National Weather Service United States Department of Commerce

Denver's Climate Data for Halloween (1872 - 2021) 

Temperatures:  Warmest (79) 2016 and 1950, Coldest:  (7)  2019

Average Temperatures:  High (57.2), low (31.4)

Precipitation:  Wettest:  (0.66") 1889, Snowiest:  (8.0") 1972

Historical Chance of Precipitation:  Rain (19%), Snow (12%)

Last time it officially snowed on Halloween was in 2002 

Date Precipitation Snowfall Snow Depth Max Temp Min Temp Average
1872-10-31 0 M M 51 31 41
1873-10-31 0 M M 52 22 37
1874-10-31 0 M M 28 13 20.5
1875-10-31 0 M M 76 36 56
1876-10-31 0 M M 57 27 42
1877-10-31 0.10 M M 37 22 29.5
1878-10-31 0 M M 70 28 49
1879-10-31 0.02 M M 38 20 29
1880-10-31 0 M M 55 26 40.5
1881-10-31 0.05 M M 54 34 44
1882-10-31 0 0 M 52 32 42
1883-10-31 0 0 M 50 33 41.5
1884-10-31 0 0 M 73 38 55.5
1885-10-31 0 0 M 53 37 45
1886-10-31 0 0 M 71 40 55.5
1887-10-31 0 0 M 73 34 53.5
1888-10-31 0 0 M 69 41 55
1889-10-31 0.66 5 M 32 26 29
1890-10-31 0 0 M 71 33 52
1891-10-31 0 0 M 50 26 38
1892-10-31 0.06 0.2 M 58 29 43.5
1893-10-31 0 0 M 69 41 55
1894-10-31 0 0 M 56 43 49.5
1895-10-31 0 0 M 60 25 42.5
1896-10-31 0 0 M 64 33 48.5
1897-10-31 0 0 M 49 25 37
1898-10-31 0 0 M 76 44 60
1899-10-31 T T M 49 38 43.5
10/31/1900 0 0 M 52 19 35.5
10/31/1901 0 0 M 59 32 45.5
10/31/1902 0 0 M 68 37 52.5
10/31/1903 0 0 M 45 21 33
10/31/1904 0 0 M 65 32 48.5
10/31/1905 0 T M 47 12 29.5
10/31/1906 0 0 M 68 36 52
10/31/1907 T 0 M 63 44 53.5
10/31/1908 0 0 M 60 36 48
10/31/1909 0.05 T M 55 32 43.5
10/31/1910 0 0 M 68 38 53
10/31/1911 T 0 M 50 26 38
10/31/1912 0.09 2.9 M 34 25 29.5
10/31/1913 0 0 M 44 24 34
10/31/1914 0 0 M 70 40 55
10/31/1915 0 0 M 72 44 58
10/31/1916 0 0 M 72 37 54.5
10/31/1917 0 0 M 45 30 37.5
10/31/1918 0 0 M 70 29 49.5
10/31/1919 0 0 M 47 27 37
10/31/1920 0.26 3.5 M 31 20 25.5
10/31/1921 0 0 0 62 36 49
10/31/1922 0 0 0 55 29 42
10/31/1923 0 0 0 41 25 33
10/31/1924 0 0 0 69 34 51.5
10/31/1925 0 0 0 58 35 46.5
10/31/1926 0 0 T 62 27 44.5
10/31/1927 0 0 0 58 34 46
10/31/1928 0.15 0.4 T 42 24 33
10/31/1929 0.01 1.1 4 36 23 29.5
10/31/1930 0 0 0 72 36 54
10/31/1931 0 0 0 63 26 44.5
10/31/1932 0 0 0 48 25 36.5
10/31/1933 0 0 0 76 51 63.5
10/31/1934 0 0 0 65 47 56
10/31/1935 0.04 0.6 0 41 18 29.5
10/31/1936 T 0 0 62 41 51.5
10/31/1937 0 0 0 73 36 54.5
10/31/1938 0 0 0 75 46 60.5
10/31/1939 0 0 0 60 37 48.5
10/31/1940 0 0 0 56 35 45.5
