December weather in San Antonio, FL
The average temperature in San Antonio in December is 62.1°F (52.2°F–72.0°F). Average precipitation: 2.53 inches.
December is a winter month in San Antonio, and is cooler than the annual average of 71.9°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 10h 12m. For travel, December is one of the best months of the year to visit.
Avg High
72.0°F
Avg Low
52.2°F
Precipitation
2.53 in
Daylight
10h 12m
December records in San Antonio
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 88.0°F (1982) | 30.9°F (1957) | 1.91 in (1925) |
| December 2 | 88.0°F (1991) | 32.0°F (1910) | 1.70 in (1898) |
| December 3 | 86.0°F (1978) | 30.9°F (1910) | 0.96 in (2018) |
| December 4 | 86.0°F (1964) | 30.0°F (1903) | 1.72 in (1997) |
| December 5 | 86.0°F (1928) | 32.0°F (1907) | 2.70 in (1964) |
| December 6 | 84.9°F (1936) | 30.0°F (1895) | 1.11 in (2002) |
| December 7 | 87.1°F (1978) | 25.0°F (1937) | 4.60 in (2025) |
| December 8 | 87.1°F (1978) | 28.9°F (1937) | 1.17 in (2005) |
| December 9 | 84.9°F (1924) | 32.0°F (1934) | 3.34 in (1921) |
| December 10 | 87.1°F (1961) | 28.9°F (1917) | 2.12 in (1969) |
| December 11 | 84.9°F (1947) | 28.9°F (1934) | 2.57 in (1997) |
| December 12 | 84.9°F (1985) | 21.9°F (1934) | 1.99 in (1983) |
| December 13 | 84.9°F (1948) | 18.0°F (1962) | 2.77 in (1997) |
| December 14 | 87.1°F (2001) | 25.0°F (1962) | 2.14 in (1985) |
| December 15 | 87.1°F (1971) | 30.0°F (1944) | 2.64 in (1936) |
| December 16 | 86.0°F (1940) | 26.1°F (1968) | 1.08 in (1972) |
| December 17 | 84.9°F (1931) | 28.0°F (1968) | 2.37 in (2023) |
| December 18 | 84.9°F (1967) | 32.0°F (1988) | 0.90 in (1961) |
| December 19 | 87.1°F (1990) | 27.0°F (1975) | 1.69 in (1945) |
| December 20 | 86.0°F (1990) | 26.1°F (2000) | 3.52 in (2018) |
| December 21 | 84.9°F (1990) | 27.0°F (1927) | 2.83 in (1916) |
| December 22 | 84.9°F (1990) | 30.0°F (1960) | 2.36 in (1935) |
| December 23 | 84.0°F (1956) | 26.1°F (1989) | 4.25 in (1900) |
| December 24 | 84.0°F (1924) | 19.9°F (1989) | 1.24 in (1978) |
| December 25 | 84.9°F (1962) | 19.9°F (1983) | 1.63 in (1913) |
| December 26 | 86.0°F (1916) | 19.9°F (1983) | 2.34 in (1981) |
| December 27 | 84.0°F (1942) | 25.0°F (1935) | 4.39 in (1981) |
| December 28 | 84.0°F (2007) | 26.1°F (1902) | 1.73 in (1978) |
| December 29 | 84.9°F (1946) | 28.9°F (2010) | 2.84 in (1983) |
| December 30 | 87.1°F (1990) | 23.0°F (1909) | 1.50 in (1950) |
| December 31 | 84.9°F (1923) | 21.9°F (1909) | 1.41 in (1986) |