San Antonio, TX weather in July
In July, San Antonio sees highs around 95°F and lows around 75°F: hot, oppressively humid and mostly dry. There are about 5 days with rain. It is one of the warmest months in San Antonio. Plan outdoor time for mornings and evenings.
- Normal high
- 95°F
- Normal low
- 75°F
- Wet days
- 5
- 2.4 in total
- Muggy days
- 30
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 94°F | 97°F |
| Normal low | 74°F | 75°F |
| Chance of a wet day | 20% | 14% |
| Sunrise / sunset | 6:37 am / 8:37 pm | 6:53 am / 8:27 pm |
| Daylight | 14.0 h | 13.6 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical July day
- 6 am76°Fdew point 73°F
- 9 am83°Fdew point 73°F
- Noon90°Fdew point 70°F
- 3 pm94°Fdew point 67°F
- 6 pm92°Fdew point 67°F
- 9 pm85°Fdew point 70°F
NOAA hourly normals (local standard time) from San Antonio Kelly AFB (6 mi away); average wind 8 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 more29 of 31
- Muggy daysdaily mean dew point 65°F or more30 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 2.4 in; a dry July brings about 0.3 in and a wet one about 3.0 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, 1991-20202009: average high 101°F
- Coolest July2007: average high 87°F
- Wettest July2002: 16.9 in
- Driest July1993: no measurable precipitation
- Highest reading107°F (July 13, 2020)
- Lowest reading64°F (July 25, 2019)
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 | 92°F | 95°F | 96°F |
| Normal low | 73°F | 75°F | 75°F |
| Wet days | 7 | 5 | 5 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 14.0 h | 13.8 h | 13.2 h |
Highs change by +3°F from June and +1°F into August.
Nearby alternatives in July
- Warmer: Laredo, TX146 mi · high 100°F · 4 wet days
- Cooler: South Padre Island, TX243 mi · high 89°F · 5 wet days
How San Antonio ranks in July
- Normal high59th warmest of 378 cities; 27th of 38 in Texas
- Wet days110th driest of 378
- Comfortable days335th most of 340
What to pack for San Antonio in July
- Light, breathable clothing – highs near 95°F and about 30 muggy days
Heating and cooling
July has 0 heating degree days and 614 cooling degree days (base 65°F), 13% of the year's total heating and cooling demand.
Questions
How hot is San Antonio in July?
The normal high is 95°F and the normal low is 75°F. From 1991 to 2020 the hottest July reading was 107°F (July 13, 2020).
Does it rain a lot in San Antonio in July?
About 5 days in July have at least 0.01 in of precipitation, and the normal total is 2.4 in. The wettest July in 1991-2020 was in 2002 (16.9 in); the driest was in 1993, with no measurable precipitation.
Is July a good time to visit San Antonio?
July ranks 11th of 12 months on our comfort score for San Antonio (36 out of 100). It has almost no comfortable days and about 29 days at 90°F or hotter. The best months are February, March and November.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: San Antonio Intl Airport (USW00012921), 8.3 mi N of the city center, 789 ft (140 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: San Antonio Kelly AFB (USW00012909), 6.1 mi WSW of the city center, 682 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: San Antonio International Airport (722530-12921), 8.3 mi N of the city center, 799 ft (150 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).