Gann Valley, South Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° -35° (1972) 65° (1931) 0.27" 3.6"
February 32° -44° (1994) 75° (1930) 0.41" 4.6"
March 20° 44° -27° (1960) 90° (1943) 1.17" 6.6"
April 32° 58° -1° (1975) 98° (1980) 2" 2.7"
May 45° 70° 11° (1967) 109° (1934) 3.03" 0"
June 54° 80° 29° (1964) 111° (1933) 3.2" 0"
July 59° 87° 37° (1971) 120° (1936) 2.58" 0"
August 57° 85° 32° (1950) 116° (1936) 2.21" 0"
September 46° 76° 16° (1995) 112° (1931) 1.82" 0"
October 33° 61° -7° (1925) 99° (1963) 1.67" 0.7"
November 19° 41° -22° (1959) 84° (1999) 0.7" 3.4"
December 29° -36° (1990) 73° (1998) 0.4" 4.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 38° 65° 19° (1961) 99° (1959) 0.08" NA
May 2 39° 65° 17° (1967) 91° (1955) 0.08" NA
May 3 39° 65° 12° (1967) 90° (1939) 0.09" NA
May 4 40° 66° 11° (1967) 99° (1926) 0.09" NA
May 5 40° 66° 23° (1944) 95° (1926) 0.09" NA
May 6 41° 66° 20° (1931) 96° (2004) 0.09" NA
May 7 41° 67° 19° (1943) 94° (1928) 0.09" NA
May 8 41° 67° 22° (1945) 105° (1934) 0.09" NA
May 9 42° 68° 22° (1966) 99° (1934) 0.09" NA
May 10 42° 68° 24° (1981) 90° (1961) 0.09" NA
May 11 43° 68° 22° (1946) 88° (1958) 0.09" NA
May 12 43° 69° 23° (1943) 90° (1932) 0.1" NA
May 13 44° 69° 23° (1943) 97° (1932) 0.1" NA
May 14 44° 69° 26° (1953) 93° (1932) 0.1" NA
May 15 44° 70° 22° (1959) 97° (1931) 0.1" NA
May 16 45° 70° 26° (1929) 102° (1934) 0.1" NA
May 17 45° 70° 28° (1930) 106° (1934) 0.1" NA
May 18 45° 71° 27° (2002) 105° (1934) 0.1" NA
May 19 46° 71° 30° (2002) 105° (1934) 0.1" NA
May 20 46° 71° 26° (1967) 105° (1934) 0.1" NA
May 21 47° 72° 21° (1931) 96° (1925) 0.1" NA
May 22 47° 72° 20° (1963) 94° (1954) 0.1" NA
May 23 47° 72° 19° (1924) 100° (1926) 0.1" NA
May 24 48° 73° 24° (1924) 99° (1926) 0.1" NA
May 25 48° 73° 30° (1924) 101° (1967) 0.1" NA
May 26 48° 74° 29° (1961) 95° (1931) 0.11" NA
May 27 49° 74° 30° (1992) 99° (1969) 0.11" NA
May 28 49° 74° 26° (1965) 109° (1934) 0.11" NA
May 29 49° 75° 22° (1947) 109° (1934) 0.11" NA
May 30 50° 75° 28° (1947) 109° (1934) 0.11" NA
May 31 50° 75° 35° (1993) 103° (1934) 0.11" NA
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