Swan Lake, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° -44° (1912) 70° (2002) 0.43" 5.1"
February 12° 32° -35° (1936) 72° (1982) 0.52" 6.5"
March 24° 44° -21° (1913) 92° (1943) 1.64" 6.6"
April 35° 59° 1° (1936) 97° (1926) 2.47" 0.9"
May 48° 71° 19° (1909) 109° (1934) 3.65" 0"
June 58° 81° 33° (1935) 108° (1931) 3.95" 0"
July 62° 85° 38° (1971) 113° (1936) 3.35" 0"
August 60° 83° 32° (1986) 111° (1936) 2.83" 0"
September 49° 75° 19° (1984) 106° (1971) 2.26" 0"
October 37° 63° -6° (1925) 95° (1963) 1.8" 0.8"
November 24° 43° -20° (1977) 82° (1999) 1.36" 3.4"
December 11° 29° -39° (1917) 67° (1998) 0.55" 7.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 54° 77° 36° (1910) 94° (1934) 0.13" NA
Jun 2 54° 77° 36° (1964) 100° (1940) 0.13" NA
Jun 3 55° 78° 35° (1946) 101° (1968) 0.13" NA
Jun 4 55° 78° 36° (1945) 99° (1968) 0.13" NA
Jun 5 55° 78° 36° (1935) 101° (1933) 0.13" NA
Jun 6 56° 78° 37° (1935) 105° (1933) 0.13" NA
Jun 7 56° 79° 33° (1935) 95° (1987) 0.13" NA
Jun 8 56° 79° 36° (1978) 101° (1911) 0.14" NA
Jun 9 57° 79° 34° (1915) 100° (2000) 0.14" NA
Jun 10 57° 80° 37° (1908) 107° (1933) 0.14" NA
Jun 11 57° 80° 41° (1958) 102° (1926) 0.14" NA
Jun 12 57° 80° 41° (1927) 102° (1956) 0.14" NA
Jun 13 58° 80° 38° (1933) 104° (1956) 0.14" NA
Jun 14 58° 81° 40° (1969) 102° (1956) 0.13" NA
Jun 15 58° 81° 35° (1917) 102° (1933) 0.13" NA
Jun 16 58° 81° 41° (1976) 103° (1933) 0.13" NA
Jun 17 59° 81° 39° (1912) 100° (1940) 0.13" NA
Jun 18 59° 82° 43° (1936) 103° (1933) 0.13" NA
Jun 19 59° 82° 41° (1976) 102° (1933) 0.13" NA
Jun 20 59° 82° 40° (1969) 103° (1933) 0.13" NA
Jun 21 59° 82° 41° (1972) 102° (1974) 0.13" NA
Jun 22 60° 82° 36° (1905) 107° (1988) 0.13" NA
Jun 23 60° 83° 43° (1942) 104° (1937) 0.13" NA
Jun 24 60° 83° 41° (1929) 102° (1954) 0.13" NA
Jun 25 60° 83° 41° (2004) 105° (1988) 0.13" NA
Jun 26 60° 83° 40° (1926) 105° (1931) 0.13" NA
Jun 27 61° 83° 42° (1976) 105° (1931) 0.13" NA
Jun 28 61° 84° 44° (2004) 108° (1931) 0.13" NA
Jun 29 61° 84° 43° (1923) 105° (1931) 0.13" NA
Jun 30 61° 84° 47° (1924) 104° (1931) 0.12" NA
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