Swan Lake, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 28° -44° (1912) 70° (2002) 0.43" 3.8"
February 12° 33° -35° (1936) 72° (1982) 0.53" 4.1"
March 23° 44° -21° (1913) 92° (1943) 1.56" 5"
April 35° 60° 1° (1936) 97° (1926) 2.73" 2.2"
May 47° 71° 19° (1909) 109° (1934) 3.64" 0.1"
June 58° 80° 33° (1935) 108° (1931) 4.36" 0"
July 62° 84° 38° (1971) 113° (1936) 3.28" 0"
August 59° 82° 32° (1986) 111° (1936) 2.85" 0"
September 49° 75° 19° (1984) 106° (1971) 2.93" 0.1"
October 36° 62° -6° (1925) 95° (1963) 2.15" 0.6"
November 23° 44° -20° (1977) 82° (1999) 1.37" 5.4"
December 11° 30° -39° (1917) 67° (1998) 0.59" 6.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jul 1 61° 84° 43° (1995) 100° (1911) 0.12" 0"
Jul 2 61° 84° 43° (1945) 100° (1939) 0.12" 0"
Jul 3 62° 84° 42° (1917) 100° (1936) 0.11" 0"
Jul 4 62° 84° 41° (1967) 110° (1936) 0.12" 0"
Jul 5 62° 84° 41° (1915) 110° (1936) 0.11" 0"
Jul 6 62° 84° 43° (1978) 105° (1936) 0.12" 0"
Jul 7 62° 84° 42° (1908) 105° (1937) 0.11" 0"
Jul 8 62° 85° 49° (1953) 108° (1930) 0.12" 0"
Jul 9 62° 85° 44° (1905) 107° (1930) 0.11" 0"
Jul 10 62° 85° 46° (1996) 108° (1930) 0.11" 0"
Jul 11 62° 85° 46° (1926) 107° (1930) 0.11" 0"
Jul 12 62° 85° 44° (1926) 104° (1980) 0.1" 0"
Jul 13 62° 85° 43° (1990) 104° (1925) 0.1" 0"
Jul 14 62° 85° 44° (1930) 104° (1936) 0.1" 0"
Jul 15 62° 85° 45° (1912) 105° (1931) 0.11" 0"
Jul 16 62° 85° 44° (1976) 107° (1926) 0.1" 0"
Jul 17 62° 85° 45° (1911) 113° (1936) 0.11" 0"
Jul 18 62° 85° 47° (2009) 107° (1926) 0.1" 0"
Jul 19 62° 85° 47° (2009) 110° (1926) 0.09" 0"
Jul 20 62° 84° 47° (1970) 108° (1926) 0.1" 0"
Jul 21 62° 84° 44° (2000) 110° (1934) 0.11" 0"
Jul 22 62° 84° 44° (1925) 108° (1936) 0.1" 0"
Jul 23 62° 84° 45° (1906) 108° (1934) 0.1" 0"
Jul 24 62° 84° 41° (1905) 107° (1940) 0.1" 0"
Jul 25 62° 84° 49° (2004) 103° (1936) 0.1" 0"
Jul 26 62° 84° 45° (1911) 108° (1930) 0.1" 0"
Jul 27 62° 84° 44° (1925) 110° (1930) 0.1" 0"
Jul 28 62° 84° 43° (1925) 105° (1935) 0.1" 0"
Jul 29 62° 84° 43° (1971) 112° (1947) 0.1" 0"
Jul 30 62° 84° 38° (1971) 106° (1955) 0.1" 0"
Jul 31 61° 84° 47° (1980) 106° (1931) 0.1" 0"
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