San Antonio, TX weather in December 1999

Temperature for December 1999

In December 1999 the average high temperature in San Antonio, TX was 69.3°F, and this was 3.6°F warmer than the average of 65.7°F. The hottest day in December 1999 was 3 December when the temperature reached 84.2°F. Overnight the average temperature in December is 44.7°F and in 1999 the average overnight temperature was 1.6°F cooler at 43.0°F.

Precipitation for December 1999

In December the average monthly rainfall in San Antonio, TX is 0.82 inches with rain usually falling on 10 days. In December 1999 there was a total of 0.30 inches of rain, that fell on 8 days.