Lewisville, Texas
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 34° 55° -1° (1918) 95° (1911) 2.24" 0"
February 38° 59° 3° (1905) 95° (1996) 2.91" 0"
March 45° 66° 13° (1980) 100° (1916) 3.62" 0"
April 53° 75° 29° (1989) 101° (2006) 3.16" 0"
May 63° 82° 33° (1903) 105° (1911) 4.9" 0"
June 70° 90° 47° (1903) 109° (1980) 3.92" 0"
July 74° 94° 56° (1972) 112° (1912) 2.38" 0"
August 74° 95° 54° (1915) 115° (1909) 1.84" 0"
September 66° 88° 38° (1995) 109° (1998) 3.37" 0"
October 55° 78° 22° (1993) 102° (1904) 4.02" 0"
November 45° 66° 17° (1976) 89° (2003) 2.94" 0"
December 35° 56° -1° (1989) 89° (1955) 2.69" 0.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 58° 78° 33° (1903) 91° (1912) 0.15" 0"
May 2 58° 79° 44° (1994) 96° (2002) 0.15" 0"
May 3 58° 79° 41° (1954) 90° (1998) 0.15" 0"
May 4 59° 79° 40° (1907) 92° (1906) 0.16" 0"
May 5 59° 79° 44° (1978) 91° (1914) 0.16" 0"
May 6 59° 79° 42° (1991) 95° (1984) 0.16" 0"
May 7 60° 80° 43° (1992) 99° (1998) 0.17" 0"
May 8 60° 80° 45° (1982) 94° (1955) 0.17" 0"
May 9 61° 80° 46° (1980) 92° (1901) 0.16" 0"
May 10 61° 80° 48° (1990) 97° (1901) 0.16" 0"
May 11 61° 81° 43° (1981) 95° (1910) 0.16" 0"
May 12 62° 81° 42° (1960) 98° (1967) 0.16" 0"
May 13 62° 81° 44° (1997) 95° (1978) 0.16" 0"
May 14 62° 81° 45° (1971) 93° (1956) 0.16" 0"
May 15 63° 82° 43° (1907) 95° (1911) 0.16" 0"
May 16 63° 82° 47° (1983) 93° (1993) 0.16" 0"
May 17 63° 82° 49° (1983) 96° (1913) 0.16" 0"
May 18 64° 83° 49° (1976) 97° (1966) 0.15" 0"
May 19 64° 83° 47° (2002) 95° (1956) 0.15" 0"
May 20 64° 83° 49° (1981) 99° (2008) 0.15" 0"
May 21 64° 83° 50° (1981) 96° (1996) 0.15" 0"
May 22 65° 84° 47° (2001) 99° (2005) 0.16" 0"
May 23 65° 84° 50° (1917) 99° (2005) 0.16" 0"
May 24 65° 84° 53° (1983) 98° (1996) 0.16" 0"
May 25 66° 84° 52° (1979) 99° (1996) 0.16" 0"
May 26 66° 85° 48° (1901) 97° (1913) 0.15" 0"
May 27 66° 85° 47° (1901) 96° (1912) 0.16" 0"
May 28 66° 85° 52° (1907) 100° (1996) 0.16" 0"
May 29 67° 85° 51° (1984) 97° (1916) 0.16" 0"
May 30 67° 86° 50° (1984) 101° (1911) 0.16" 0"
May 31 67° 86° 49° (1992) 105° (1911) 0.16" 0"
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