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
Jul 1 61° 84° 43° (1995) 100° (1911) 0.12" NA
Jul 2 61° 84° 43° (1945) 100° (1939) 0.12" NA
Jul 3 61° 84° 42° (1917) 100° (1936) 0.12" NA
Jul 4 61° 84° 41° (1967) 110° (1936) 0.12" NA
Jul 5 62° 85° 41° (1915) 110° (1936) 0.12" NA
Jul 6 62° 85° 43° (1978) 105° (1936) 0.12" NA
Jul 7 62° 85° 42° (1908) 105° (1937) 0.12" NA
Jul 8 62° 85° 49° (1953) 108° (1930) 0.11" NA
Jul 9 62° 85° 44° (1905) 107° (1930) 0.11" NA
Jul 10 62° 85° 46° (1996) 108° (1930) 0.11" NA
Jul 11 62° 85° 46° (1926) 107° (1930) 0.11" NA
Jul 12 62° 85° 44° (1926) 104° (1980) 0.11" NA
Jul 13 62° 85° 43° (1990) 104° (1925) 0.11" NA
Jul 14 62° 85° 44° (1930) 104° (1936) 0.11" NA
Jul 15 62° 85° 45° (1912) 105° (1931) 0.11" NA
Jul 16 62° 85° 44° (1976) 107° (1926) 0.11" NA
Jul 17 62° 85° 45° (1911) 113° (1936) 0.11" NA
Jul 18 63° 85° 49° (1979) 107° (1926) 0.11" NA
Jul 19 63° 85° 48° (1911) 110° (1926) 0.1" NA
Jul 20 63° 86° 47° (1970) 108° (1926) 0.1" NA
Jul 21 63° 86° 44° (2000) 110° (1934) 0.1" NA
Jul 22 63° 86° 44° (1925) 108° (1936) 0.1" NA
Jul 23 63° 86° 45° (1906) 108° (1934) 0.1" NA
Jul 24 63° 85° 41° (1905) 107° (1940) 0.1" NA
Jul 25 63° 85° 49° (2004) 103° (1936) 0.1" NA
Jul 26 63° 85° 45° (1911) 108° (1930) 0.1" NA
Jul 27 63° 85° 44° (1925) 110° (1930) 0.1" NA
Jul 28 63° 85° 43° (1925) 105° (1935) 0.1" NA
Jul 29 63° 85° 43° (1971) 112° (1947) 0.1" NA
Jul 30 63° 85° 38° (1971) 106° (1955) 0.1" NA
Jul 31 62° 85° 47° (1980) 106° (1931) 0.1" NA
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