.T WR8STATIONHIST 2111081029/
Department of Water Resources
Division of Flood Management, Hydrology Branch
Northern Sierra 8 Station
Chronological monthly precipitation [in]
Average of: Mt. Shasta City, Shasta Dam, Mineral, Brush Creek RS,
Quincy, Sierraville RS, Pacific House, Blue Canyon
1921-2021
WY Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Total
1921 5.25 12.38 11.52 13.12 3.76 5.30 0.94 3.05 0.65 0.00 0.00 0.02 55.99
1922 1.39 3.16 11.22 3.21 14.42 8.37 1.58 2.22 0.98 0.14 0.08 0.01 46.78
1923 3.59 6.01 11.79 5.95 1.93 0.49 6.86 0.93 2.09 0.20 0.40 2.75 42.99
1924 2.15 0.46 2.77 3.55 3.94 2.67 0.89 0.05 0.08 0.00 0.14 0.40 17.10
1925 6.63 4.71 6.01 3.47 15.21 4.51 5.46 2.14 1.52 0.11 0.83 2.45 53.05
1926 1.90 3.53 2.88 5.63 11.55 0.61 6.45 1.49 0.00 0.00 0.24 0.08 34.36
1927 2.98 18.82 3.51 9.08 14.70 4.01 7.05 1.63 1.00 0.00 0.03 0.37 63.18
1928 4.31 10.83 3.82 4.81 3.45 12.84 4.21 0.63 0.42 0.00 0.05 0.35 45.72
1929 1.02 5.65 5.71 2.33 4.00 3.65 4.10 0.10 2.84 0.00 0.01 0.00 29.41
1930 0.73 0.00 18.32 7.65 5.59 4.45 4.62 1.88 0.13 0.02 0.03 2.10 45.52
1931 0.60 4.58 1.37 7.90 3.16 4.21 1.40 2.08 2.10 0.03 0.00 0.59 28.02
1932 3.64 3.76 15.48 5.60 2.92 2.61 3.88 3.58 0.46 0.10 0.00 0.00 42.03
1933 0.29 3.22 4.09 9.45 1.59 8.35 1.28 3.31 0.07 0.12 0.00 0.50 32.27
1934 4.56 0.01 12.00 3.84 6.89 2.71 2.30 1.56 1.47 0.01 0.14 0.82 36.31
1935 3.66 9.05 3.73 10.22 4.54 6.40 9.68 0.84 0.03 0.03 0.08 0.29 48.55
1936 2.44 1.75 5.19 14.71 16.22 2.13 3.34 1.46 2.83 0.16 0.07 0.56 50.86
1937 0.21 0.05 5.03 7.15 12.05 9.15 4.03 0.55 2.66 0.06 0.00 0.02 40.96
1938 3.54 14.02 12.53 6.38 19.48 14.17 3.39 0.96 0.23 0.13 0.00 0.72 75.55
1939 4.04 3.04 2.49 5.34 3.03 5.14 0.43 2.44 0.40 0.05 0.02 1.30 27.72
1940 2.93 0.79 7.17 17.02 18.37 13.27 2.00 1.52 0.29 0.00 0.04 1.14 64.54
1941 3.27 4.29 18.85 13.69 12.29 6.73 7.12 3.85 1.27 0.37 0.09 0.43 72.25
1942 1.59 4.64 18.47 11.65 11.01 3.17 8.70 5.90 0.21 0.00 0.01 0.07 65.42
1943 0.58 10.07 7.72 14.68 3.57 8.80 3.92 1.14 2.13 0.28 0.01 0.02 52.92
1944 2.13 2.66 2.58 6.42 9.52 3.94 3.63 1.42 1.98 0.23 0.09 0.19 34.79
1945 3.67 10.06 6.65 2.02 12.04 5.97 1.29 4.13 1.51 0.05 0.03 0.16 47.58
1946 8.66 8.21 16.35 3.00 4.19 5.21 0.52 1.34 0.02 0.48 0.00 0.49 48.47
1947 1.44 9.32 4.96 1.88 5.65 9.36 1.53 0.89 2.94 0.12 0.15 0.18 38.42
1948 9.12 1.84 1.48 7.95 3.24 8.36 13.00 3.33 1.30 0.25 0.09 0.68 50.64
1949 1.05 4.80 6.67 2.29 6.28 10.71 0.49 2.46 0.09 0.02 0.38 0.22 35.46
1950 0.31 3.71 2.82 14.19 6.86 7.18 4.62 2.39 0.98 0.03 0.02 0.78 43.89
1951 11.06 13.70 11.85 10.31 6.66 3.78 2.72 2.97 0.01 0.00 0.41 0.13 63.60
1952 6.04 9.39 16.55 16.36 8.03 8.54 1.62 1.89 2.05 0.40 0.00 0.54 71.41
