San Antonio Weather Forecast
San Antonio weather: 91°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for San Antonio
Derived from the current forecast window - not an official warning.
Peak gusts of 28 mph and 3 thunderstorm days in the next 16 days.
Wettest single day forecast at 0,2 in, 0,6 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
Active alerts for San Antonio
Heat Advisory issued August 25 at 3:02PM CDT until August 26 at 7:00PM CDT by NWS Austin/San Antonio TX
Issued by NWS Austin/San Antonio TX
16-day forecast for San Antonio
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Tue, Aug 25 | 🌤️ Mainly clear | 101° / 75° | 0% | 12 mph | 8 |
| Wed, Aug 26 | ☁️ Overcast | 102° / 78° | 2% | 10 mph | 8 |
| Thu, Aug 27 | 🌦️ Light drizzle | 99° / 78° | 26% · 0,0 in | 15 mph | 8 |
| Fri, Aug 28 | 🌦️ Light drizzle | 101° / 78° | 26% · 0,0 in | 15 mph | 8 |
| Sat, Aug 29 | ☁️ Overcast | 102° / 77° | 10% | 16 mph | 8 |
| Sun, Aug 30 | 🌤️ Mainly clear | 101° / 76° | 1% | 16 mph | 8 |
| Mon, Aug 31 | 🌦️ Light drizzle | 102° / 76° | 2% · 0,0 in | 15 mph | 8 |
| Tue, Sep 1 | ⛈️ Thunderstorm | 101° / 79° | 5% · 0,0 in | 19 mph | 9 |
| Wed, Sep 2 | 🌦️ Drizzle | 98° / 76° | 5% · 0,1 in | 17 mph | 7 |
| Thu, Sep 3 | ⛈️ Thunderstorm | 97° / 77° | 4% · 0,2 in | 12 mph | 7 |
| Fri, Sep 4 | 🌦️ Light drizzle | 95° / 75° | 5% · 0,0 in | 14 mph | 7 |
| Sat, Sep 5 | ☁️ Overcast | 100° / 76° | 14% | 18 mph | 8 |
| Sun, Sep 6 | ⛈️ Thunderstorm | 94° / 78° | 16% · 0,1 in | 14 mph | 6 |
| Mon, Sep 7 | 🌦️ Light drizzle | 101° / 78° | 18% · 0,0 in | 18 mph | 8 |
| Tue, Sep 8 | 🌦️ Light drizzle | 100° / 77° | 23% · 0,0 in | 13 mph | 8 |
| Wed, Sep 9 | ⛅ Partly cloudy | 100° / 76° | 14% | 13 mph | 8 |
What this means for San Antonio
Today is about average for August. The forecast high of 101°F is in line with the 99°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 69°F.
See the San Antonio forecast by time range
San Antonio weather - more answers
Explore San Antonio
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is San Antonio?
San Antonio is a city in Texas. Its coordinates are 29.4241, -98.4936. It lies in North America.
What is the weather like in San Antonio right now?
It is currently 91°F (33°C) with clear. Humidity is 36% and wind is 8 mph.
When is the best time to visit San Antonio?
February, March, August, September, October, November and December offer the most comfortable conditions in San Antonio, which has a temperate climate. April, May and July are usually the hardest months for outdoor plans.
What time zone is San Antonio in?
San Antonio observes America/Chicago (UTC-05:00). The local time is 11:04 PM.
How many people live in San Antonio?
San Antonio has a population of approximately 1.5 million.
What is the nearest airport to San Antonio?
The closest airports are Austin-Bergstrom International Airport (AUS), 73 mi away, George Bush Intercontinental Airport (IAH), 193 mi away and Dallas/Fort Worth International Airport (DFW), 255 mi away.
What are the top things to do in San Antonio?
Popular options include Enchanted Rock State Natural Area.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 25, 2026 at 11:04 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
