Boulder Monthly Climate Data: Precipitation
Values are monthly totals and units are in inches
Note: precipitation includes rain, snow, hail... Snow/ice amounts are either directly measured or a ratio of 1/10 applied for inches of snow to water equivalent. A station information page is available.
Year | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | YEAR TOTAL |
1893 | 0.05 | 0.70 | 0.25 | 1.00 | 2.00 | 0.50 | 0.60 | 0.75 | 0.60 | 1.16 | 0.80 | 0.39 | 8.80** |
1894 | 0.16 | 0.82 | 1.40 | 2.30 | 4.50 | 0.80 | 3.08 | 0.84 | 2.10 | 0.10 | 0.30 | 0.67 | 17.07 |
1895 | 0.30 | 0.66 | 1.98 | 1.89 | 4.28 | 3.77 | 4.31 | 0.82 | 0.50 | 1.27 | 0.44 | 0.13 | 20.35 |
1896 | 0.38 | 0.50 | 1.74 | 0.84 | 5.60 | 1.69 | 1.53 | 1.93 | 1.67 | 0.59 | 0.00 | 0.20 | 16.67 |
1897 | 0.23 | 0.80 | 2.40 | 0.94 | 2.30 | 3.71 | 3.09 | 2.96 | 0.86 | 1.66 | 0.47 | 0.70 | 20.12 |
1898 | 0.43 | 0.55 | 0.67 | 1.54 | 3.76 | 1.51 | 0.97 | 1.52 | 1.12 | 0.90 | 1.76 | 1.30 | 16.03 |
1899 | 0.87 | 0.98 | 2.79 | 1.23 | 0.55 | 0.58 | 2.18 | 1.81 | 0.15 | 1.94 | Tr | 0.96 | 14.04 |
1900 | 0.40 | 1.06 | 0.75 | 9.18 | 1.84 | 0.49 | 0.48 | 0.22 | 1.54 | 0.13 | 0.19 | 0.61 | 16.89 |
1901 | 0.53 | 0.30 | 1.74 | 3.51 | 1.62 | 1.76 | 0.46 | 1.69 | 0.16 | 0.65 | Tr | 1.43 | 13.85 |
1902 | 0.37 | 0.48 | 1.48 | 1.01 | 2.32 | 1.46 | 1.26 | 0.53 | 5.46 | 1.44 | 1.29 | 1.34 | 18.44 |
1903 | 0.08 | 1.52 | 1.45 | 2.31 | 2.02 | 1.87 | 0.95 | 1.46 | 1.31 | 3.43 | 0.15 | 0.16 | 16.71 |
1904 | 0.09 | 0.31 | 2.37 | 1.45 | 5.35 | 2.72 | 1.05 | 1.00 | 1.60 | 1.06 | 0.08 | 0.70 | 17.78 |
1905 | 0.81 | 0.70 | 1.85 | 6.65 | 4.78 | 0.55 | 1.86 | 0.22 | 1.64 | 2.54 | 0.23 | Tr | 21.83 |
1906 | 0.22 | 0.17 | 2.45 | 5.32 | 3.37 | 1.56 | 3.81 | 2.50 | 3.13 | 1.80 | 1.87 | Tr | 26.20 |
1907 | 0.22 | 0.56 | 0.47 | 3.59 | 5.29 | 0.59 | 2.79 | 0.44 | 1.06 | 0.58 | 0.41 | 0.27 | 16.27 |
1908 | 0.60 | 0.09 | 0.23 | 0.71 | 3.45 | 0.29 | 2.07 | 3.30 | 1.55 | 2.59 | 1.96 | 1.04 | 17.88 |
1909 | 0.11 | 1.21 | 3.96 | 3.60 | 1.85 | 1.67 | 3.18 | 2.42 | 4.51 | 0.55 | 1.56 | 1.72 | 26.34 |
