Gretna, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 22° -37° (1972) 56° (1964) 0.51" 7.6"
February 27° -34° (1994) 69° (1958) 0.66" 8.1"
March 18° 39° -24° (1962) 80° (1963) 1.18" 7.4"
April 31° 56° 2° (2007) 94° (1962) 1.76" 4.7"
May 43° 67° 17° (2005) 102° (1969) 2.85" 0.1"
June 54° 76° 29° (1951) 107° (2002) 3.55" 0"
July 59° 83° 38° (1971) 112° (2006) 3.28" 0"
August 56° 82° 33° (2004) 108° (1959) 2.34" 0"
September 46° 72° 21° (1951) 102° (1948) 2.01" 0"
October 33° 57° -2° (1991) 93° (1970) 1.78" 1.5"
November 20° 39° -19° (1959) 77° (1990) 0.73" 6.8"
December 25° -35° (1967) 62° (1998) 0.52" 8.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 57° 81° 40° (1959) 94° (2002) 0.11" 0"
Jul 2 57° 81° 45° (1994) 101° (1949) 0.11" 0"
Jul 3 57° 81° 38° (1967) 109° (1949) 0.11" 0"
Jul 4 58° 82° 44° (1967) 105° (1949) 0.11" 0"
Jul 5 58° 82° 46° (1950) 95° (1955) 0.12" 0"
Jul 6 58° 82° 47° (1958) 98° (1970) 0.12" 0"
Jul 7 58° 82° 45° (1958) 96° (1959) 0.11" 0"
Jul 8 58° 82° 45° (1953) 105° (2007) 0.11" 0"
Jul 9 58° 83° 45° (1994) 105° (1954) 0.11" 0"
Jul 10 58° 83° 47° (1994) 106° (1966) 0.1" 0"
Jul 11 58° 83° 47° (1951) 105° (1973) 0.11" 0"
Jul 12 59° 83° 48° (1951) 109° (1973) 0.12" 0"
Jul 13 59° 83° 41° (1950) 96° (2006) 0.11" 0"
Jul 14 59° 83° 44° (1967) 95° (2006) 0.12" 0"
Jul 15 59° 84° 47° (1993) 101° (2006) 0.11" 0"
Jul 16 59° 84° 45° (1962) 112° (2006) 0.11" 0"
Jul 17 59° 84° 47° (2009) 109° (2006) 0.11" 0"
Jul 18 59° 84° 48° (2000) 100° (1970) 0.1" 0"
Jul 19 59° 84° 46° (1971) 99° (1998) 0.11" 0"
Jul 20 59° 84° 45° (1992) 100° (1960) 0.11" 0"
Jul 21 59° 84° 47° (1992) 100° (1960) 0.1" 0"
Jul 22 59° 84° 43° (1953) 102° (1965) 0.11" 0"
Jul 23 59° 84° 46° (1952) 102° (2007) 0.09" 0"
Jul 24 59° 84° 47° (1962) 105° (1952) 0.1" 0"
Jul 25 59° 84° 48° (1991) 101° (1952) 0.1" 0"
Jul 26 59° 84° 38° (1971) 103° (1954) 0.09" 0"
Jul 27 59° 84° 47° (1994) 102° (1959) 0.09" 0"
Jul 28 59° 84° 42° (1971) 100° (1959) 0.1" 0"
Jul 29 59° 84° 42° (1971) 103° (2006) 0.09" 0"
Jul 30 59° 84° 38° (1971) 101° (2006) 0.1" 0"
Jul 31 59° 84° 38° (1971) 107° (2006) 0.09" 0"
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