Hermosa, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 34° -27° (1950) 76° (1987) 0.37" 5.2"
February 16° 39° -31° (1996) 75° (1995) 0.46" 6.3"
March 23° 47° -21° (1996) 83° (2007) 1.03" 9.1"
April 32° 57° 1° (1975) 93° (1989) 1.86" 6.2"
May 43° 67° 18° (1950) 98° (1969) 2.96" 0.5"
June 52° 77° 31° (1951) 109° (2002) 2.83" 0"
July 58° 85° 39° (1987) 111° (2006) 2.03" 0"
August 57° 85° 38° (1992) 107° (2007) 1.61" 0"
September 46° 75° 18° (1985) 104° (1978) 1.1" 0.2"
October 35° 62° -2° (1991) 94° (2005) 1.37" 1.8"
November 22° 45° -19° (1959) 83° (1999) 0.61" 6.3"
December 13° 36° -30° (1990) 75° (1965) 0.41" 5.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 52° 81° 40° (1974) 99° (2004) 0.04" NA
Sep 2 51° 81° 38° (1974) 104° (1960) 0.04" NA
Sep 3 51° 80° 36° (1974) 100° (2005) 0.04" NA
Sep 4 51° 80° 34° (1962) 104° (1960) 0.04" NA
Sep 5 50° 79° 37° (1999) 101° (1978) 0.04" NA
Sep 6 50° 79° 34° (1943) 104° (1978) 0.04" NA
Sep 7 49° 79° 34° (1986) 99° (1983) 0.04" NA
Sep 8 49° 78° 36° (1962) 103° (1959) 0.04" NA
Sep 9 48° 78° 32° (2001) 102° (1994) 0.04" NA
Sep 10 48° 77° 28° (1962) 99° (1998) 0.04" NA
Sep 11 48° 77° 29° (1989) 94° (1990) 0.03" NA
Sep 12 47° 77° 32° (1949) 97° (2004) 0.03" NA
Sep 13 47° 76° 29° (1993) 92° (2006) 0.03" NA
Sep 14 46° 76° 24° (1993) 100° (1948) 0.03" NA
Sep 15 46° 75° 32° (1965) 103° (1948) 0.03" NA
Sep 16 46° 75° 30° (1965) 95° (1961) 0.03" NA
Sep 17 45° 75° 26° (1991) 101° (2000) 0.03" NA
Sep 18 45° 74° 24° (1991) 97° (1998) 0.03" NA
Sep 19 45° 74° 22° (1991) 93° (1984) 0.03" NA
Sep 20 44° 73° 29° (1983) 93° (1960) 0.03" NA
Sep 21 44° 73° 23° (1995) 88° (2005) 0.04" NA
Sep 22 43° 73° 19° (1995) 95° (2007) 0.04" NA
Sep 23 43° 72° 24° (1985) 97° (1992) 0.04" NA
Sep 24 43° 72° 18° (1985) 94° (1992) 0.04" NA
Sep 25 42° 71° 24° (1984) 91° (1987) 0.04" NA
Sep 26 42° 71° 18° (1942) 95° (1974) 0.04" NA
Sep 27 42° 71° 26° (1951) 94° (1952) 0.04" NA
Sep 28 41° 70° 25° (1951) 92° (1994) 0.04" NA
Sep 29 41° 70° 21° (1984) 90° (2007) 0.04" NA
Sep 30 41° 69° 25° (1985) 93° (1989) 0.04" NA
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