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
Jun 1 51° 76° 33° (1964) 89° (1966) 0.11" NA
Jun 2 51° 77° 30° (1969) 93° (1976) 0.11" NA
Jun 3 51° 77° 31° (1951) 101° (1968) 0.11" NA
Jun 4 52° 77° 34° (1950) 93° (1976) 0.11" NA
Jun 5 52° 77° 38° (1983) 98° (1969) 0.11" NA
Jun 6 52° 78° 38° (1983) 103° (1950) 0.11" NA
Jun 7 53° 78° 39° (1983) 103° (1988) 0.11" NA
Jun 8 53° 78° 37° (1965) 102° (2000) 0.11" NA
Jun 9 53° 79° 39° (1955) 99° (1976) 0.11" NA
Jun 10 53° 79° 42° (1975) 103° (1976) 0.1" NA
Jun 11 54° 79° 42° (1958) 100° (1956) 0.1" NA
Jun 12 54° 80° 38° (1985) 100° (1952) 0.1" NA
Jun 13 54° 80° 32° (1969) 107° (1979) 0.1" NA
Jun 14 55° 80° 35° (1969) 104° (1979) 0.1" NA
Jun 15 55° 81° 40° (1983) 105° (1952) 0.1" NA
Jun 16 55° 81° 35° (1974) 99° (1989) 0.1" NA
Jun 17 55° 81° 40° (2000) 95° (1986) 0.1" NA
Jun 18 56° 82° 40° (1949) 103° (1988) 0.1" NA
Jun 19 56° 82° 41° (1985) 103° (1989) 0.1" NA
Jun 20 56° 82° 36° (1972) 107° (1974) 0.1" NA
Jun 21 56° 82° 41° (1972) 107° (1988) 0.1" NA
Jun 22 57° 83° 46° (1960) 99° (1987) 0.1" NA
Jun 23 57° 83° 44° (1989) 103° (1954) 0.1" NA
Jun 24 57° 83° 44° (1955) 106° (1988) 0.1" NA
Jun 25 57° 84° 34° (1958) 100° (2001) 0.1" NA
Jun 26 57° 84° 40° (1968) 102° (1961) 0.1" NA
Jun 27 58° 84° 47° (1976) 106° (1970) 0.1" NA
Jun 28 58° 84° 40° (1951) 112° (2002) 0.1" NA
Jun 29 58° 85° 38° (1985) 113° (2002) 0.1" NA
Jun 30 58° 85° 41° (1995) 106° (2002) 0.1" NA
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