San Antonio - Recent December Temperatures and Rainfall





The numbers here describe what the December weather in San Antonio, Texas was like for every year since 2010. A series of tables gives December data by year for temperature precipitation and snowfall.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many hot or cold days occurred each December. Then there's information on how much rain and snow actually landed this month during recent years, as well as how often San Antonio had wet or snowy weather.

The climate data come from weather measurements made at San Antonio's International Airport.

Temperature Weather iconTemperature

December temperature averages by year in San Antonio
High °F Low °F Year High °C Low °C
74 54 2021 23 12
68 40 2020 20 5
69 42 2019 20 6
64 43 2018 18 6
63 43 2017 17 6
64 48 2016 18 9
70 46 2015 21 8
65 49 2014 18 9
63 42 2013 17 5
69 45 2012 20 7
63 45 2011 17 7
66 41 2010 19 5
Number of days in December when the temperature in San Antonio dropped to 32 or below, or rose to at least 70 degrees Fahrenheit
32 °F
0 °C
Year 70 °F
21 °C
0 2021 25
2 2020 17
2 2019 15
0 2018 9
3 2017 10
2 2016 10
0 2015 19
2 2014 12
9 2013 9
7 2012 19
3 2011 12
6 2010 11

Rainy Weather iconPrecipitation

This table gives the total precipitation that fell on San Antonio during December in each year from 2010. The number of days with precipitation counts the days when rainfall or snowfall (when melted) amounted to 0.01 inches (0.3 millimeters) or more.

Total precipitation for December in San Antonio
Days Year Inches Milli­metres
2 2021 0.9 23
4 2020 0.6 15
2 2019 0.5 13
8 2018 2.4 60
6 2017 4.0 103
10 2016 6.2 158
3 2015 1.5 38
8 2014 1.2 31
5 2013 0.6 14
7 2012 0.4 9
16 2011 2.8 72
3 2010 0.6 16

Snowy Weather iconSnow

Amount of December snowfall in San Antonio and number of days when new snow totalled at least 1 inch (2.5 centimetres)
Days Year Inches Centi­metres
0 2021 0.0 0
0 2020 0.0 0
0 2019 0.0 0
0 2018 0.0 0
1 2017 1.9 5
0 2016 0.0 0
0 2015 0.0 0
0 2014 0.0 0
0 2013 0.0 0
0 2012 0.0 0
0 2011 0.0 0
0 2010 0.0 0
Reference

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

San Antonio - Recent Years
San Antonio - Extremes
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