San Antonio, TX Climate in January

Temperature for January

In San Antonio, TX during January the average high temperature is 64.0°F. The hottest day on record was January 30, 1971 when the temperature hit 88.0°F.

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

Low Temperature

During January the overnight temperature drops to an average of 40.5°F, with the lowest temperature of 0.0°F being recorded on January 31, 1949. On average there are 1 days in January when the temperature stays below freezing all day. In the worst January there were 2 days when the temperature did not make it above freezing. Overnight temperatures drop below freezing between 1 and 20 times in January.

Precipitation for January

In January the average monthly rainfall in San Antonio, TX is 1.80 inches with rain usually falling on between 11 and 12 days. 1948 was the driest January with only 0.00 inches of rain falling, and 1973 was the wettest January with 19.64 inches of rain. The wettest single day in January was 10 January 1995 when 18.28 inches of rain fell.

In January it usually snows on between 0 and 1 days. In January there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in January.