Selected Quick Reference Climatic Info for Sioux City, IA and Huron, SD Temperatures ....Sioux City IA.... ....Huron, SD.... Record Warmest 111F Jul 4 and 17 1936 112F Jul 10 1966 Jul 11 1939 Record Coldest -35F Jan 12 1912 -43F Jan 8 1887, Jan 12 1912 Warmest Year 53.7 1931 50.0 1931 Coldest Year 45.1 1996 41.2 1883 and 1917 Warmest Month 87.1 Jul 1936 84.5 Jul 1936 Coldest Month 1.9 Feb 1936 -5.4 Feb 1936 Warmest Summer 80.1 1936 77.0 1936 Coldest Summer 67.0 1915 64.3 1915 Coldest Winter 9.5 1978-79 4.2 1886-87 Warmest Winter 32.1 1930-31 29.0 1930-31 Precipitation ....Sioux City, IA.... ....Huron, SD.... Wettest Year 41.36 2014 31.71 1962 (56.37 in 1881 - Precip Records back to 1861, gap in data 1882-86) Driest Year 14.33 1976 9.72 1952 Wettest Month 16.65 Jun 2014 11.56 Jun 1914 Driest Month Trace Oct 1952 and 1958 Wettest 24 hr 6.34 Jul 16/17 1996 5.48 Jun 18-19 1967 (Daily Record 5.50 Jul 17 1972) (4.98 inches within 2 hours from 5-7 pm CDT Jun 18 1967, 3.83 inches in one hour from 5-6 pm CDT) Snowfall (Inches) ....Sioux City, IA.... ....Huron, SD.... Greatest Seasonal 72.8 1916-17 89.6 2000-01 Least Seasonal 7.9 1967-68 10.1 1930-31 Greastest 24 Hr 20.0 Apr 10 1913 19.5 Jan 29-30 2001 (noon-noon) Greatest Storm 22.9 Apr 9-10 1913 25.6 Mar 2-4 1985 Greatest Month 34.0 Dec 2009 39.9 Feb 1962 Record Snow Depth 28 Mar 13 1962 36 Feb 25 - Mar 1 2001 28 Jan 7-10 2010 Earliest Snowfall... Significant.. (24 hr ) Earliest and Latest (2.0+ inches) 5.1 Oct 9 1970 Snowfall Data Missing Measurable.. (0.1-1.9 in.) Sep 30 1961 (0.4 in.) Trace.. Sep 25 1939 Latest Snowfall... Significant.. (2.0+ inches) 4.0 May 9 1945 Measurable.. 0.8 May 28 1947 Trace.. 0.8 May 28 1947 Selected Quick Reference Climatic Info for Sioux City, IA and Huron, SD... ......Sioux City, IA...... Temperatures... Month Record High Record Low Warmest Mean Coldest Mean Jan 71 26th 2002 -35 12th 1912 33.5 2006 3.9 1979 Feb 75 26th 1896 -31 11th 1899 37.7 1954 1.9 1936 Mar 91 30th 1968 -22 5th 1960 53.2 2012 17.9 1960 Apr 98 28th 1910 -2 3rd 1975 58.1 1915 40.3 1907 May 106 15th 2013 23 1st 1909 72.5 1934 52.5 1892 Jun 108 21st 1988 38 4th 1945 80.0 1933 63.5 1945 Jul 111 4th 1936 41 9th 1895 87.1 1936 68.5 1992 11th 1939 17th 1936 Aug 108 4th 1934 37 20th 1950 81.0 1936 66.2 1915 24th 1936 Sep 103 2nd 2000 24 29th 1945 71.9 1931 56.9 1965 6th 1939 17th 1895 Oct 96 3rd 1938 5 29th 1925 61.3 1963 39.3 1925 Nov 82 8th 2006 -9 7th 1991 46.5 2001 22.4 1896 14th 1959 21st 1937 30th 1896 28th 1891 Dec 71 6th 1939 -28 29th 1917 35.2 1889 6.0 1983 Precipitation... Month Wettest Driest Snowiest Jan 2.44 1949 .04 1928 29.1 1982 Feb 3.12 1915 .04 1931 25.0 1936 Mar 5.90 1987 .03 1910 27.3 1912 Apr 6.73 1984 .22 1928 22.9 1913 May 11.78 1903 .60 1955,1934 5.1 1917 Jun 16.65 2014 .53 1988 0 Jul 10.33 1972 .18 1936 0 Aug 10.12 2014 .12 1971 0 Sep 9.69 1965 .07 1950 0.4 1961 Oct 5.70 2009 T 1952,1958 9.8 1991 Nov 4.55 2015 .01 1967 16.5 1983 Dec 2.87 1911 .01 1943 34.0 2009 Heaviest Annual Snowfall 64.7 inches in 1983 Lightest Annual Snowfall 8.8 inches in 1894 Latest First Measurable Snow of Season Dec 25 1933 Atmospheric Pressure...Highest of Record 31.17 inches Jan 7 2015 Lowest of Record 28.66 inches Mar 26 1950 ........Huron, SD....... Temperatures... Month Record High Record Low Warmest Mean Coldest Mean Jan 65 5th 2012 -43 8th 1887 31.0 2006 -1.3 1888 12th 1912 Feb 71 25th 1958 -41 9th 1994 35.6 1954 -5.4 1936 Mar 89 30th 1943 -25 14th 1897 48.1 2012 15.0 1960 Apr 97 21st 1980 -2 3rd 1975 54.8 1895 36.9 1920 May 106 30th 1934 16 3rd 2013 70.0 1934 48.1 1907 Jun 109 24th 1988 31 5th 1894 78.3 1933 60.2 1945 21st 1988 25th 1936 Jul 112 10th 1966 37 30th 1971 84.5 1936 65.1 1992 Aug 110 13th 1965 33 31st 1886 79.5 1937 65.5 1915 4th 1934 1885 Sep 106 6th 1970 18 29th 1899 69.5 1897 50.5 1965 9th 1904 Oct 102 5th 1963 -6 29th 1925 59.4 1963 36.8 1925 Nov 86 8th 1999 -28 28th 1887 42.3 1999 13.5 1896 Dec 71 6th 1939 -34 25th 1884 29.9 1939 2.8 1983 Precipitation... Month Wettest Driest Snowiest Jan 2.87 1897 .01 1898 28.7 2001 Feb 3.87 1962 .03 1968,1921 39.9 1962 Mar 5.89 1977 .06 1925 33.9 1975 Apr 6.64 2001 .03 1934 25.8 1935 May 7.69 1962 .33 1992 4.2 1907 Jun 11.56 1914 .67 1950,1893 0 Jul 6.69 1993 .15 1932 0 Aug 6.66 1900 .14 1976 0 Sep 6.75 1901 T 1998 1.0 1912 Oct 6.44 1946 T 1952 10.7 1995 Nov 3.95 2005 T 1990,1939,1914, 32.7 1985 1912,1907 Dec 2.15 1931 T 1986,1943 26.0 2009,1968 Updated 2/19/2017