1953 0.38 3.89 15.66 14.26 0.66 6.88 6.11 4.10 1.28 0.02 0.58 0.04 53.86
1954 2.45 7.02 2.52 12.36 8.33 8.57 5.58 0.12 1.77 0.01 1.05 0.31 50.09
1955 0.72 6.82 9.34 5.63 3.38 2.04 6.14 0.80 0.27 0.10 0.00 0.90 36.14
1956 1.02 6.59 30.83 16.11 10.31 0.86 2.29 4.05 0.46 0.17 0.01 0.67 73.37
1957 6.43 0.19 1.59 6.84 11.10 6.68 3.62 7.40 0.19 0.00 0.00 3.73 47.77
1958 5.17 3.75 8.59 9.44 18.64 11.77 7.07 1.43 2.90 0.76 0.18 0.69 70.39
1959 0.71 2.17 3.01 13.63 10.86 2.56 1.93 1.86 0.09 0.09 0.28 3.90 41.09
1960 0.11 0.01 2.85 9.93 11.83 8.99 2.63 2.94 0.00 0.09 0.03 0.21 39.62
1961 1.23 8.61 5.53 4.27 5.32 7.41 2.45 2.90 0.61 0.13 0.40 0.38 39.24
1962 1.50 6.10 5.19 3.80 17.91 6.60 1.46 1.49 0.32 0.13 0.46 0.45 45.41
1963 17.12 3.28 6.26 6.44 6.53 7.66 11.55 2.58 1.28 0.01 0.06 0.78 63.55
1964 3.75 11.71 1.07 8.33 0.52 3.74 1.24 3.01 1.64 0.14 0.10 0.30 35.55
1965 1.77 9.75 26.71 10.61 1.81 2.85 7.70 0.59 0.73 0.14 2.25 0.28 65.19
1966 0.37 12.55 5.92 7.11 4.15 2.98 2.15 0.47 0.12 0.05 0.09 0.23 36.19
1967 0.02 13.91 9.31 15.11 0.88 10.94 8.21 1.75 2.37 0.01 0.11 0.41 63.03
1968 2.49 4.12 6.46 10.06 6.94 5.17 0.44 1.45 0.69 0.08 1.94 0.10 39.94
1969 4.12 6.40 12.15 22.96 12.48 2.26 4.04 0.30 1.38 0.08 0.00 0.08 66.25
1970 3.31 2.75 16.86 25.05 3.99 4.07 1.90 0.44 1.44 0.00 0.03 0.13 59.97
1971 3.03 14.95 14.14 5.93 0.78 9.76 2.70 3.32 1.53 0.12 0.09 1.11 57.46
1972 0.77 5.35 9.28 4.26 5.03 2.99 4.47 1.43 0.70 0.00 0.14 1.83 36.25
1973 3.93 8.18 6.25 14.49 10.37 4.56 0.91 0.88 0.24 0.06 0.35 1.43 51.65
1974 4.85 21.55 10.24 12.75 4.42 16.00 4.38 0.40 0.42 3.26 0.28 0.00 78.55
1975 2.50 3.00 5.08 3.70 14.17 12.35 4.83 0.74 0.45 0.27 1.46 0.24 48.79
1976 6.78 2.68 2.28 0.74 5.93 2.42 2.70 0.16 0.25 0.09 2.91 1.36 28.30
1977 0.48 1.52 0.33 3.14 3.18 2.57 0.76 3.23 0.34 0.16 0.40 2.93 19.04
1978 0.71 4.88 12.54 20.83 8.03 10.64 8.24 1.37 0.61 0.29 0.08 3.34 71.56
1979 0.02 3.12 2.17 8.90 11.37 5.85 3.61 2.49 0.13 0.22 0.99 0.22 39.09
1980 6.77 5.31 8.13 12.80 14.91 3.88 3.36 2.17 1.19 0.51 0.07 0.46 59.56
1981 1.39 1.71 6.98 10.40 4.39 7.06 1.75 2.52 0.08 0.02 0.00 1.33 37.63
1982 7.06 19.99 14.39 7.93 8.02 11.61 10.13 0.38 1.66 0.50 0.23 2.92 84.82
1983 7.90 9.82 11.28 12.07 16.10 20.10 6.40 1.62 0.67 0.23 0.79 1.51 88.49
1984 3.08 18.70 18.20 0.59 6.29 4.70 2.97 0.95 1.24 0.40 0.68 0.27 58.07
1985 4.23 13.94 1.90 1.30 5.06 6.76 0.52 0.25 0.29 0.48 0.19 2.90 37.82
1986 2.38 6.65 5.25 10.77 27.14 10.58 1.64 2.70 0.07 0.15 0.02 4.72 72.07
1987 1.15 0.76 2.07 6.07 7.17 8.97 0.74 1.06 0.17 0.38 0.01 0.01 28.56
1988 0.99 3.32 12.72 7.61 0.46 1.32 4.27 2.65 1.11 0.29 0.00 0.12 34.86
1989 0.17 13.21 4.62 2.81 3.02 17.27 2.40 1.26 1.08 0.01 0.59 3.69 50.13