1910 | 0.20 | 1.39 | 0.05 | 1.34 | 3.38 | 0.48 | 1.58 | 2.69 | 0.48 | 1.05 | 0.27 | 0.53 | 13.44 |
1911 | 0.73 | 1.56 | 0.64 | 2.68 | 0.90 | 1.30 | 1.69 | 1.24 | 0.26 | 1.59 | 0.72 | 0.20 | 13.51 |
1912 | 0.58 | 1.32 | 2.00 | 1.71 | 2.82 | 1.91 | 3.33 | 1.77 | 2.70 | 1.03 | 0.93 | 0.46 | 20.56 |
1913 | 0.49 | 1.28 | 0.71 | 1.58 | 1.85 | 0.48 | 4.04 | 0.54 | 2.62 | 2.24 | 0.00 | 4.20 | 20.03 |
1914 | 0.00 | 0.08 | 1.77 | 3.38 | 3.57 | 1.70 | 2.32 | 1.97 | 0.25 | 2.69 | 0.31 | 0.29 | 18.33 |
1915 | 0.39 | 1.31 | 1.68 | 4.46 | 3.83 | 1.78 | 2.58 | 1.67 | 3.02 | 1.83 | 0.25 | 1.50 | 24.30 |
1916 | 0.69 | 0.02 | 1.02 | 2.36 | 3.77 | 0.53 | 1.26 | 1.90 | 1.32 | 4.60 | 1.32 | 0.86 | 19.65 |
1917 | 0.31 | 0.54 | 1.75 | 2.81 | 6.17 | 0.13 | 0.48 | 0.20 | 0.13 | 0.95 | 0.10 | 0.42 | 13.99 |
1918 | 0.68 | 1.18 | 0.72 | 2.98 | 2.03 | 1.28 | 2.54 | 0.57 | 3.62 | 1.10 | 0.78 | 1.36 | 18.84 |
1919 | 0.00 | 0.32 | 1.49 | 1.65 | 0.88 | 1.10 | 7.46 | 0.95 | 0.88 | 1.31 | 2.07 | 0.50 | 18.61 |
1920 | 1.22 | 1.39 | 0.58 | 4.07 | 1.61 | 1.87 | 0.68 | 2.55 | 0.73 | 2.43 | 0.72 | 0.85 | 18.70 |
1921 | 0.11 | 0.31 | 0.77 | 4.81 | 1.50 | 3.62 | 1.53 | 2.00 | 0.17 | 1.13 | 0.98 | 1.46 | 18.39 |
1922 | 0.63 | 0.59 | 0.81 | 3.32 | 1.02 | 0.62 | 1.04 | 1.50 | Tr | 1.13 | 2.58 | 0.56 | 13.80 |
1923 | Tr | 1.71 | 2.29 | 1.29 | 3.47 | 4.44 | 2.46 | 2.68 | 0.84 | 5.43 | 0.40 | 0.88 | 25.89 |
1924 | 0.33 | 0.36 | 1.77 | 1.98 | 2.77 | Tr | 0.38 | 0.47 | 2.06 | 1.47 | 0.16 | 1.33 | 13.08 |
1925 | 0.06 | Tr | 0.35 | 0.25 | 1.61 | 1.86 | 2.10 | 1.83 | 2.24 | 4.72 | 0.99 | 1.18 | 17.19 |
1926 | 0.72 | 0.65 | 2.69 | 3.05 | 3.22 | 0.55 | 1.33 | 2.03 | 0.41 | 0.95 | 0.33 | 1.97 | 17.90 |
1927 | 0.22 | 0.47 | 2.66 | 3.46 | 1.72 | 3.47 | 2.39 | 1.26 | 1.29 | 0.86 | 0.95 | 0.69 | 19.44 |
1928 | 0.07 | 1.71 | 2.72 | 1.55 | 5.48 | 2.84 | 1.34 | 0.66 | 0.23 | 1.78 | 2.09 | 0.04 | 20.51 |
1929 | 0.36 | 0.73 | 2.57 | 1.60 | 1.50 | 1.75 | 4.06 | 2.61 | 1.79 | 1.70 | 1.89 | 0.66 | 21.22 |
1930 | 0.64 | 0.60 | 0.88 | 0.99 | 2.17 | 1.02 | 2.85 | 3.81 | 0.36 | 0.65 | 1.33 | 0.68 | 15.98 |
1931 | 0.00 | 1.81 | 1.59 | 1.60 | 3.67 | 2.18 | 1.07 | 0.53 | 0.20 | 0.71 | 0.85 | 0.02 | 14.23 |
