Roslyn, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 21° -36° (1972) 64° (1981) 0.64" 11.6"
February 27° -35° (1962) 64° (1958) 0.78" 8.1"
March 21° 38° -23° (1962) 79° (1963) 1.4" 4.8"
April 34° 55° -6° (1975) 96° (1980) 2.2" 4"
May 46° 67° 17° (2005) 96° (1959) 3.12" 0.6"
June 56° 76° 33° (1990) 105° (1988) 3.8" 0"
July 62° 82° 39° (1975) 107° (1987) 3.72" 0"
August 59° 80° 37° (1965) 104° (1965) 3.05" 0"
September 49° 70° 17° (1974) 98° (1983) 2.83" 0"
October 36° 56° 5° (1991) 91° (1963) 2.07" 0.8"
November 22° 38° -20° (1985) 76° (1965) 0.78" 6.5"
December 24° -34° (1967) 57° (2006) 0.76" 6.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 40° 63° 20° (1961) 96° (1959) 0.1" 0.1"
May 2 41° 63° 18° (1967) 90° (1959) 0.1" 0"
May 3 41° 63° 17° (2005) 87° (1981) 0.1" 0.1"
May 4 42° 64° 20° (1967) 85° (1980) 0.09" 0.1"
May 5 42° 64° 24° (1954) 88° (2000) 0.1" 0"
May 6 43° 65° 19° (1976) 79° (1953) 0.1" 0.1"
May 7 43° 65° 22° (1976) 85° (1970) 0.1" 0"
May 8 43° 65° 26° (1954) 86° (1985) 0.1" 0.1"
May 9 44° 66° 25° (1966) 87° (1987) 0.11" 0"
May 10 44° 66° 22° (1981) 90° (1987) 0.11" 0"
May 11 44° 66° 27° (1979) 86° (1958) 0.1" 0.1"
May 12 45° 66° 25° (1971) 86° (1991) 0.1" 0"
May 13 45° 67° 25° (1953) 88° (1977) 0.1" 0"
May 14 46° 67° 27° (1983) 89° (2001) 0.1" 0"
May 15 46° 67° 22° (1959) 88° (1977) 0.09" 0"
May 16 46° 68° 32° (1973) 90° (1987) 0.1" 0"
May 17 47° 68° 30° (1968) 90° (1987) 0.11" 0"
May 18 47° 68° 29° (1968) 88° (1972) 0.1" 0"
May 19 47° 68° 30° (1968) 94° (2009) 0.1" 0"
May 20 48° 69° 30° (1967) 87° (1955) 0.1" 0"
May 21 48° 69° 29° (1963) 92° (1964) 0.09" 0"
May 22 48° 69° 24° (1963) 89° (1964) 0.1" 0"
May 23 49° 69° 32° (1963) 86° (1955) 0.1" 0"
May 24 49° 70° 33° (1974) 86° (2010) 0.1" 0"
May 25 49° 70° 34° (1983) 88° (1980) 0.09" 0"
May 26 50° 70° 30° (1971) 89° (1966) 0.1" 0"
May 27 50° 70° 34° (1965) 93° (1969) 0.1" 0"
May 28 50° 71° 33° (1965) 92° (1969) 0.1" 0"
May 29 51° 71° 35° (1954) 90° (1958) 0.1" 0"
May 30 51° 71° 37° (1975) 89° (2002) 0.11" 0"
May 31 51° 71° 37° (1964) 87° (1986) 0.12" 0"
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