Climate averages 1991–2020
San Antonio weather
in June.
A hot, moderately wet month: the 3rd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a hot month in San Antonio: daytime highs average 33.0°C and nights cool to about 23.1°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 69 mm of rain on roughly 10 days, which makes June a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 00 min on an average June day.
The nearest other city in this atlas is New Braunfels (47 km away). In June its highs average 32.6°C, about as warm as San Antonio, with 74 mm of rain.
Among the 498 cities listed in the United States, San Antonio ranks 30th of 498 for the warmest June highs and 189th of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; San Antonio is 5.1°C warmer than that mean.
From June to July, average highs rise by 1.5°C to 34.5°C, and monthly rainfall falls from 69 mm to 50 mm.
The annual picture
June in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
San Antonio climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.9°C6.7°C | 6.7°C | 57 | 7.2 | 10.510 h |
| February | 19.3°C8.7°C | 8.7°C | 59 | 7.5 | 11.111 h |
| March | 22.8°C12.1°C | 12.1°C | 79 | 9.2 | 12.012 h |
| April | 26.6°C15.7°C | 15.7°C | 78 | 8.5 | 12.913 h |
| May | 29.9°C19.9°C | 19.9°C | 103 | 11.2 | 13.614 h |
| June, selected | 33.0°C23.1°C | 23.1°C | 69 | 9.5 | 14.014 h |
| July | 34.5°C24.1°C | 24.1°C | 50 | 6.1 | 13.814 h |
| August | 35.1°C24.7°C | 24.7°C | 50 | 5.8 | 13.213 h |
| September | 31.6°C22.0°C | 22.0°C | 77 | 8.6 | 12.412 h |
| October | 27.3°C17.3°C | 17.3°C | 83 | 7.7 | 11.511 h |
| November | 21.5°C11.7°C | 11.7°C | 67 | 7.2 | 10.711 h |
| December | 17.5°C7.8°C | 7.8°C | 63 | 7.5 | 10.310 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
June in nearby cities
- New Braunfels in JuneUnited States · 47 kmHigh 32.6°C · Low 22.9°C · 74 mm rain
- Austin in JuneUnited States · 118 kmHigh 32.6°C · Low 23.0°C · 77 mm rain
- Round Rock in JuneUnited States · 144 kmHigh 32.4°C · Low 22.7°C · 72 mm rain
- Killeen in JuneUnited States · 202 kmHigh 32.2°C · Low 22.6°C · 71 mm rain
- Corpus Christi in JuneUnited States · 210 kmHigh 31.6°C · Low 25.0°C · 73 mm rain
- Piedras Negras in JuneMexico · 213 kmHigh 35.9°C · Low 25.0°C · 46 mm rain
- Temple in JuneUnited States · 216 kmHigh 31.9°C · Low 22.6°C · 75 mm rain
- Ciudad Acuña in JuneMexico · 238 kmHigh 35.2°C · Low 24.7°C · 38 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for San Antonio) is explained once on the San Antonio year overview and on the Sources, method and limits page.