Hermosa, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 37° -27° (1950) 76° (1987) 0.3" 4.4"
February 15° 40° -31° (1996) 75° (1995) 0.46" 5.8"
March 23° 48° -21° (1996) 83° (2007) 0.93" 8.7"
April 32° 58° 1° (1975) 93° (1989) 1.8" 7.9"
May 42° 68° 18° (1950) 98° (1969) 3.22" 1.1"
June 51° 78° 31° (1951) 109° (2002) 2.53" 0"
July 58° 87° 39° (1987) 111° (2006) 1.85" 0"
August 57° 86° 38° (1992) 107° (2007) 1.56" 0"
September 46° 76° 18° (1985) 104° (1978) 1.29" 0.2"
October 34° 61° -2° (1991) 94° (2005) 1.42" 1.6"
November 22° 47° -19° (1959) 83° (1999) 0.53" 6"
December 13° 37° -30° (1990) 75° (1965) 0.42" 5.4"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 37° 64° 18° (1950) 88° (1955) 0.09" 0.1"
May 2 37° 64° 22° (2005) 85° (1985) 0.1" 0.1"
May 3 38° 64° 19° (1954) 93° (1952) 0.09" 0.1"
May 4 38° 65° 26° (2008) 91° (1986) 0.09" 0.1"
May 5 38° 65° 22° (1944) 93° (2004) 0.09" 0.1"
May 6 39° 65° 26° (1989) 85° (1992) 0.09" 0"
May 7 39° 65° 25° (2010) 90° (1992) 0.1" 0.1"
May 8 40° 66° 21° (2010) 88° (1985) 0.1" 0.1"
May 9 40° 66° 25° (2002) 86° (1962) 0.1" 0.1"
May 10 40° 66° 24° (1990) 90° (1961) 0.1" 0"
May 11 41° 67° 23° (1953) 87° (1958) 0.1" 0.1"
May 12 41° 67° 22° (1953) 90° (1960) 0.11" 0"
May 13 41° 67° 25° (1943) 92° (2001) 0.11" 0"
May 14 42° 67° 28° (1973) 89° (1976) 0.11" 0.1"
May 15 42° 68° 30° (2005) 90° (1987) 0.11" 0"
May 16 42° 68° 24° (2009) 91° (1979) 0.1" 0"
May 17 43° 68° 31° (1969) 93° (1988) 0.1" 0"
May 18 43° 68° 29° (1943) 92° (1992) 0.11" 0"
May 19 43° 69° 31° (1968) 94° (2009) 0.11" 0"
May 20 44° 69° 25° (2003) 92° (1964) 0.11" 0.1"
May 21 44° 69° 29° (1963) 92° (1966) 0.11" 0"
May 22 44° 69° 28° (1963) 91° (2006) 0.11" 0"
May 23 45° 70° 24° (2002) 87° (1960) 0.11" 0"
May 24 45° 70° 23° (2002) 89° (1985) 0.1" 0"
May 25 45° 70° 30° (1992) 86° (1985) 0.11" 0"
May 26 45° 71° 30° (1992) 95° (1969) 0.1" 0"
May 27 46° 71° 34° (1992) 98° (1969) 0.11" 0"
May 28 46° 71° 27° (1947) 93° (1943) 0.11" 0"
May 29 46° 71° 23° (1947) 94° (2003) 0.11" 0"
May 30 47° 72° 30° (1947) 91° (1969) 0.12" 0"
May 31 47° 72° 33° (1982) 89° (1960) 0.11" 0"
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