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
Sep 1 22.2° 33.9° 16° (1915) 39° (2000) 0.09" NA
Sep 2 22.2° 33.9° 16° (1915) 40° (2000) 0.09" NA
Sep 3 22.2° 33.9° 16° (1974) 40° (2000) 0.09" NA
Sep 4 21.7° 33.3° 13° (1974) 43° (2000) 0.09" NA
Sep 5 21.7° 33.3° 12° (1974) 44° (2000) 0.09" NA
Sep 6 21.7° 33.3° 12° (1974) 39° (2000) 0.09" NA
Sep 7 21.7° 33.3° 13° (1974) 38° (1994) 0.09" NA
Sep 8 21.7° 33.3° 15° (1918) 38° (1993) 0.09" NA
Sep 9 21.1° 32.8° 14° (1957) 39° (1893) 0.09" NA
Sep 10 21.1° 32.8° 16° (1907) 38° (1940) 0.09" NA
Sep 11 21.1° 32.8° 13° (1968) 39° (1893) 0.09" NA
Sep 12 21.1° 32.8° 13° (1968) 39° (1893) 0.1" NA
Sep 13 21.1° 32.8° 13° (1892) 38° (1912) 0.1" NA
Sep 14 20.6° 32.2° 11° (1945) 37° (1965) 0.1" NA
Sep 15 20.6° 32.2° 14° (1989) 37° (1988) 0.1" NA
Sep 16 20.6° 32.2° 13° (1945) 37° (1954) 0.1" NA
Sep 17 20.6° 32.2° 13° (1945) 37° (1997) 0.1" NA
Sep 18 20° 32.2° 10° (1903) 36° (1997) 0.1" NA
Sep 19 20° 31.7° 8° (1981) 37° (1995) 0.1" NA
Sep 20 20° 31.7° 11° (1981) 38° (1947) 0.1" NA
Sep 21 20° 31.7° 12° (1913) 38° (1909) 0.1" NA
Sep 22 19.4° 31.7° 8° (1983) 38° (1926) 0.11" NA
Sep 23 19.4° 31.1° 9° (1999) 37° (2005) 0.11" NA
Sep 24 19.4° 31.1° 11° (1947) 39° (2005) 0.11" NA
Sep 25 18.9° 31.1° 10° (1989) 41° (2005) 0.11" NA
Sep 26 18.9° 31.1° 8° (1975) 39° (2005) 0.11" NA
Sep 27 18.9° 30.6° 5° (1942) 39° (2005) 0.11" NA
Sep 28 18.9° 30.6° 8° (1967) 40° (2005) 0.11" NA
Sep 29 18.3° 30.6° 8° (1908) 36° (1954) 0.12" NA
Sep 30 18.3° 30.6° 8° (1890) 35° (1977) 0.12" NA
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