Johnston, South Carolina
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° 54° -2° (1985) 81° (2002) 5.12" 0.6"
February 30° 58° 8° (1958) 83° (1996) 4.22" 2"
March 37° 66° 1° (1980) 89° (2007) 4.88" 0.1"
April 44° 75° 19° (2007) 94° (2002) 3.38" 0"
May 54° 82° 34° (2004) 100° (2000) 3.45" 0"
June 62° 89° 46° (2000) 106° (1958) 4.54" 0"
July 66° 92° 52° (2007) 107° (1980) 4.29" 0"
August 65° 90° 46° (1969) 110° (2007) 4.97" 0"
September 60° 84° 36° (1967) 105° (1999) 3.96" 0"
October 48° 75° 24° (2001) 93° (1986) 3.16" 0"
November 39° 66° 15° (1970) 89° (1961) 3.17" 0"
December 31° 57° 3° (1962) 81° (1998) 3.51" 0"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 58° 86° 47° (1984) 94° (1981) 0.14" NA
Jun 2 59° 86° 49° (1983) 98° (2002) 0.14" NA
Jun 3 59° 86° 50° (1983) 102° (2000) 0.14" NA
Jun 4 59° 86° 51° (1988) 100° (2002) 0.14" NA
Jun 5 59° 87° 46° (1988) 100° (1985) 0.14" NA
Jun 6 60° 87° 49° (1976) 99° (1985) 0.15" NA
Jun 7 60° 87° 46° (2000) 100° (1977) 0.15" NA
Jun 8 60° 87° 46° (2000) 97° (1990) 0.15" NA
Jun 9 60° 87° 48° (2002) 101° (1993) 0.15" NA
Jun 10 61° 88° 48° (1977) 100° (1993) 0.15" NA
Jun 11 61° 88° 51° (1997) 100° (1993) 0.15" NA
Jun 12 61° 88° 46° (1979) 102° (1993) 0.15" NA
Jun 13 61° 88° 50° (1972) 100° (2000) 0.15" NA
Jun 14 61° 88° 50° (2007) 101° (2002) 0.16" NA
Jun 15 62° 88° 53° (1979) 106° (1958) 0.16" NA
Jun 16 62° 89° 51° (2002) 99° (2000) 0.16" NA
Jun 17 62° 89° 51° (1979) 98° (1981) 0.16" NA
Jun 18 62° 89° 53° (1961) 98° (1981) 0.16" NA
Jun 19 63° 89° 54° (1961) 100° (2000) 0.16" NA
Jun 20 63° 89° 53° (2005) 100° (1998) 0.16" NA
Jun 21 63° 90° 53° (2002) 99° (1970) 0.16" NA
Jun 22 63° 90° 54° (2005) 102° (1990) 0.16" NA
Jun 23 63° 90° 55° (1997) 100° (1981) 0.15" NA
Jun 24 64° 90° 55° (1972) 101° (1996) 0.15" NA
Jun 25 64° 90° 57° (1972) 101° (2007) 0.15" NA
Jun 26 64° 90° 57° (1979) 98° (1981) 0.15" NA
Jun 27 64° 90° 57° (1979) 102° (1997) 0.15" NA
Jun 28 64° 91° 50° (1979) 102° (1998) 0.15" NA
Jun 29 64° 91° 55° (1979) 102° (1978) 0.15" NA
Jun 30 65° 91° 56° (1962) 104° (1998) 0.15" NA
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