NATIONAL WEATHER SERVICE - DENVER, COLORADO MONTHLY TEMPERATURE, RAINFALL, AND SNOWFALL EXTREMES FOR JANUARY 20 WARMEST JANS 20 WETTEST JANS 20 SNOWIEST JANS (1872-2021) (1872-2021) (1882-2021) 1 40.3 1986 1 2.35 1883 1 24.3 1992 2 40.1 1934 2 1.90 1877 2 22.2 1949 3 39.6 1953 3 1.60 1891 3 20.5 1883 4 39.4 1935 4 1.46 1949 4 19.2 1948 5 38.3 1893 5 1.43 1948 5 17.4 1959 6 38.2 1911 6 1.33 1962 6 17.2 1962 7 37.9 1923 7 1.31 1973 7 17.0 1987 8 37.4 2006 8 1.24 1959 17.0 1891 9 37.3 1981 9 1.19 1992 9 15.9 2007 37.3 1896 10 1.14 1989 10 15.7 1951 11 36.9 2003 11 1.03 1974 11 14.3 2014 12 36.8 1914 12 1.00 1965 12 14.1 1991 13 36.7 1909 1.00 1944 13 13.5 1944 14 36.5 1928 14 0.99 1905 14 13.2 1965 36.5 1909 15 0.94 2014 15 13.0 1989 16 36.4 1990 16 0.84 1967 16 12.5 1985 36.4 1880 0.84 1874 12.5 1930 18 36.3 1954 18 0.83 1951 18 12.3 1980 36.3 1900 19 0.78 2001 19 12.1 1973 20 36.0 2012 0.78 1940 20 12.0 1921 20 COLDEST JANS 20 DRIEST JANS LEAST SNOWIEST JANS (1872-2021) (1872-2021) (1882-2021) 1 16.8 1930 * 1 0.01 1952 1 T 2003 2 18.0 1979 0.01 1934 T 1934 3 18.1 1875 0.01 1933 3 0.1 1931 4 18.2 1937 4 0.02 1931 4 0.2 1933 5 19.1 1963 5 0.03 2003 5 0.3 1952 6 19.4 1949 0.03 1935 6 0.4 1914 7 19.5 1962 0.03 1914 7 0.8 1935 8 20.8 2007 8 0.04 1904 8 0.9 2020 9 21.7 1886 9 0.05 1998 0.9 1970 10 22.8 1916 0.05 1901 10 1.0 1961 11 23.7 1974 0.05 1893 1.0 1893 23.7 1872 12 0.07 2010 12 1.1 1904 13 24.2 1877 0.07 1961 13 1.3 1983 14 24.4 1940 14 0.08 2008 1.3 1923 15 24.6 1918 15 0.10 1970 15 1.4 1888 24.6 1879 0.10 1878 16 1.7 1911 17 25.1 1988 17 0.11 1888 17 1.9 2008 18 25.3 1891 18 0.12 1919 1.9 1903 19 25.5 1985 0.12 1912 1.9 1901 20 25.8 1978 0.12 1911 1.9 1900 0.12 1903 - Average January Temperature is 30.7 degrees (from 1981-2010 data). - Average January Precipitation is 0.41 inches (from 1981-2010 data). - Average January Snowfall is 7.0 inches (from 1981-2010 DEN data). * Coldest Month in Denver History. - Data collected at the Downtown City Office from 1872-December 1949, then at the Stapleton Airport Office from January 1950-February 1995, then at Denver International Airport from March 1995-Present. UPDATED: 1/31/2021