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
Feb 1 28° -32° (1917) 58° (1989) 0.01" NA
Feb 2 28° -33° (1917) 58° (1924) 0.01" NA
Feb 3 28° -26° (1996) 63° (1962) 0.01" NA
Feb 4 29° -32° (1918) 56° (2005) 0.01" NA
Feb 5 29° -30° (1936) 67° (2005) 0.01" NA
Feb 6 29° -20° (1936) 57° (2005) 0.01" NA
Feb 7 30° -28° (1914) 67° (1987) 0.01" NA
Feb 8 10° 30° -31° (1933) 67° (1987) 0.01" NA
Feb 9 10° 30° -29° (1929) 60° (1999) 0.01" NA
Feb 10 10° 31° -29° (1936) 62° (1996) 0.01" NA
Feb 11 11° 31° -30° (1936) 61° (1999) 0.02" NA
Feb 12 11° 31° -30° (1944) 65° (1977) 0.02" NA
Feb 13 11° 32° -21° (1929) 64° (1934) 0.02" NA
Feb 14 12° 32° -27° (1936) 64° (1954) 0.02" NA
Feb 15 12° 32° -26° (1909) 65° (1921) 0.02" NA
Feb 16 12° 33° -35° (1936) 60° (1913) 0.02" NA
Feb 17 13° 33° -24° (1979) 69° (1913) 0.02" NA
Feb 18 13° 33° -22° (1938) 72° (1981) 0.02" NA
Feb 19 14° 34° -23° (1929) 65° (1943) 0.02" NA
Feb 20 14° 34° -19° (1918) 69° (1996) 0.02" NA
Feb 21 14° 34° -24° (1918) 67° (1943) 0.02" NA
Feb 22 15° 35° -16° (1962) 64° (1977) 0.02" NA
Feb 23 15° 35° -19° (1993) 72° (1982) 0.03" NA
Feb 24 15° 35° -21° (1965) 70° (2002) 0.03" NA
Feb 25 16° 36° -17° (1993) 66° (1981) 0.03" NA
Feb 26 16° 36° -21° (1993) 63° (1998) 0.03" NA
Feb 27 17° 37° -16° (1962) 62° (1976) 0.03" NA
Feb 28 17° 37° -30° (1962) 60° (1946) 0.03" NA
Feb 29 17° 37° -9° (1960) 69° (2000) 0.03" NA
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