San Antonio weather by month › September
San Antonio in September: weather and what to expect
It’s fine, but not the best. March is more pleasant.
September weather in San Antonio
Daytime high91°F 33°C
Night low69°F 21°C
Rain3.5 in 90 mm
AirHumid
SunSunny
In September, San Antonio averages highs of 91°F (33°C) and lows of 69°F (21°C), with 3.5 in (90 mm) of rain. The air feels humid and the sun is sunny. 1991–2020 averages, not a forecast.
Pack: light clothes and sun protection.
Places with the same weather in September
Match out of 100 for September, one city per country.
- Islamabad Pakistan · 91°F highs94
- Barquisimeto Venezuela · 89°F highs91
- Yangshuo China · 87°F highs89
- Coimbatore India · 89°F highs89
- Santiago de los Caballeros Dominican Republic · 93°F highs89
- Kano Nigeria · 91°F highs88
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