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
May 1 16.1° 28.3° 7° (1903) 37° (1929) 0.12" NA
May 2 16.7° 28.3° 8° (1976) 37° (1964) 0.13" NA
May 3 16.7° 28.9° 8° (1970) 37° (1984) 0.13" NA
May 4 16.7° 28.9° 7° (1954) 37° (1984) 0.13" NA
May 5 17.2° 28.9° 7° (1944) 37° (1984) 0.13" NA
May 6 17.2° 28.9° 8° (1970) 37° (1984) 0.14" NA
May 7 17.2° 28.9° 7° (1917) 38° (1998) 0.14" NA
May 8 17.2° 29.4° 8° (1982) 39° (1927) 0.14" NA
May 9 17.8° 29.4° 6° (1984) 36° (1967) 0.14" NA
May 10 17.8° 29.4° 9° (1969) 36° (2006) 0.15" NA
May 11 17.8° 29.4° 8° (1981) 38° (1967) 0.15" NA
May 12 18.3° 29.4° 8° (1952) 38° (1967) 0.15" NA
May 13 18.3° 29.4° 9° (1960) 37° (1967) 0.15" NA
May 14 18.3° 30° 9° (1971) 36° (2003) 0.15" NA
May 15 18.3° 30° 11° (1926) 36° (2003) 0.15" NA
May 16 18.9° 30° 8° (1967) 36° (2003) 0.16" NA
May 17 18.9° 30° 9° (1945) 36° (2003) 0.16" NA
May 18 18.9° 30° 11° (1945) 36° (1989) 0.16" NA
May 19 18.9° 30.6° 11° (1986) 38° (1989) 0.16" NA
May 20 19.4° 30.6° 9° (2002) 38° (1996) 0.16" NA
May 21 19.4° 30.6° 11° (1892) 37° (1939) 0.16" NA
May 22 19.4° 30.6° 10° (1892) 38° (1989) 0.16" NA
May 23 19.4° 30.6° 12° (1892) 37° (1996) 0.16" NA
May 24 20° 30.6° 13° (1967) 38° (1989) 0.16" NA
May 25 20° 31.1° 14° (1967) 39° (1989) 0.16" NA
May 26 20° 31.1° 12° (1947) 38° (1989) 0.17" NA
May 27 20° 31.1° 11° (1901) 37° (2006) 0.17" NA
May 28 20.6° 31.1° 13° (1976) 39° (1927) 0.17" NA
May 29 20.6° 31.1° 14° (1888) 39° (1927) 0.17" NA
May 30 20.6° 31.7° 13° (1992) 37° (2003) 0.17" NA
May 31 20.6° 31.7° 11° (1984) 40° (2004) 0.17" NA
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