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
Dec 1 35° 61° 16° (1979) 79° (1970) 0.1" NA
Dec 2 35° 60° 20° (2002) 79° (1991) 0.1" NA
Dec 3 34° 60° 17° (1979) 80° (1991) 0.1" NA
Dec 4 34° 60° 18° (1979) 77° (1982) 0.1" NA
Dec 5 34° 59° 19° (1969) 80° (1978) 0.1" NA
Dec 6 33° 59° 20° (1969) 78° (1998) 0.1" NA
Dec 7 33° 59° 18° (1977) 81° (1998) 0.1" NA
Dec 8 33° 58° 19° (1984) 80° (1998) 0.1" NA
Dec 9 33° 58° 10° (2006) 80° (1978) 0.1" NA
Dec 10 32° 58° 12° (2006) 78° (2007) 0.1" NA
Dec 11 32° 58° 17° (1981) 77° (2007) 0.1" NA
Dec 12 32° 57° 9° (1958) 77° (2007) 0.1" NA
Dec 13 32° 57° 3° (1962) 78° (1971) 0.11" NA
Dec 14 31° 57° 5° (1962) 77° (1971) 0.11" NA
Dec 15 31° 56° 13° (2004) 75° (1984) 0.11" NA
Dec 16 31° 56° 12° (2004) 75° (1995) 0.11" NA
Dec 17 31° 56° 12° (2004) 78° (1971) 0.11" NA
Dec 18 31° 56° 16° (1972) 75° (1984) 0.11" NA
Dec 19 30° 56° 13° (1975) 77° (1984) 0.11" NA
Dec 20 30° 55° 12° (2004) 78° (1967) 0.12" NA
Dec 21 30° 55° 11° (2004) 78° (1967) 0.12" NA
Dec 22 30° 55° 12° (1960) 77° (1998) 0.12" NA
Dec 23 30° 55° 13° (1989) 69° (1981) 0.12" NA
Dec 24 30° 55° 12° (1989) 76° (1990) 0.12" NA
Dec 25 30° 55° 5° (1983) 75° (1964) 0.13" NA
Dec 26 30° 54° 5° (1983) 75° (1984) 0.13" NA
Dec 27 30° 54° 7° (1983) 75° (1964) 0.13" NA
Dec 28 29° 54° 16° (2004) 73° (1971) 0.13" NA
Dec 29 29° 54° 15° (2004) 78° (1984) 0.14" NA
Dec 30 29° 54° 20° (2000) 78° (1984) 0.14" NA
Dec 31 29° 54° 15° (1983) 77° (1996) 0.14" NA
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