1990 6.29 3.08 0.07 7.88 4.60 3.19 1.83 7.55 0.29 0.12 0.54 0.53 35.97
1991 1.10 1.56 1.39 0.88 3.11 17.94 1.81 2.51 1.20 0.40 0.22 0.05 32.17
1992 3.44 2.64 3.97 2.81 11.84 5.35 2.67 0.12 2.73 0.20 0.16 0.08 36.01
1993 4.77 1.15 14.41 16.53 10.26 7.57 3.66 4.27 2.31 0.00 0.38 0.01 65.32
1994 2.65 2.81 7.34 4.10 7.62 1.53 2.87 1.96 0.32 0.01 0.00 0.62 31.83
1995 0.77 8.62 7.57 27.14 1.94 22.85 8.53 4.62 3.05 0.30 0.00 0.00 85.39
1996 0.01 0.57 13.90 12.44 14.07 5.88 5.86 6.97 0.48 0.14 0.01 0.98 61.31
1997 2.53 7.85 28.89 18.95 0.97 2.25 2.38 0.75 2.37 0.19 0.71 0.92 68.76
1998 3.25 9.45 4.79 18.82 21.22 8.63 5.40 7.47 2.02 0.02 0.03 1.30 82.40
1999 1.51 12.69 4.69 10.03 15.15 5.45 3.24 0.93 0.54 0.10 0.34 0.08 54.75
2000 2.72 6.78 1.53 14.31 19.08 3.66 3.66 2.54 0.82 0.21 0.07 1.32 56.70
2001 4.71 1.86 2.62 5.05 9.45 3.76 3.71 0.11 0.87 0.03 0.00 0.80 32.97
2002 1.82 10.93 14.31 5.41 3.99 5.76 2.08 1.72 0.17 0.02 0.03 0.10 46.34
2003 0.01 6.95 23.84 5.21 3.02 6.27 10.52 2.17 0.12 0.16 1.25 0.25 59.77
2004 0.14 5.37 15.85 5.69 14.48 2.23 1.67 1.15 0.23 0.04 0.05 0.39 47.29
2005 6.95 2.65 10.94 8.33 4.44 9.25 3.53 8.29 2.64 0.00 0.01 0.48 57.51
2006 1.47 6.53 25.82 9.80 8.00 14.50 12.14 1.53 0.35 0.01 0.00 0.00 80.15
2007 0.51 5.65 8.49 1.44 13.60 1.65 3.09 1.16 0.37 0.50 0.01 0.74 37.21
2008 3.62 1.18 7.18 12.60 6.89 1.58 0.68 1.13 0.02 0.00 0.10 0.01 34.99
2009 3.11 5.50 6.10 3.10 11.90 8.30 1.70 5.50 1.30 0.03 0.17 0.14 46.85
2010 4.70 2.10 6.80 13.60 7.10 6.25 8.14 4.07 0.39 0.08 0.08 0.28 53.59
2011 7.50 8.00 16.44 2.08 8.49 18.71 3.15 4.60 3.18 0.08 0.00 0.47 72.70
2012 3.88 2.71 0.34 7.62 2.97 15.70 6.45 0.51 1.16 0.20 0.04 0.03 41.61
2013 2.54 11.14 18.30 1.35 0.77 3.67 2.00 1.25 1.71 0.01 0.04 1.48 44.26
2014 0.72 1.66 0.92 1.20 10.70 10.21 2.64 0.75 0.05 0.22 0.64 1.60 31.31
2015 3.70 3.90 15.20 0.30 7.60 1.00 2.30 1.20 0.80 0.70 0.10 0.40 37.20
2016 1.20 3.70 11.80 16.10 2.70 16.40 2.80 2.20 0.90 0.00 0.00 0.00 57.80
2017 12.60 5.40 11.60 23.60 23.40 6.90 9.60 0.50 0.80 0.00 0.10 0.40 94.90
2018 0.80 11.10 0.70 7.00 1.70 12.60 4.80 1.80 0.30 0.10 0.00 0.05 40.95
2019 1.02 6.79 5.06 13.18 21.61 9.82 3.83 6.67 0.46 0.00 0.21 2.07 70.72
2020 0.26 1.97 10.69 4.81 0.02 6.29 2.81 4.30 0.38 0.09 0.11 0.00 31.73
2021 0.01 3.49 3.63 6.87 4.04 4.06 0.75 0.18 0.08 0.08 0.01 0.80 24.00
1991-2020 average:
Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Total
month 2.8 5.3 10.0 9.1 8.9 8.1 4.3 2.8 1.1 0.1 0.2 0.5 53.2
accum 2.8 8.1 18.1 27.2 36.1 44.2 48.5 51.3 52.4 52.5 52.7 53.2
Note:
(1) Monthly totals may not add up to the seasonal total because of rounding.
.END
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