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Monthly Rainfall (Precipitation)
Pasadena, California
1906-2019

Also see:
Monthly Precipitation for Downtown Los Angeles
Monthly Precipitation for Los Angeles International Airport
Monthly Precipitation for Catalina Airport
Monthly Precipitation for Hollywood Burbank Airport
Monthly Precipitation for Lancaster Airfield
Monthly Precipitation for Long Beach Airport
Monthly Precipitation for Palmdale Airport
Monthly Precipitation for Sandberg
Monthly Precipitation for UCLA
Monthly Precipitation for Van Nuys Airport
Monthly Precipitation for Woodland Hills

Quantity is measured in inches

Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
Season Avg.* 0.03 0.08 0.37 0.69 1.60 3.15 4.36 4.51 3.17 1.41 0.43 0.13 19.74
2018-2019 0.00 0.00 0.00 0.39 2.00 2.68 6.77 11.08 2.58 --- --- --- 25.50(1)
2017-2018 0.00 0.05 0.08 0.03 0.04 0.00 2.84 0.25 4.24 0.01 0.50 0.00 8.04
2016-2017 0.00 0.00 0.01 0.36 1.22 4.38 9.24 4.63 0.23 0.05 1.01 0.00 21.13
2015-2016 0.64 0.00 1.90 1.03 0.19 1.09 3.35 1.66 3.65 0.61 0.61 0.01 14.74
2014-2015 0.00 0.03 0.54 0.00 0.10 7.66 1.51 1.53 1.67 0.03 1.19 0.06 14.32
2013-2014 0.00 0.00 0.03 0.17 1.08 0.94 0.01 3.65 1.75 0.39 0.00 0.01 8.03
2012-2013 0.01 0.02 0.00 0.47 1.11 3.38 1.86 0.71 1.36 0.00 0.08 0.01 9.01
2011-2012 0.00 0.01 0.00 1.68 2.55 1.17 1.27 0.74 2.64 3.14 0.18 0.00 13.38
2010-2011 0.00 0.00 0.00 1.85 0.86 15.10 0.99 4.35 4.49 0.00 0.53 0.18 28.35
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
2009-2010 0.00 0.00 0.00 1.32 0.00 5.50 8.19 6.40 1.24 2.42 0.04 0.00 25.11
2008-2009 0.00 0.00 0.03 0.07 3.55 3.77 0.82 6.91 0.73 0.09 0.00 0.15 16.12
2007-2008 0.05 0.03 1.58 0.57 0.82 3.03 13.79 1.66 0.11 0.03 0.73 0.00 22.40
2006-2007 0.00 0.01 0.00 0.03 0.10 0.32 0.55 2.40 0.12 0.59 0.05 0.00 4.17
2005-2006 0.00 0.02 0.35 0.77 0.17 0.75 3.67 4.01 2.22 4.45 0.98 0.04 17.43
2004-2005 0.00 0.00 0.00 8.77 1.60 9.54 15.89 15.45 2.94 1.43 0.00 0.00 55.62
2003-2004 0.04 0.00 0.00 0.60 1.14 2.15 0.26 8.21 1.27 0.52 0.00 0.01 14.20
2002-2003 0.00 0.03 0.63 0.00 2.50 2.92 0.00 7.04 4.03 1.26 1.04 0.53 19.98
2001-2002 0.08 0.00 0.00 0.06 2.60 1.26 1.88 0.41 0.43 0.15 0.25 0.12 7.24
2000-2001 0.00 0.04 0.38 1.29 0.00 T 5.06 8.43 1.31 2.13 0.00 0.00 18.64
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1999-2000 0.02 0.00 0.00 0.00 0.43 0.35 1.08 9.70 3.42 2.71 0.17 0.00 17.88
1998-1999 0.00 0.48 0.04 0.00 1.52 0.53 2.26 1.02 1.48 2.88 0.17 1.18 11.56
1997-1998 0.00 0.00 0.70 0.04 2.84 3.74 4.07 16.87 4.06 2.06 4.41 0.38 39.17
1996-1997 T 0.00 0.00 1.18 2.42 5.86 6.99 0.25 0.00 0.00 0.00 0.12 16.82
1995-1996 0.01 0.00 0.01 0.00 0.07 2.48 3.20 8.38 2.97 0.68 0.03 0.00 17.83
1994-1995 0.00 0.00 0.00 0.72 0.63 1.00 18.46 2.18 9.89 1.50 0.18 1.93 36.49
1993-1994 0.00 0.00 0.00 0.19 1.17 1.35 0.40 4.25 2.19 0.96 0.39 0.05 10.95
1992-1993 0.82 0.00 0.00 1.67 0.00 6.45 15.99 9.19 4.11 0.00 0.02 1.25 39.50
1991-1992 0.21 0.08 0.15 1.17 0.05 3.68 2.73 12.47 9.14 0.32 0.14 0.04 30.18
1990-1991 0.00 0.15 0.08 T 0.74 0.09 2.02 5.30 10.01 0.05 0.04 0.00 18.48
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1989-1990 0.00 0.00 0.96 0.55 0.44 0.00 2.83 4.35 0.34 1.19 1.47 T 12.13
1988-1989 0.00 0.06 0.07 0.00 1.76 4.91 1.05 2.45 1.19 0.06 0.17 0.06 11.78
1987-1988 0.19 0.10 0.17 3.34 2.50 2.79 2.61 2.17 0.95 3.19 0.06 0.00 18.07
