San Antonio, Texas
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° -17.8° (1949) 31.7° (1971) 1.66" 0.7"
February 19° -15.6° (1899) 37.8° (1996) 1.75" 0.1"
March 10° 23° -7.2° (2002) 37.8° (1991) 1.89" 0"
April 14° 27° -0.6° (1987) 38.3° (1996) 2.6" 0"
May 19° 30° 6.1° (1984) 40° (2004) 4.72" 0"
June 22° 33° 8.9° (1919) 41.7° (1998) 4.3" 0"
July 23° 35° 15.6° (1905) 41.1° (1989) 2.03" 0"
August 23° 35° 13.9° (1891) 42.2° (1986) 2.57" 0"
September 21° 32° 5° (1942) 43.9° (2000) 3" 0"
October 15° 28° -2.8° (1993) 37.2° (1991) 3.86" 0"
November 22° -6.1° (1976) 34.4° (1988) 2.58" 0"
December 18° -14.4° (1989) 32.2° (1955) 1.96" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 6.7° 19.4° -3° (1976) 28° (1894) 0.07" NA
Dec 2 6.7° 19.4° -2° (1975) 30° (2007) 0.07" NA
Dec 3 6.1° 18.9° -3° (1929) 30° (1942) 0.07" NA
Dec 4 6.1° 18.9° -3° (1886) 29° (1954) 0.07" NA
Dec 5 6.1° 18.9° -8° (1886) 29° (1977) 0.07" NA
Dec 6 6.1° 18.9° -7° (1950) 28° (1951) 0.07" NA
Dec 7 5.6° 18.3° -10° (1950) 28° (1994) 0.07" NA
Dec 8 5.6° 18.3° -4° (1917) 29° (1894) 0.07" NA
Dec 9 5.6° 18.3° -5° (1978) 28° (1939) 0.07" NA
Dec 10 5.6° 18.3° -8° (1978) 29° (1939) 0.07" NA
Dec 11 18.3° -6° (1966) 31° (1987) 0.06" NA
Dec 12 18.3° -8° (1957) 29° (1996) 0.06" NA
Dec 13 17.8° -7° (1966) 28° (1921) 0.06" NA
Dec 14 17.8° -6° (1966) 29° (1908) 0.06" NA
Dec 15 17.8° -9° (1901) 29° (1950) 0.06" NA
Dec 16 17.8° -8° (1989) 27° (1980) 0.06" NA
Dec 17 4.4° 17.8° -7° (1972) 28° (1990) 0.06" NA
Dec 18 4.4° 17.2° -6° (1996) 27° (2006) 0.06" NA
Dec 19 4.4° 17.2° -8° (1996) 27° (1977) 0.06" NA
Dec 20 4.4° 17.2° -6° (1924) 29° (1951) 0.06" NA
Dec 21 4.4° 17.2° -8° (1973) 28° (1990) 0.06" NA
Dec 22 4.4° 17.2° -11° (1989) 29° (1981) 0.06" NA
Dec 23 3.9° 17.2° -14° (1989) 28° (1972) 0.06" NA
Dec 24 3.9° 17.2° -9° (1983) 28° (1964) 0.06" NA
Dec 25 3.9° 17.2° -12° (1983) 32° (1955) 0.06" NA
Dec 26 3.9° 16.7° -9° (1983) 28° (1942) 0.06" NA
Dec 27 3.9° 16.7° -6° (1892) 28° (2005) 0.06" NA
Dec 28 3.9° 16.7° -7° (1925) 27° (1921) 0.06" NA
Dec 29 3.9° 16.7° -9° (1983) 28° (1951) 0.06" NA
Dec 30 3.9° 16.7° -13° (1983) 28° (1951) 0.06" NA
Dec 31 3.9° 16.7° -11° (1983) 28° (1915) 0.06" NA
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