1932 | 0.33 | 1.06 | 1.47 | 2.01 | 1.10 | 1.08 | 1.55 | 1.17 | 0.10 | 1.00 | 0.42 | 0.56 | 11.85 |
1933 | Tr | 0.26 | 1.28 | 4.15 | 3.94 | 0.30 | 0.55 | 1.61 | 2.46 | Tr | 0.40 | 1.13 | 16.08 |
1934 | 0.10 | 1.93 | 1.63 | 2.82 | 3.11 | 1.90 | 0.24 | 0.21 | 1.02 | 0.00 | 0.84 | 0.22 | 14.02 |
1935 | 0.08 | 0.51 | 0.14 | 2.80 | 7.04 | 0.80 | 0.33 | 1.09 | 1.40 | 1.46 | 0.78 | 0.01 | 16.44 |
1936 | 0.24 | 0.38 | 2.88 | 1.25 | 2.75 | 2.85 | 0.99 | 3.73 | 1.86 | 2.71 | 0.25 | 0.36 | 20.25 |
1937 | 0.34 | 0.58 | 0.83 | 2.01 | 2.31 | 3.91 | 0.82 | 0.91 | 0.69 | 0.58 | 0.44 | 2.16 | 15.58 |
1938 | 0.60 | 0.59 | 2.59 | 4.42 | 4.38 | 2.82 | 3.31 | 1.32 | 5.21 | 0.68 | 2.13 | 1.04 | 29.09 |
1939 | 0.83 | 0.88 | 1.68 | 1.94 | 1.74 | 0.84 | 0.27 | 0.94 | 0.69 | 0.99 | 0.05 | 0.26 | 11.11 |
1940 | 1.54 | 1.11 | 1.58 | 2.05 | 2.57 | 0.83 | 1.87 | 1.47 | 5.50 | 0.60 | 0.75 | 0.42 | 20.29 |
1941 | 1.12 | 0.29 | 2.92 | 4.08 | 2.07 | 1.53 | 2.51 | 2.54 | 2.22 | 3.13 | 0.71 | 0.87 | 23.99 |
1942 | 1.19 | 1.85 | 0.93 | 6.94 | 1.80 | 3.22 | 0.57 | 1.66 | 1.16 | 6.04 | 0.41 | 0.46 | 26.23 |
1943 | 0.10 | 0.33 | 1.19 | 1.36 | 4.85 | 1.17 | 2.33 | 3.08 | Tr | 0.04 | 0.96 | 0.34 | 15.75 |
1944 | 0.90 | 0.40 | 3.79 | 6.81 | 1.77 | 0.96 | 1.92 | 0.64 | Tr | 0.45 | 0.33 | 0.68 | 18.65 |
1945 | 1.26 | 0.66 | 1.07 | 4.12 | 3.86 | 2.05 | 2.35 | 3.86 | 0.69 | 1.46 | 0.61 | 0.66 | 22.65 |
1946 | 1.00 | 0.18 | 0.71 | 0.89 | 3.55 | 1.33 | 1.51 | 2.19 | 1.32 | 2.17 | 3.68 | 0.11 | 18.64 |
1947 | 0.57 | 1.16 | 2.66 | 1.34 | 4.35 | 4.07 | 0.83 | 1.37 | 0.72 | 3.74 | 1.23 | 0.66 | 22.70 |
1948 | 2.50 | 0.70 | 3.32 | 2.00 | 1.24 | 2.35 | 1.11 | 0.32 | 0.95 | 1.10 | 0.98 | 0.54 | 17.11 |
1949 | 1.66 | 0.17 | 2.54 | 2.17 | 3.69 | 7.40 | 1.16 | 0.36 | 0.26 | 1.52 | Tr | 0.29 | 21.22 |
1950 | 0.99 | 0.26 | 0.41 | 2.95 | 3.49 | 0.89 | 0.79 | 0.21 | 1.55 | 0.39 | 1.97 | 0.26 | 14.16 |
1951 | 1.12 | 1.01 | 2.40 | 2.73 | 1.93 | 2.63 | 1.40 | 7.49 | 0.88 | 2.77 | 1.51 | 1.54 | 27.41 |
1952 | 0.01 | 0.48 | 2.26 | 3.29 | 4.45 | 0.77 | 0.91 | 2.19 | 0.49 | 0.42 | 1.71 | 0.17 | 17.15 |
