Roslyn, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° -36° (1972) 64° (1981) 0.75" NA
February 26° -35° (1962) 64° (1958) 0.57" NA
March 20° 38° -23° (1962) 79° (1963) 1.1" NA
April 33° 55° -6° (1975) 96° (1980) 1.84" NA
May 46° 68° 17° (2005) 96° (1959) 2.63" NA
June 56° 77° 33° (1990) 105° (1988) 3.48" NA
July 61° 82° 39° (1975) 107° (1987) 3.73" NA
August 59° 80° 37° (1965) 104° (1965) 3.06" NA
September 48° 69° 17° (1974) 98° (1983) 1.88" NA
October 36° 56° 5° (1991) 91° (1963) 1.69" NA
November 20° 37° -20° (1985) 76° (1965) 0.85" NA
December 23° -34° (1967) 57° (2006) 0.48" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 54° 75° 38° (1965) 95° (1983) 0.08" NA
Sep 2 54° 75° 36° (1974) 98° (1983) 0.07" NA
Sep 3 53° 74° 34° (1974) 95° (1960) 0.07" NA
Sep 4 53° 74° 35° (1956) 94° (1979) 0.07" NA
Sep 5 52° 73° 32° (1965) 96° (1978) 0.07" NA
Sep 6 52° 73° 33° (1956) 98° (1978) 0.07" NA
Sep 7 52° 73° 36° (1974) 96° (1978) 0.07" NA
Sep 8 51° 72° 32° (1975) 97° (1959) 0.07" NA
Sep 9 51° 72° 37° (1972) 93° (1979) 0.06" NA
Sep 10 50° 71° 29° (1959) 93° (1981) 0.06" NA
Sep 11 50° 71° 30° (1964) 93° (1978) 0.06" NA
Sep 12 50° 71° 30° (1975) 93° (1990) 0.06" NA
Sep 13 49° 70° 28° (1975) 89° (1990) 0.06" NA
Sep 14 49° 70° 33° (1956) 93° (1969) 0.06" NA
Sep 15 48° 70° 33° (1964) 95° (1955) 0.06" NA
Sep 16 48° 69° 30° (1959) 90° (2002) 0.06" NA
Sep 17 47° 69° 31° (1981) 92° (1955) 0.06" NA
Sep 18 47° 68° 29° (1971) 91° (1984) 0.06" NA
Sep 19 47° 68° 33° (1991) 93° (1984) 0.06" NA
Sep 20 46° 68° 29° (1973) 87° (1972) 0.06" NA
Sep 21 46° 67° 29° (1983) 81° (1969) 0.06" NA
Sep 22 46° 67° 24° (1974) 88° (1958) 0.06" NA
Sep 23 45° 67° 25° (1976) 87° (2007) 0.06" NA
Sep 24 45° 66° 26° (1965) 84° (1990) 0.06" NA
Sep 25 44° 66° 28° (1982) 84° (1990) 0.06" NA
Sep 26 44° 65° 22° (1965) 90° (1974) 0.05" NA
Sep 27 44° 65° 26° (1976) 90° (1956) 0.06" NA
Sep 28 43° 65° 23° (1992) 83° (1983) 0.06" NA
Sep 29 43° 64° 28° (1984) 81° (1957) 0.06" NA
Sep 30 43° 64° 17° (1974) 85° (1976) 0.06" NA
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