Sioux City, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 10° 31° -35° (1912) 71° (2002) 0.62" 6.7"
February 15° 35° -31° (1899) 75° (1896) 0.7" 6.6"
March 26° 47° -22° (1960) 91° (1968) 2" 6.5"
April 37° 62° -2° (1975) 98° (1910) 2.95" 1.8"
May 49° 73° 23° (1909) 105° (1934) 3.74" 0.2"
June 59° 82° 38° (1945) 108° (1988) 3.89" 0"
July 63° 86° 41° (1895) 111° (1939) 3.44" 0"
August 61° 83° 37° (1950) 108° (1936) 3.23" 0"
September 51° 76° 24° (1945) 103° (2000) 2.96" 0"
October 38° 63° 5° (1925) 96° (1938) 2.13" 1"
November 25° 46° -9° (1991) 82° (2006) 1.31" 4.4"
December 13° 32° -28° (1917) 71° (1939) 0.8" 7.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 18° 37° -8° (1896) 70° (1998) 0.03" 0.2"
Dec 2 17° 37° -7° (1942) 62° (1998) 0.04" 0.3"
Dec 3 17° 36° -9° (1919) 61° (1998) 0.03" 0.2"
Dec 4 16° 36° -9° (1978) 59° (1916) 0.03" 0.3"
Dec 5 16° 35° -9° (2005) 63° (1939) 0.03" 0.2"
Dec 6 16° 35° -16° (2005) 71° (1939) 0.03" 0.3"
Dec 7 15° 34° -11° (1976) 68° (1984) 0.03" 0.3"
Dec 8 15° 34° -19° (1978) 64° (1970) 0.03" 0.2"
Dec 9 14° 33° -16° (1958) 63° (1957) 0.03" 0.3"
Dec 10 14° 33° -16° (1919) 68° (1890) 0.03" 0.3"
Dec 11 14° 33° -10° (1989) 60° (1946) 0.03" 0.3"
Dec 12 14° 32° -15° (1932) 60° (1921) 0.03" 0.2"
Dec 13 13° 32° -21° (1917) 64° (1921) 0.02" 0.3"
Dec 14 13° 32° -22° (1901) 59° (1998) 0.03" 0.3"
Dec 15 13° 32° -20° (1901) 62° (1939) 0.02" 0.2"
Dec 16 13° 31° -15° (1989) 64° (1962) 0.02" 0.3"
Dec 17 12° 31° -14° (2008) 61° (1980) 0.03" 0.2"
Dec 18 12° 31° -19° (1983) 60° (1976) 0.02" 0.3"
Dec 19 12° 31° -19° (1983) 54° (1979) 0.02" 0.2"
Dec 20 12° 31° -17° (1961) 56° (1900) 0.03" 0.3"
Dec 21 12° 31° -22° (1989) 60° (1941) 0.02" 0.3"
Dec 22 11° 30° -24° (1989) 61° (1933) 0.02" 0.2"
Dec 23 11° 30° -24° (1989) 58° (1950) 0.03" 0.3"
Dec 24 11° 30° -18° (1983) 62° (1889) 0.02" 0.2"
Dec 25 11° 30° -13° (1983) 56° (1963) 0.02" 0.2"
Dec 26 11° 30° -16° (1951) 56° (1959) 0.03" 0.3"
Dec 27 11° 30° -19° (1924) 57° (1928) 0.02" 0.2"
Dec 28 11° 30° -20° (1924) 60° (2002) 0.02" 0.2"
Dec 29 11° 30° -28° (1917) 61° (1999) 0.02" 0.2"
Dec 30 10° 30° -16° (1968) 66° (2004) 0.02" 0.3"
Dec 31 10° 30° -19° (1968) 60° (1904) 0.02" 0.2"
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