- Clothing
- Light, breathable clothing. Apply sunscreen if outdoors.
Tomorrow's Weather Forecast - San Antonio
Tomorrow's weather in San Antonio. high 38°C (100°F), low 25°C (77°F). Overcast.
Tomorrow’s Outlook
Tomorrow brings a similar temperature to today. A warm, sunny day is expected, with rain chances staying low throughout. Humidity sits at a moderate 60%, so the air shouldn't feel unusually damp or dry. A light breeze near 22 km/h is expected. Sunrise is at 7:17 AM and sunset at 7:42 PM, for about 12h 25m of daylight.
- Tomorrow
- 38°/ 25°
- Today38° / 25°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon27°
- Rain probability
- 4%
- Wind speed
- 13 km/h
AfternoonNoon – 6 PM37°
- Rain probability
- 1%
- Wind speed
- 17 km/h
Evening6 PM – Midn33°
- Rain probability
- 4%
- Wind speed
- 22 km/h
NightMidn – 6 AM27°
- Rain probability
- 2%
- Wind speed
- 17 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Great for outdoor activities. Stay hydrated and seek shade.
- Travel
- Standard travel conditions expected.
Sunrise & Sunset
Sunrise
Dawn 6:47 AMTotal Daylight
Full day forecastSolar noon 1:29 PM
Sunset
Dusk 8:12 PMvs today-2 min daylight
Sunrise shift1 min later
Sunset shift1 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
San Antonio is forecast to reach a high of 38°C tomorrow, with an overnight low around 25°C. That's 5° above the long-term average high of 33°C for this time of year. It continues a recent pattern — 27 of the last 28 days with published data have run warmer than normal. Expect little chance of rain (4% probability) and moderate breezes averaging 22 km/h. Air quality is currently good (AQI 46), with no notable outdoor health concerns.
Today vs Normal
38°C+5° above normal
The long-term average high for today is 33°C.
27 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air Quality
Good
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.