10/31/1941 0 0 0 50 25 37.5
10/31/1942 0 0 0 54 31 42.5
10/31/1943 0.21 2.5 0 45 29 37
10/31/1944 0 0 0 67 43 55
10/31/1945 T 0 0 73 49 61
10/31/1946 0 0 0 55 31 43
10/31/1947 0 0 0 56 38 47
10/31/1948 0 0 M 61 37 49
10/31/1949 0 0 M 67 28 47.5
10/31/1950 0 0 0 79 47 63
10/31/1951 0.06 2 T 29 21 25
10/31/1952 0 0 0 72 38 55
10/31/1953 0 0 0 68 34 51
10/31/1954 0 0 0 58 24 41
10/31/1955 T T 0 65 35 50
10/31/1956 0 0 0 65 32 48.5
10/31/1957 0 0 0 70 39 54.5
10/31/1958 0 0 0 57 28 42.5
10/31/1959 0 0 4 48 21 34.5
10/31/1960 0 0 0 61 34 47.5
10/31/1961 0 0 1 56 29 42.5
10/31/1962 0 0 0 71 31 51
10/31/1963 0.16 1.1 0 46 27 36.5
10/31/1964 0 0 0 66 35 50.5
10/31/1965 0 0 0 66 29 47.5
10/31/1966 0.16 1.4 0 48 26 37
10/31/1967 0 0 0 63 33 48
10/31/1968 0.26 0 0 63 37 50
10/31/1969 0 0 T 45 24 34.5
10/31/1970 0 0 0 53 21 37
10/31/1971 0 0 T 54 24 39
10/31/1972 0.53 8 2 30 15 22.5
10/31/1973 0 0 0 62 38 50
10/31/1974 0 0 0 56 28 42
10/31/1975 T 0 0 55 37 46
10/31/1976 0 0 T 64 31 47.5
10/31/1977 0.39 3.3 0 56 28 42
10/31/1978 0 0 0 59 32 45.5
10/31/1979 0 0 T 40 23 31.5
10/31/1980 0 0 0 76 36 56
10/31/1981 0 0 0 53 36 44.5
10/31/1982 0.04 0 0 53 34 43.5
10/31/1983 T 0 0 71 42 56.5
10/31/1984 0 0 0 67 24 45.5
10/31/1985 0.38 0 0 59 36 47.5
10/31/1986 0.51 1.2 0 44 33 38.5
10/31/1987 0 0 0 62 47 54.5
10/31/1988 0 0 0 73 34 53.5
10/31/1989 0.24 3.4 0 59 25 42
10/31/1990 0 0 0 72 37 54.5
10/31/1991 0 0 3 32 10 21
10/31/1992 0.42 0 0 53 35 44
10/31/1993 0 0 1 65 27 46
10/31/1994 0 0 0 59 27 43
10/31/1995 0 0 0 45 27 36
10/31/1996 T T 0 32 28 30
10/31/1997 T 0 0 59 38 48.5
10/31/1998 0.06 0 0 38 34 36
10/31/1999 0 0 0 77 31 54
10/31/2000 0.07 0 0 46 33 39.5
10/31/2001 0 0 0 71 37 54
10/31/2002 0.01 1.2 2 19 15 17
10/31/2003 0.07 0 0 30 23 26.5
10/31/2004 0.27 0 0 55 24 39.5
10/31/2005 0 0 0 55 31 43
10/31/2006 0 0 0 38 23 30.5
10/31/2007 0.01 T 0 48 32 40
10/31/2008 0 0 0 76 38 57
10/31/2009 0 0 0 55 32 43.5
10/31/2010 T 0 0 62 37 49.5
10/31/2011 0 0 0 71 40 55.5
10/31/2012 0 0 0 70 41 55.5
10/31/2013 0 0 0 56 31 43.5
10/31/2014 0 0 0 58 34 46
10/31/2015 0 0 0 69 37 53
10/31/2016 0 0 0 79 45 62
10/31/2017 0 0 0 52 26 39
10/31/2018 T T 0 46 30 38
10/31/2019 0 0 4 42 7 24.5
10/31/2020 0 0 0 65 31 48
10/31/2021 0 0 0 44 34 39

 

Count:   150 150 101 150 150 150
Average:    0.04 0.3 0.2 57.2 31.4 44.3
Median:     0 0 0 58 32 45
Low Value:  0 0 0 20 6 17
High Value: 0.53 8.0 4 79 47 63,5