San Tan Valley, AZ weather in July
Expect very hot, mostly dry weather in San Tan Valley in July, with highs near 107°F and lows near 77°F. Rain falls on about 5 days. It is one of the warmest months in San Tan Valley. Plan outdoor time for mornings and evenings.
- Normal high
- 107°F
- Normal low
- 77°F
- Wet days
- 5
- 1.1 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 | 74°F | 78°F |
| Chance of a wet day | 9% | 17% |
| Sunrise / sunset | 5:20 am / 7:39 pm | 5:38 am / 7:26 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 (32 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 snow5 of 31
- Notable rainat least 0.10 in3 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 1.1 in; a dry July brings about 0.4 in and a wet one about 1.6 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How July varies from year to year
- Warmest July, 1991-20201995: average high 112°F
- Coolest July2012: average high 103°F
- Wettest July1996: 5.8 in
- Driest July2010: 0.01 in
- Highest reading123°F (July 30, 1995)
- Lowest reading58°F (July 1, 1997)
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 | 105°F | 107°F | 105°F |
| Normal low | 68°F | 77°F | 77°F |
| Wet days | 1 | 5 | 5 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 14.3 h | 14.1 h | 13.3 h |
Highs change by +2°F from June and -2°F into August.
Nearby alternatives in July
- Drier: Yuma, AZ182 mi · high 107°F · 1 wet day
- Cooler: Tucson, AZ76 mi · high 100°F · 9 wet days
How San Tan Valley ranks in July
- Normal high4th warmest of 378 cities; 2nd of 13 in Arizona
- Wet days94th driest of 378
- Comfortable days250th most of 340
What to pack for San Tan Valley in July
- Light, breathable clothing – highs near 107°F and about 4 muggy days
- Layers – afternoons near 107°F but nights near 77°F
- Sunglasses and sunscreen – about 14.1 hours of daylight and highs near 107°F
Heating and cooling
July has 0 heating degree days and 832 cooling degree days (base 65°F), 16% of the year's total heating and cooling demand.
Questions
How hot is San Tan Valley in July?
The normal high is 107°F and the normal low is 77°F. From 1991 to 2020 the hottest July reading was 123°F (most recently on July 30, 1995).
Does it rain a lot in San Tan Valley in July?
About 5 days in July have at least 0.01 in of precipitation, and the normal total is 1.1 in. The wettest July in 1991-2020 was in 1996 (5.8 in); the driest was in 2010 (0.01 in).
Is July a good time to visit San Tan Valley?
July ranks 10th of 12 months on our comfort score for San Tan Valley (36 out of 100). It has almost no comfortable days and about 31 days at 90°F or hotter. The best months are January, February and December.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Casa Grande Nm (USC00021314), 14 mi S of the city center, 1,419 ft (103 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Chandler Heights (USC00021514), 9.0 mi W of the city center, 1,425 ft (97 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Phoenix Sky Harbor Intl Airport (USW00023183), 32 mi WNW of the city center, 1,107 ft (415 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Phoenix Sky Harbor Intl Airport (722780-23183), 32 mi WNW of the city center, 1,113 ft (409 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).