Weather By Day

December San Antonio Weather 
December San Antonio Weather
Record High: 90°F
Normal High: 64°F
Normal Low: 41°F
Record Low: 6°F
Avg Monthly Rain: 1.96"
Rec 1 Day Rain: 5.97"

San Antonio Weather In December

The highest recorded temperature in December for San Antonio for the past 69 years was 90 degrees Fahrenheit, on December 25, 1955, while the normal high temperature is 64. The lowest documented temperature for San Antonio for the past 69 years in December was 6 most recently registered on December 16, 1989, while the normal low measured temperature is 41.

United States NWS historical San Antonio December Weather data records that on December 17, 1989, the high temperature did not exceed 23 degrees Fahrenheit, the lowest high measured in San Antonio in the past 69 years. Weather Service records additionally show that on December 7, 1980, the recorded low temperature for the day did not drop below 71 degrees, the highest low measured in San Antonio in the last 69 years.

National Weather Service records indicate that the high temperature in San Antonio on December First averages 66 degrees and the high on the last day of the month averages 63 degrees. The average daily low temperature in San Antonio on December First is 43 degrees Fahrenheit and the average low on the last day of December is 41 degrees.

San Antonio usually receives an average of 1.96 inches of rain during December. The most precipitation measured in a single day, as indicated by December San Antonio Weather data, was 5.97 inches on December 21, 1991.