Sylvan Lake, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 36° -43° (1963) 68° (1981) 0.39" 5.7"
February 16° 40° -34° (1962) 68° (1958) 0.63" 8.6"
March 21° 46° -30° (1956) 72° (1946) 1.07" 13.1"
April 28° 54° -15° (1966) 84° (1989) 2.06" 10.2"
May 37° 63° 5° (1954) 90° (1969) 3.31" 0.8"
June 46° 73° 19° (1951) 97° (1954) 3.17" 0.2"
July 52° 80° 30° (1971) 100° (1954) 3.02" 0"
August 50° 79° 22° (1966) 96° (1988) 2.38" 0"
September 41° 71° 8° (1961) 97° (1971) 1.5" 0.7"
October 31° 59° -5° (1991) 85° (1963) 1.47" 3.6"
November 21° 44° -25° (1952) 76° (1975) 0.67" 7.6"
December 14° 37° -37° (1964) 68° (1979) 0.52" 7.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 36° 65° 12° (1958) 85° (1963) 0.05" NA
Oct 2 36° 65° 19° (1964) 82° (1963) 0.05" NA
Oct 3 36° 65° 19° (1968) 80° (1981) 0.05" NA
Oct 4 35° 64° 16° (1964) 81° (1992) 0.05" NA
Oct 5 35° 64° 14° (1964) 83° (1963) 0.05" NA
Oct 6 35° 64° 4° (1952) 82° (1963) 0.05" NA
Oct 7 34° 63° 9° (2000) 83° (1975) 0.05" NA
Oct 8 34° 63° 8° (1946) 82° (1956) 0.05" NA
Oct 9 34° 62° 12° (1993) 80° (1953) 0.05" NA
Oct 10 33° 62° 16° (1958) 82° (1947) 0.05" NA
Oct 11 33° 62° 15° (1948) 80° (1953) 0.05" NA
Oct 12 33° 61° 15° (2006) 78° (1975) 0.05" NA
Oct 13 32° 61° 6° (1969) 78° (1950) 0.05" NA
Oct 14 32° 60° 6° (1969) 79° (1958) 0.05" NA
Oct 15 32° 60° 11° (1960) 78° (1964) 0.05" NA
Oct 16 31° 59° 12° (1969) 84° (1961) 0.05" NA
Oct 17 31° 59° 12° (1948) 80° (1961) 0.05" NA
Oct 18 31° 58° 13° (1968) 77° (1955) 0.05" NA
Oct 19 30° 58° 5° (1976) 79° (2003) 0.05" NA
Oct 20 30° 57° 10° (1976) 78° (2003) 0.05" NA
Oct 21 30° 57° 9° (1976) 76° (1950) 0.05" NA
Oct 22 29° 56° 14° (1984) 77° (2003) 0.05" NA
Oct 23 29° 56° 8° (1981) 80° (2003) 0.05" NA
Oct 24 29° 55° 11° (1945) 81° (2003) 0.04" NA
Oct 25 28° 55° 9° (1942) 79° (1992) 0.04" NA
Oct 26 28° 54° 9° (1997) 72° (1952) 0.04" NA
Oct 27 28° 53° 5° (1954) 72° (1943) 0.04" NA
Oct 28 27° 53° 8° (1963) 74° (1983) 0.04" NA
Oct 29 27° 52° 4° (1991) 72° (1990) 0.04" NA
Oct 30 26° 52° -5° (1991) 71° (1964) 0.04" NA
Oct 31 26° 51° -1° (1991) 73° (1950) 0.04" NA
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