Johnston, South Carolina
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 31° 53° -2° (1985) 81° (2002) 4.35" 0.5"
February 35° 57° 8° (1958) 83° (1996) 4.33" 0.4"
March 41° 65° 1° (1980) 89° (2007) 4.53" 0.1"
April 47° 73° 19° (2007) 94° (2002) 3.09" 0"
May 56° 82° 34° (2004) 100° (2000) 2.99" 0"
June 65° 88° 46° (2000) 106° (1958) 4.64" 0"
July 68° 91° 52° (2007) 107° (1980) 4.19" 0"
August 67° 89° 46° (1969) 110° (2007) 4.89" 0"
September 61° 83° 36° (1967) 105° (1999) 3.67" 0"
October 50° 74° 24° (2001) 93° (1986) 3.43" 0"
November 41° 65° 15° (1970) 89° (1961) 3.37" 0"
December 33° 55° 3° (1962) 81° (1998) 3.58" 0.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 51° 78° 38° (1996) 91° (1987) 0.1" 0"
May 2 52° 78° 39° (1980) 93° (2007) 0.1" 0"
May 3 52° 78° 38° (2005) 94° (2010) 0.1" 0"
May 4 52° 79° 34° (2004) 93° (2007) 0.11" 0"
May 5 53° 79° 34° (2004) 91° (1996) 0.09" 0"
May 6 53° 79° 38° (1997) 92° (1996) 0.1" 0"
May 7 53° 79° 37° (2007) 93° (1977) 0.1" 0"
May 8 54° 80° 36° (1989) 93° (1959) 0.09" 0"
May 9 54° 80° 40° (1989) 94° (2002) 0.1" 0"
May 10 54° 80° 41° (1977) 94° (2002) 0.09" 0"
May 11 55° 80° 38° (1977) 93° (2002) 0.1" 0"
May 12 55° 81° 42° (1977) 93° (1963) 0.09" 0"
May 13 55° 81° 41° (1960) 97° (2000) 0.09" 0"
May 14 56° 81° 42° (1997) 99° (2000) 0.09" 0"
May 15 56° 81° 41° (2002) 92° (1982) 0.09" 0"
May 16 56° 82° 41° (2002) 96° (1995) 0.09" 0"
May 17 57° 82° 45° (1997) 98° (2001) 0.09" 0"
May 18 57° 82° 42° (1979) 98° (1995) 0.09" 0"
May 19 57° 83° 41° (1976) 97° (1996) 0.09" 0"
May 20 58° 83° 38° (2002) 98° (1996) 0.09" 0"
May 21 58° 83° 38° (2002) 97° (1996) 0.09" 0"
May 22 58° 83° 40° (2002) 97° (1996) 0.09" 0"
May 23 59° 83° 40° (2002) 95° (2004) 0.08" 0"
May 24 59° 84° 39° (2002) 95° (1998) 0.1" 0"
May 25 59° 84° 40° (2005) 97° (1996) 0.09" 0"
May 26 60° 84° 40° (1979) 100° (2000) 0.1" 0"
May 27 60° 84° 41° (1961) 99° (1995) 0.11" 0"
May 28 60° 85° 41° (1997) 100° (2000) 0.11" 0"
May 29 61° 85° 43° (1961) 97° (2010) 0.1" 0"
May 30 61° 85° 49° (1971) 95° (1998) 0.11" 0"
May 31 61° 85° 44° (1984) 96° (2004) 0.12" 0"
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