1953 | 0.46 | 0.92 | 1.60 | 2.22 | 2.69 | 1.33 | 2.84 | 1.07 | 0.01 | 0.56 | 1.14 | 1.17 | 16.01 |
1954 | 0.48 | 0.25 | 1.16 | 0.83 | 1.33 | 1.16 | 1.73 | 0.83 | 1.37 | 0.42 | 0.67 | 0.68 | 10.91 |
1955 | 0.39 | 1.41 | 2.14 | 0.22 | 2.49 | 1.88 | 1.33 | 1.50 | 1.05 | 0.56 | 1.42 | 0.86 | 15.25 |
1956 | 0.41 | 1.53 | 1.59 | 1.46 | 3.67 | 1.90 | 2.50 | 2.24 | 0.02 | 0.50 | 1.83 | 0.80 | 18.45 |
1957 | 1.05 | 1.28 | 0.63 | 6.85 | 9.27 | 0.93 | 0.92 | 1.97 | 0.85 | 2.48 | 1.12 | 0.08 | 27.43 |
1958 | 0.74 | 0.53 | 2.80 | 3.19 | 4.17 | 2.05 | 1.99 | 0.82 | 1.05 | 0.56 | 0.63 | 0.75 | 19.28 |
1959 | 1.01 | 1.29 | 1.91 | 2.08 | 3.73 | 0.64 | 0.82 | 1.35 | 3.01 | 2.18 | 0.72 | 0.11 | 18.85 |
1960 | 0.54 | 1.04 | 0.72 | 1.90 | 3.79 | 1.03 | 1.28 | 0.41 | 0.67 | 2.38 | 0.27 | 1.27 | 15.30 |
1961 | 0.43 | 0.70 | 2.68 | 0.73 | 3.70 | 2.17 | 2.31 | 2.06 | 4.89 | 1.04 | 1.25 | 0.43 | 22.39 |
1962 | 1.52 | 0.82 | 0.48 | 0.99 | 1.99 | 2.25 | 2.16 | 0.19 | 0.28 | 1.09 | 0.84 | 0.16 | 12.77 |
1963 | 0.96 | 0.40 | 1.81 | 0.15 | 1.37 | 4.62 | 0.69 | 2.34 | 2.96 | 0.34 | 0.70 | 0.61 | 16.95 |
1964 | 0.43 | 0.65 | 1.48 | 0.86 | 2.27 | 1.27 | 2.02 | 0.33 | 0.36 | 0.28 | 0.64 | 0.88 | 11.47 |
1965 | 0.73 | 1.19 | 2.11 | 2.38 | 1.42 | 2.49 | 5.20 | 0.23 | 2.84 | 0.18 | 0.26 | 0.44 | 19.47 |
1966 | 0.20 | 1.33 | 0.31 | 1.21 | 0.80 | 1.54 | 0.92 | 0.75 | 2.71 | 0.60 | 0.49 | 0.27 | 11.13 |
1967 | 0.61 | 0.49 | 0.82 | 2.10 | 4.46 | 4.98 | 2.97 | 3.94 | 1.02 | 1.58 | 0.73 | 1.19 | 24.89 |
1968 | 0.18 | 0.99 | 0.97 | 1.73 | 2.27 | 2.36 | 1.03 | 3.46 | 1.39 | 0.54 | 0.86 | 0.41 | 16.19 |
1969 | 0.29 | 0.22 | 0.53 | 1.14 | 8.66 | 5.34 | 2.75 | 0.73 | 0.76 | 5.39 | 0.92 | 0.79 | 27.52 |
1970 | 0.10 | 0.03 | 3.86 | 0.63 | 1.17 | 2.61 | 1.35 | 0.20 | 3.83 | 1.09 | 1.60 | 0.18 | 16.65 |
1971 | 0.51 | 1.36 | 0.78 | 6.01 | 2.00 | 0.41 | 1.37 | 0.10 | 4.21 | 0.72 | 0.56 | 0.66 | 18.69 |
1972 | 1.15 | 0.44 | 0.68 | 1.52 | 1.22 | 3.66 | 2.24 | 1.79 | 1.18 | 1.26 | 2.15 | 1.14 | 18.43 |
1973 | 1.09 | 0.17 | 1.74 | 4.42 | 4.88 | 0.48 | 1.14 | 0.32 | 2.31 | 0.69 | 1.84 | 1.13 | 20.21 |
