Hartley, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 32° -33° (1966) 69° (1987) 0.38" 7"
February 14° 36° -37° (1994) 73° (1992) 0.63" 8.9"
March 23° 46° -29° (1998) 83° (2007) 1.33" 7.8"
April 34° 60° 2° (1975) 96° (1992) 1.84" 5.6"
May 45° 70° 12° (1950) 103° (1992) 3.33" 0.3"
June 55° 80° 30° (1969) 113° (2002) 3.58" 0"
July 61° 88° 38° (1959) 116° (2006) 3.11" 0"
August 59° 87° 38° (1988) 110° (1988) 1.88" 0"
September 49° 77° 20° (1951) 107° (1960) 1.54" 0.1"
October 36° 62° -5° (1991) 98° (1963) 1.75" 1.5"
November 23° 45° -25° (1959) 85° (1999) 0.6" 6.4"
December 12° 32° -33° (1990) 70° (1998) 0.44" 4.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 12° 34° -26° (1996) 70° (1992) 0.02" 0.3"
Feb 2 12° 34° -31° (1996) 63° (1991) 0.01" 0.2"
Feb 3 12° 34° -32° (1996) 69° (1962) 0.02" 0.3"
Feb 4 12° 34° -24° (1989) 72° (2005) 0.02" 0.3"
Feb 5 12° 34° -19° (1982) 60° (2009) 0.01" 0.3"
Feb 6 12° 34° -17° (1988) 63° (1987) 0.02" 0.3"
Feb 7 13° 34° -23° (1971) 68° (1987) 0.02" 0.3"
Feb 8 13° 35° -27° (1994) 70° (1954) 0.02" 0.2"
Feb 9 13° 35° -37° (1994) 63° (1954) 0.02" 0.3"
Feb 10 13° 35° -17° (1955) 72° (1951) 0.01" 0.3"
Feb 11 13° 35° -23° (1988) 64° (1987) 0.02" 0.2"
Feb 12 13° 35° -16° (1955) 65° (1983) 0.02" 0.3"
Feb 13 14° 35° -22° (2007) 68° (1954) 0.02" 0.3"
Feb 14 14° 36° -21° (2007) 70° (1954) 0.02" 0.4"
Feb 15 14° 36° -28° (2007) 64° (1999) 0.02" 0.3"
Feb 16 14° 36° -24° (1979) 64° (1981) 0.03" 0.4"
Feb 17 15° 36° -22° (1956) 63° (2002) 0.02" 0.4"
Feb 18 15° 37° -22° (1993) 68° (1983) 0.02" 0.3"
Feb 19 15° 37° -23° (1959) 63° (1965) 0.02" 0.4"
Feb 20 15° 37° -16° (1959) 61° (1982) 0.03" 0.3"
Feb 21 16° 37° -21° (1952) 73° (1982) 0.02" 0.4"
Feb 22 16° 38° -20° (1957) 69° (1958) 0.02" 0.4"
Feb 23 16° 38° -19° (1965) 68° (1958) 0.03" 0.3"
Feb 24 16° 38° -19° (1993) 68° (1995) 0.03" 0.4"
Feb 25 17° 39° -14° (1952) 72° (1958) 0.03" 0.3"
Feb 26 17° 39° -11° (1993) 69° (1999) 0.02" 0.3"
Feb 27 17° 39° -15° (1962) 68° (1980) 0.03" 0.4"
Feb 28 18° 39° -31° (1962) 65° (1992) 0.03" 0.3"
Feb 29 18° 40° -10° (1996) 73° (1992) 0.03" NA
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