Tucson, AZ weather in July
Expect very hot weather with some rain in Tucson in July, with highs near 100°F and lows near 76°F. Rain falls on about 9 days. It is one of the warmest months in Tucson. Plan outdoor time for mornings and evenings.
- Normal high
- 100°F
- Normal low
- 76°F
- Wet days
- 9
- 2.2 in total
- Muggy days
- 4
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 102°F | 99°F |
| Normal low | 75°F | 76°F |
| Chance of a wet day | 19% | 29% |
| Sunrise / sunset | 5:20 am / 7:34 pm | 5:38 am / 7:22 pm |
| Daylight | 14.2 h | 13.7 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 am77°Fdew point 58°F
- 9 am87°Fdew point 57°F
- Noon94°Fdew point 53°F
- 3 pm98°Fdew point 51°F
- 6 pm94°Fdew point 52°F
- 9 pm87°Fdew point 55°F
NOAA hourly normals (local standard time) from Davis Monthan AFB (5 mi away); average wind 8 mph; clear or few clouds in 61% of daytime hours, mostly cloudy or overcast in 25%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more30 of 31
- Muggy daysdaily mean dew point 65°F or more4 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in5 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 2.2 in; a dry July brings about 0.9 in and a wet one about 3.2 in (25th and 75th percentiles). About 1 day brings half an inch or more, and about 1 an inch or more.
How July varies from year to year
- Warmest July, 1991-20201994: average high 105°F
- Coolest July1999: average high 95°F
- Wettest July2017: 6.8 in
- Driest July1995: 0.04 in
- Highest reading114°F (July 28, 1995)
- Lowest reading59°F (July 2, 1992)
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 | 101°F | 100°F | 99°F |
| Normal low | 71°F | 76°F | 75°F |
| Wet days | 2 | 9 | 9 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 14.2 h | 14.0 h | 13.3 h |
Highs change by -1°F from June and -1°F into August.
Nearby alternatives in July
- Warmer: San Tan Valley, AZ76 mi · high 107°F · 5 wet days
- Drier: San Tan Valley, AZ76 mi · high 107°F · 5 wet days
- Cooler: Flagstaff, AZ210 mi · high 82°F · 12 wet days
How Tucson ranks in July
- Normal high16th warmest of 378 cities; 9th of 13 in Arizona
- Wet days164th driest of 378
- Comfortable days251st most of 340
What to pack for Tucson in July
- Light, breathable clothing – highs near 100°F and about 4 muggy days
- A rain jacket or umbrella – rain on about 9 days
- Sunglasses and sunscreen – about 14.0 hours of daylight and highs near 100°F
Heating and cooling
July has 0 heating degree days and 721 cooling degree days (base 65°F), 15% of the year's total heating and cooling demand.
Questions
How hot is Tucson in July?
The normal high is 100°F and the normal low is 76°F. From 1991 to 2020 the hottest July reading was 114°F (July 28, 1995).
Does it rain a lot in Tucson in July?
About 9 days in July have at least 0.01 in of precipitation, and the normal total is 2.2 in. The wettest July in 1991-2020 was in 2017 (6.8 in); the driest was in 1995 (0.04 in).
Is July a good time to visit Tucson?
July ranks 10th of 12 months on our comfort score for Tucson (35 out of 100). It has almost no comfortable days and about 30 days at 90°F or hotter. The best months are January, February and March.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: Tucson Intl Airport (USW00023160), 6.5 mi SSW of the city center, 2,549 ft (68 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Davis Monthan AFB (USW00023109), 4.6 mi SSE of the city center, 2,654 ft (173 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Tucson International Airport (722740-23160), 6.4 mi SSW of the city center, 2,551 ft (70 ft higher than the city). Hourly observations, 1991-2020.