1974 | 0.90 | 1.07 | 1.22 | 3.07 | Tr | 2.08 | 0.51 | 0.37 | 2.13 | 2.24 | 1.06 | 0.46 | 15.11 |
1975 | 0.45 | 0.88 | 1.23 | 2.85 | 4.33 | 2.01 | 1.67 | 1.31 | 1.06 | 0.68 | 1.20 | 0.57 | 18.24 |
1976 | 0.42 | 0.34 | 1.19 | 1.99 | 2.14 | 1.25 | 1.62 | 1.43 | 2.73 | 1.02 | 0.21 | 0.32 | 14.66 |
1977 | 0.08 | 0.45 | 0.53 | 3.32 | 0.93 | 0.66 | 4.75 | 1.48 | 0.15 | 0.40 | 0.61 | 0.13 | 13.49 |
1978 | 1.02 | 0.33 | 1.06 | 3.77 | 8.03 | 1.65 | 1.55 | 1.57 | 0.57 | 2.46 | 0.20 | 1.61 | 23.82 |
1979 | 0.59 | 0.06 | 2.57 | 2.21 | 6.67 | 3.02 | 1.69 | 1.77 | 0.57 | 1.35 | 2.00 | 1.70 | 24.20 |
1980 | 0.99 | 0.80 | 1.18 | 2.17 | 2.48 | 0.32 | 1.50 | 0.92 | 1.18 | 0.60 | 1.14 | 0.17 | 13.45 |
1981 | 0.19 | 0.37 | 2.31 | 1.16 | 4.47 | 1.75 | 1.97 | 1.20 | 1.45 | 1.28 | 0.21 | 0.55 | 16.91 |
1982 | 0.02 | 0.29 | 0.61 | 0.33 | 4.65 | 1.71 | 3.45 | 2.72 | 4.36 | 1.43 | 0.45 | 1.52 | 21.54 |
1983 | 0.07 | 0.23 | 4.60 | 2.88 | 5.54 | 2.55 | 2.84 | 0.78 | 0.38 | 0.30 | 3.46 | 0.88 | 24.51 |
1984 | 0.55 | 0.80 | 2.66 | 2.29 | 0.45 | 1.85 | 1.67 | 2.57 | 1.01 | 4.25 | 0.01 | 0.43 | 18.54 |
1985 | 0.99 | 0.89 | 1.43 | 1.82 | 1.37 | 1.91 | 1.99 | 0.03 | 2.86 | 1.07 | 1.95 | 1.13 | 17.44 |
1986 | 0.09 | 1.04 | 0.61 | 4.88 | 2.62 | 1.68 | 1.94 | 0.67 | 1.15 | 3.66 | 2.37 | 0.64 | 21.35 |
1987 | 1.17 | 2.44 | 2.42 | 2.55 | 2.12 | 6.04 | 1.26 | 1.99 | 1.13 | 0.94 | 1.79 | 1.97 | 25.82 |
1988 | 0.40 | 1.14 | 2.53 | 1.48 | 3.70 | 0.70 | 0.71 | 1.33 | 2.02 | 0.03 | 0.75 | 2.16 | 16.95 |
1989 | 1.19 | 1.27 | 0.97 | 1.95 | 2.68 | 2.93 | 1.43 | 1.63* | 3.54* | 1.40* | 0.09* | 1.54* | 20.62 |
1990 | 1.04* | 1.32* | 4.55 | 2.16 | 1.73 | 0.39 | 4.23 | 1.13 | 1.84 | 0.96 | 1.60 | 0.75 | 21.70 |
1991 | 1.05 | 0.15 | 0.43 | 2.41 | 2.90 | 3.59 | 3.11 | 2.08 | 1.21 | 0.93 | 3.30 | 0.01 | 21.17 |
1992 | 0.67 | Tr | 5.17 | 0.46 | 1.70 | 0.96 | 1.13 | 3.08 | 0.02 | 0.79 | 2.56 | 0.84 | 17.38 |
1993 | 0.25 | 0.90 | 2.15 | 2.56 | 1.73 | 3.38 | 1.40 | 1.04 | 3.32 | 2.42 | 2.17 | 0.55 | 21.87 |
1994 | 0.86 | 1.37 | 1.61 | 3.46 | 1.35 | 0.93 | 0.35 | 2.56 | 0.54 | 1.02 | 2.25 | 0.49 | 16.79 |
