Mesa, AZ weather in July
In July, Mesa sees highs around 107°F and lows around 85°F: very hot and mostly dry. Expect about 3 wet days. It is one of the warmest months in Mesa. Plan outdoor time for mornings and evenings.
- Normal high
- 107°F
- Normal low
- 85°F
- Wet days
- 3
- 0.8 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 | 6% | 13% |
| Sunrise / sunset | 5:21 am / 7:41 pm | 5:39 am / 7:28 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 (11 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 snow3 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 0.8 in; a dry July brings about 0.2 in and a wet one about 1.2 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 July1992: 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 | 0 | 3 | 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: Tucson, AZ98 mi · high 100°F · 9 wet days
How Mesa ranks in July
- Normal high6th warmest of 378 cities; 4th of 13 in Arizona
- Wet days73rd driest of 378
- Comfortable days247th most of 340
What to pack for Mesa 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 Mesa 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 Mesa in July?
About 3 days in July have at least 0.01 in of precipitation, and the normal total is 0.8 in. The wettest July in 1991-2020 was in 1992 (3.0 in); the driest was in 1993, with no measurable precipitation.
Is July a good time to visit Mesa?
July ranks 10th of 12 months on our comfort score for Mesa (37 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, frost dates and humidity and wind by hour: Phoenix Sky Harbor Intl Airport (USW00023183), 11 mi W of the city center, 1,107 ft (135 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Rain: Mesa (USC00025467), 0.8 mi SSE of the city center, 1,235 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Tempe ASU (USC00028499), 5.7 mi W of the city center, 1,167 ft (75 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Phoenix Sky Harbor Intl Airport (722780-23183), 11 mi W of the city center, 1,113 ft (129 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).