San Antonio weather in July
In July, San Antonio has an average high of 36 °C96 °F and an average low of 24 °C75 °F, with about 71 mm2.8 in of precipitation. It is the 2nd warmest month of the year and ranks 4th for precipitation.
How July compares with other months
Compared with June, July is 0.8 °C1.4 °F warmer on average. Compared with August, July is 0.7 °C1.2 °F cooler on average and wetter by 9 mm0.4 in. Daylight lasts about 13.9 hours around the middle of the month. Average relative humidity is 65% and the average cloud amount 44%.
Is July a good time to visit San Antonio?
July is not among the most comfortable months by our comfort score: it is hot (average high 36 °C96 °F) and it is fairly wet (71 mm2.8 in). The most comfortable months in San Antonio are February–April and October–December.
What to wear in July
For San Antonio in July, pack very light, breathable clothing, a sun hat and plenty of water.
July in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| San Antonio | 3696 | 2475 | 712.8 |
| Austin | 3696 | 2475 | 602.3 |
| Killeen | 3595 | 2374 | 562.2 |
| Corpus Christi | 3492 | 2577 | 843.3 |
| Piedras Negras | 3799 | 2577 | 522.1 |
| Ciudad Acuña | 3799 | 2577 | 431.7 |
| Nuevo Laredo | 3798 | 2476 | 622.4 |
| College Station | 3494 | 2374 | 722.8 |
| Waco | 3596 | 2475 | 532.1 |
Nearby places that are more than 1 °C1.8 °F warmer in July: Piedras Negras and Ciudad Acuña.
Other months in San Antonio
- January17 °C63 °F / 5 °C40 °F
- February20 °C68 °F / 6 °C44 °F
- March24 °C76 °F / 11 °C51 °F
- April29 °C84 °F / 15 °C59 °F
- May32 °C89 °F / 19 °C67 °F
- June35 °C95 °F / 23 °C73 °F
- July36 °C96 °F / 24 °C75 °F
- August36 °C97 °F / 24 °C76 °F
- September32 °C90 °F / 21 °C70 °F
- October28 °C83 °F / 16 °C60 °F
- November23 °C73 °F / 10 °C50 °F
- December18 °C64 °F / 5 °C42 °F
Frequently asked questions
How warm is San Antonio in July?
In July the average high in San Antonio is 36 °C (96 °F) and the average low is 24 °C (75 °F).
Does it rain a lot in San Antonio in July?
On average about 71 mm (2.8 in) of precipitation falls in July; it ranks 4th of the 12 months.
Is July the warmest month in San Antonio?
No. The warmest month in San Antonio is August, with an average high of 36 °C (97 °F). The coldest month is January, with an average low of 5 °C (40 °F).
How long is the day in San Antonio in July?
In the middle of July the day in San Antonio lasts about 13.9 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is San Antonio in July?
The average relative humidity in July is about 65%. This is a long-term average for the whole day.
How cloudy is San Antonio in July?
On average about 44% of the sky is covered by cloud in July. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 302 m, while San Antonio lies at about 198 m. Temperatures on this page were therefore adjusted by +0.7 °C1.2 °F using the standard lapse rate of 6.5 °C per 1,000 m.