1995 | 0.64 | 1.53 | 1.21 | 5.45 | 9.59 | 4.03 | 0.72 | 1.45 | 2.96 | 0.59 | 1.51 | 0.25 | 29.93 |
1996 | 1.89 | 0.29 | 2.16 | 1.49 | 4.63 | 2.77 | 1.96 | 0.63 | 3.48 | 0.28 | 1.43 | 0.37 | 21.38 |
1997 | 0.87 | 1.83 | 0.91 | 5.77 | 2.19 | 3.69 | 1.14 | 5.27 | 1.92 | 2.70 | 1.52 | 0.68 | 28.49 |
1998 | 1.07 | 0.23 | 3.41 | 4.56 | 1.82 | 1.85 | 4.02 | 0.97 | 0.66 | 1.12 | 1.53 | 1.05 | 22.29 |
1999 | 0.65 | 0.08 | 1.09 | 7.55 | 1.84 | 0.82 | 2.54 | 5.54 | 2.62 | 1.33 | 0.81 | 1.01 | 25.88 |
2000 | 0.29 | 0.55 | 2.56 | 1.50 | 1.60 | 1.53 | 2.09 | 0.72 | 2.51 | 1.28 | 0.89 | 0.44 | 15.96 |
2001 | 0.73 | 0.86 | 2.01 | 3.02 | 3.62 | 1.09 | 1.76 | 1.64 | 1.77 | 0.40 | 1.02 | 0.36 | 18.28 |
2002 | 1.07 | 0.44 | 1.50 | 0.20 | 3.20 | 1.18 | 0.09 | 1.44 | 1.52 | 2.44 | 0.78 | 0.02 | 13.88 |
2003 | 0.09 | 1.52 | 5.44 | 2.99 | 2.62 | 2.69 | 0.71 | 3.52 | 0.35 | 0.45 | 0.80 | 0.84 | 22.02 |
2004 | 0.82 | 1.31 | 1.09 | 5.66 | 1.28 | 3.96 | 3.44 | 2.88 | 2.07 | 2.32 | 1.99 | 0.35 | 27.17 |
2005 | 1.40 | 0.31 | 1.22 | 3.86 | 1.91 | 2.68 | 0.42 | 1.63 | 0.52 | 2.80 | 0.34 | 0.43 | 17.52 |
2006 | 0.44 | 0.68 | 2.08 | 1.04 | 1.14 | 1.32 | 2.63 | 1.23 | 1.25 | 3.71 | 0.74 | 3.05 | 19.31 |
2007 | 1.68 | 0.86 | 1.69 | 2.24 | 1.79 | 0.38 | 0.80 | 1.82 | 1.92 | 1.38 | 0.47 | 2.10 | 17.13 |
2008 | 0.46 | 0.63 | 1.47 | 1.13 | 4.21 | 1.58 | 0.09 | 2.97 | 1.84 | 1.18 | 0.13 | 1.33 | 17.02 |
2009 | 0.62 | 0.27 | 1.89 | 5.88 | 3.08 | 2.70 | 1.42 | 0.33 | 0.42 | 3.26 | 0.93 | 1.39 | 22.19 |
2010 | 0.28 | 1.37 | 3.30 | 3.63 | 2.71 | 3.36 | 2.31 | 1.07 | 0.25 | 0.95 | 0.61 | 0.48 | 20.32 |
2011 | 0.96 | 1.02 | 0.33 | 2.41 | 5.16 | 1.35 | 2.87 | 1.08 | 2.56 | 1.65 | 0.98 | 1.92 | 22.29 |
2012 | 0.38 | 1.94 | 0.01 | 1.31 | 1.78 | 0.38 | 4.99 | 0.36 | 2.27 | 1.44 | 0.28 | 0.51 | 15.65 |
2013 | 0.27 | 1.13 | 1.72 | 4.14 | 2.66 | 0.61 | 1.03 | 1.40 | 18.16 | 2.24 | 0.29 | 0.5 | 34.15 |
2014 | 1.67 | 0.68 | 1.62 | 1.87 | 4.43 | 0.84 | 4.57 | 1.60 | 2.88 | 1.16 | 0.88 | 1.37 | 23.57 |
2015 | 0.38 | 3.69 | 0.38 | 4.50 | 7.82 | 1.76 | 2.98 | 0.31 | 0.14 | 2.02 | 1.83 | 1.11 | 27.39 |
