San Antonio, TX Climate in August

Temperature for August

In San Antonio, TX during August the average high temperature is 95.4°F. The hottest day on record was August 29, 2011 when the temperature hit 109.9°F.

San Antonio, TX daily average and extreme temperature range for August

Low Temperature

During August the overnight temperature drops to an average of 74.0°F, with the lowest temperature of 61.0°F being recorded on August 25, 1966. In August it has never frozen overnight.

Precipitation for August

In August the average monthly rainfall in San Antonio, TX is 1.36 inches with rain usually falling on between 5 and 6 days. 1947 was the driest August with only 0.00 inches of rain falling, and 1974 was the wettest August with 14.81 inches of rain. The wettest single day in August was 17 August 2007 when 5.77 inches of rain fell.

In August it usually snows on between 0 and 1 days. Tornados are reported on 0 and 1 days in August. There are thunderstorms on between 3 and 4 days in August.