Hartley, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 29° -33° (1966) 69° (1987) 0.41" 6.1"
February 15° 36° -37° (1994) 73° (1992) 0.56" 8"
March 24° 46° -29° (1998) 83° (2007) 1.23" 11"
April 35° 60° 2° (1975) 96° (1992) 1.95" 6.4"
May 45° 71° 12° (1950) 103° (1992) 3.43" 0.5"
June 55° 81° 30° (1969) 113° (2002) 3.09" 0.1"
July 60° 88° 38° (1959) 116° (2006) 2.92" 0"
August 59° 88° 38° (1988) 110° (1988) 1.97" 0"
September 48° 77° 20° (1951) 107° (1960) 1.32" 0.1"
October 36° 63° -5° (1991) 98° (1963) 1.71" 2"
November 22° 44° -25° (1959) 85° (1999) 0.6" 6"
December 12° 32° -33° (1990) 70° (1998) 0.44" 8.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 58° 85° 38° (1959) 104° (1974) 0.1" NA
Jul 2 59° 86° 41° (1968) 104° (1990) 0.1" NA
Jul 3 59° 86° 42° (1972) 105° (1961) 0.1" NA
Jul 4 59° 86° 41° (1972) 110° (1949) 0.1" NA
Jul 5 59° 86° 46° (1972) 104° (1973) 0.1" NA
Jul 6 59° 87° 47° (1958) 108° (1973) 0.1" NA
Jul 7 59° 87° 47° (1958) 110° (2007) 0.1" NA
Jul 8 59° 87° 45° (1996) 108° (1989) 0.1" NA
Jul 9 60° 87° 45° (1996) 107° (2005) 0.1" NA
Jul 10 60° 87° 47° (1999) 108° (1980) 0.1" NA
Jul 11 60° 88° 48° (1959) 108° (1973) 0.1" NA
Jul 12 60° 88° 47° (1975) 106° (2006) 0.1" NA
Jul 13 60° 88° 42° (1950) 109° (2003) 0.1" NA
Jul 14 60° 88° 42° (1950) 106° (2006) 0.1" NA
Jul 15 60° 88° 46° (1985) 116° (2006) 0.1" NA
Jul 16 61° 88° 45° (1976) 110° (2006) 0.1" NA
Jul 17 61° 89° 50° (1976) 106° (1961) 0.09" NA
Jul 18 61° 89° 44° (1950) 110° (1977) 0.09" NA
Jul 19 61° 89° 49° (1971) 108° (1983) 0.09" NA
Jul 20 61° 89° 48° (1988) 108° (1960) 0.09" NA
Jul 21 61° 89° 48° (1973) 109° (2007) 0.09" NA
Jul 22 61° 89° 45° (1961) 107° (1964) 0.09" NA
Jul 23 61° 89° 43° (1954) 108° (2007) 0.09" NA
Jul 24 61° 89° 48° (1988) 115° (1952) 0.09" NA
Jul 25 61° 89° 48° (1950) 107° (2003) 0.09" NA
Jul 26 61° 89° 45° (1994) 104° (1952) 0.09" NA
Jul 27 61° 89° 46° (1949) 105° (1988) 0.09" NA
Jul 28 61° 90° 42° (1971) 111° (2006) 0.09" NA
Jul 29 61° 90° 46° (1971) 111° (2006) 0.08" NA
Jul 30 61° 90° 40° (1971) 111° (2006) 0.08" NA
Jul 31 61° 90° 45° (1971) 107° (1955) 0.08" NA
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