2016 | 0.37 | 1.44 | 3.84 | 3.34 | 2.01 | 2.37 | 0.61 | 1.06 | 0.45 | 0.38 | 0.47 | 0.91 | 17.25 |
2017 | 1.41 | 0.73 | 1.45 | 3.15 | 6.29 | 0.45 | 1.30 | 1.62 | 1.92 | 2.42 | 0.57 | 0.68 | 21.89 |
2018 | 0.74 | 1.04 | 2.23 | 1.35 | 4.76 | 1.82 | 1.84 | 0.24 | 1.02 | 2.68 | 1.19 | 0.34 | 19.01 |
2019 | 1.57 | 0.74 | 2.83 | 1.87 | 3.89 | 2.12 | 2.21 | 0.10 | 0.56 | 2.42 | 2.38 | 0.35 | 21.04 |
2020 | 0.0 | 2.19 | 2.88 | 3.17 | 2.30 | 2.10 | 0.34 | 0.48 | 1.56 | 0.77 | 0.79 | 0.52 | 17.10 |
2021 | 0.40 | 1.28 | 2.99 | 3.20 | 5.76 | 1.99 | 3.20 | 0.66 | 0.54 | 0.17 | 0.07 | 0.42 | 20.68 |
2022 | 1.56 | 2.17 | 1.67 | 0.12 | 3.19 | 0.94 | 2.44 | 1.46 | 1.49 | 0.52 | 1.42 | 1.81 | 18.79 |
2023 | 0.88 | 0.91 | 0.35 | 2.27 | 5.52 | 5.04 | 1.45 | 2.12 | 2.32 | 0.63 | 0.49 | 0.83 | 22.81 |
2024 | 0.70 | 2.46 | 3.93 | 4.45 | 0.44 | 0.27 | 0.26 | 2.22 | 1.32 | 0.13 | 2.64 | | 18.82 |
1991-2020 climatology
Type | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | YEAR TOTAL |
Total | 0.79 | 0.99 | 1.99 | 3.03 | 3.24 | 1.94 | 1.83 | 1.68 | 2.07 | 1.62 | 1.18 | 0.80 | 21.16 |
Total/Day | 0.0255 | 0.035 | 0.0642 | 0.101 | 0.105 | 0.0647 | 0.059 | 0.0541 | 0.069 | 0.0523 | 0.0393 | 0.0258 | 0.058 |
STD (Total) | 0.51 | 0.77 | 1.28 | 1.78 | 2.02 | 1.13 | 1.31 | 1.35 | 3.21 | 0.93 | 0.78 | 0.66 | N/A |
1971-2000 climatology
Type | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | YEAR TOTAL |
Mean | 0.70 | 0.75 | 1.85 | 2.93 | 3.05 | 2.02 | 1.93 | 1.62 | 1.84 | 1.31 | 1.39 | 0.84 | 20.23 |
STD | 0.43 | 0.58 | 1.23 | 1.68 | 2.19 | 1.31 | 1.06 | 1.26 | 1.19 | 0.95 | 0.90 | 0.55 | N/A |
1897-1994 climatology
Type | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | YEAR TOTAL |
Mean | 0.73 | 0.78 | 1.68 | 2.54 | 2.98 | 1.88 | 1.85 | 1.55 | 1.52 | 1.49 | 1.02 | 0.77 | 18.61 |
STD | 0.45 | 0.52 | 1.05 | 1.65 | 1.76 | 1.35 | 1.19 | 1.44 | 1.34 | 1.25 | 0.82 | 0.63 | N/A |
* Data not from standard site
** Data for 1893 probably from Longmont which has generally lower precip than Boulder
Tr= Trace
STD= standard deviation
Data was obtained from
GCPS (1893-1990) and the local station report(1991-1995).