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
Jan 1 29° -24° (1952) 63° (1998) 0.02" NA
Jan 2 29° -21° (1968) 60° (1955) 0.02" NA
Jan 3 29° -26° (1968) 62° (1962) 0.02" NA
Jan 4 29° -24° (1972) 55° (1987) 0.02" NA
Jan 5 29° -26° (1988) 52° (1983) 0.01" NA
Jan 6 29° -22° (1988) 56° (1954) 0.01" NA
Jan 7 29° -25° (1968) 62° (2003) 0.01" NA
Jan 8 29° -28° (1976) 66° (2002) 0.01" NA
Jan 9 29° -24° (1977) 58° (1953) 0.01" NA
Jan 10 28° -25° (1977) 61° (1990) 0.01" NA
Jan 11 29° -23° (1982) 64° (1987) 0.01" NA
Jan 12 29° -23° (1964) 69° (1987) 0.01" NA
Jan 13 29° -25° (1998) 60° (1983) 0.01" NA
Jan 14 29° -31° (1972) 58° (2006) 0.01" NA
Jan 15 29° -26° (1972) 57° (1973) 0.01" NA
Jan 16 29° -22° (1978) 66° (1974) 0.01" NA
Jan 17 29° -18° (1997) 57° (1974) 0.01" NA
Jan 18 29° -22° (1970) 54° (1964) 0.01" NA
Jan 19 29° -30° (1963) 56° (1974) 0.01" NA
Jan 20 29° -27° (1962) 66° (1964) 0.01" NA
Jan 21 29° -30° (1949) 57° (1989) 0.01" NA
Jan 22 29° -22° (1949) 59° (1981) 0.01" NA
Jan 23 30° -26° (1952) 65° (1981) 0.01" NA
Jan 24 30° -18° (1949) 63° (1981) 0.01" NA
Jan 25 30° -25° (1957) 66° (2005) 0.01" NA
Jan 26 30° -28° (1950) 63° (2006) 0.02" NA
Jan 27 10° 30° -24° (1963) 55° (1989) 0.02" NA
Jan 28 10° 31° -30° (1972) 53° (1988) 0.02" NA
Jan 29 10° 31° -33° (1966) 58° (1960) 0.02" NA
Jan 30 10° 31° -24° (1996) 67° (1989) 0.02" NA
Jan 31 11° 31° -23° (1950) 65° (1992) 0.02" NA
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