E of the city center, 1,167 ft (79 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Phoenix Sky Harbor Intl Airport (722780-23183), 4.3 mi ESE of the city center, 1,113 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).