1986-1987 0.11 0.00 1.98 1.61 1.33 0.48 2.22 1.91 1.54 0.35 0.08 0.11 11.72
1985-1986 0.00 0.00 0.15 0.75 4.28 0.22 3.59 5.77 6.91 0.65 0.00 T 22.32
1984-1985 0.00 0.64 0.72 0.09 3.14 7.74 0.96 1.89 1.43 0.00 0.31 0.00 16.92
1983-1984 0.00 1.92 2.18 1.27 2.89 4.42 0.20 0.00 0.49 0.49 0.00 0.16 14.02
1982-1983 0.00 0.00 1.99 0.45 3.80 1.59 8.86 6.19 12.60 7.77 0.29 0.08 43.62
1981-1982 0.00 0.00 0.08 0.66 2.49 0.77 3.40 0.77 6.73 3.00 0.42 0.21 18.53
1980-1981 0.04 0.00 T 0.01 0.00 1.00 3.23 1.42 5.26 0.71 0.03 0.02 11.72
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1979-1980 0.00 T 0.00 0.92 0.30 0.88 11.10 19.70 5.62 0.60 0.47 0.00 39.59
1978-1979 0.00 0.00 0.77 0.19 2.19 1.99 7.74 4.26 ---(2) 0.02 0.03 0.09 17.28(3)
1977-1978 0.00 2.27 T 0.02 0.13 5.85 8.99 9.37 12.86 ---(2) 0.09 T 39.58(3)
1976-1977 0.03 0.24 3.93 1.44 0.83 0.75 4.46 0.24 1.96 T 3.68 0.01 17.57
1975-1976 0.00 0.00 0.01 0.38 0.11 0.53 0.00 4.80 2.33 1.15 0.12 0.15 9.58
1974-1975 0.01 0.00 T 0.92 0.02 3.99 0.10 2.62 5.97 1.68 0.15 0.03 15.49
1973-1974 0.00 0.03 T 0.26 ---(2) 0.66 10.49 0.10 4.61 0.40 0.09 0.01 16.65
1972-1973 0.00 0.39 0.03 0.25 3.53 2.25 4.09 11.15 4.34 0.03 0.07 0.06 26.19
1971-1972 T T 0.00 0.23 0.35 7.05 0.01 0.05 0.00 0.19 0.02 0.44 8.34
1970-1971 0.00 0.00 0.00 0.03 6.54 5.48 1.39 1.10 0.78 0.46 0.50 0.05 16.33
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1969-1970 0.01 0.00 T T 1.41 0.11 1.77 4.52 3.51 0.05 T 0.05 11.43
1968-1969 0.01 0.00 0.00 0.35 0.43 0.91 16.74 11.30 1.82 0.84 0.14 0.22 32.76
1967-1968 0.00 0.00 0.27 0.00 8.43 1.51 1.01 0.97 3.33 0.63 0.11 0.07 16.33
1966-1967 0.00 0.00 0.42 0.05 3.76 6.25 6.59 0.12 3.66 5.04 0.18 0.13 26.20
1965-1966 0.07 0.07 1.24 0.00 13.74 6.75 0.92 1.42 0.65 0.03 0.25 0.00 25.14
1964-1965 0.00 0.00 T 0.47 2.75 1.82 0.86 0.48 1.47 6.83 0.15 0.09 14.92
1963-1964 0.00 T 1.51 0.99 2.44 0.02 2.70 0.04 2.43 1.56 0.03 0.30 12.02
1962-1963 0.00 0.00 0.00 0.19 T 0.05 0.48 4.84 2.35 1.91 T 0.36 10.18
1961-1962 0.00 0.06 0.04 0.00 1.12 2.66 3.42 13.14 1.69 T 0.73 0.03 22.89
1960-1961 0.00 0.00 0.00 0.11 4.07 0.16 1.51 T 0.88 0.45 T 0.00 7.18
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1959-1960 T 0.00 T T 0.05 1.63 3.03 2.25 0.56 1.76 0.04 0.01 9.33
1958-1959 0.00 0.20 0.10 1.02 0.12 T 2.84 5.30 0.00 0.65 T 0.03 10.26
1957-1958 T 0.00 0.00 1.97 0.69 3.76 2.56 10.05 5.93 5.62 T 0.00 30.58
1956-1957 0.00 0.01 0.00 0.62 0.00 0.31 6.00 3.12 1.89 2.08 1.43 0.18 15.64
1955-1956 0.00 0.05 T 0.00 1.81 1.65 9.05 1.21 0.00 4.03 0.90 0.00 18.70
1954-1955 T T T T 2.16 1.17 5.75 1.29 1.51 1.63 2.42 0.07 16.00
1953-1954 T 0.00 0.00 T 1.36 0.34 6.67 3.17 4.40 0.28 0.07 0.18 16.47
1952-1953 0.00 T 0.13 T 5.15 4.57 1.53 0.30 0.99 1.22 0.02 0.07 13.98
1951-1952 T 0.21 0.00 0.67 1.93 6.74 14.96 0.66 8.53 3.13 0.00 T 36.83
1950-1951 0.13 0.00 0.82 0.48 1.72 0.03 3.74 1.32 1.02 2.35 0.19 T 11.80
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1949-1950 0.00 T T 0.07 2.55 4.27 3.18 2.42 1.29 0.69 0.14 0.12 14.73
1948-1949 0.00 0.00 0.00 0.60 0.00 3.04 3.52 1.68 1.71 0.08 1.19 T 11.82
1947-1948 0.00 0.10 0.16 0.15 0.27 1.81 0.01 2.08 3.63 2.06 0.02 0.50 10.79
1946-1947 T 0.00 0.01 1.51 10.25 5.79 0.46 0.63 0.96 0.29 0.48 0.06 20.44
1945-1946 T 0.50 T 0.69 0.24 7.02 0.24 2.27 5.28 0.65 0.10 T 16.99
1944-1945 0.00 T 0.03 0.03 5.47 1.18 0.06 5.09 4.04 0.35 T 0.15 16.40
1943-1944 0.00 0.00 0.01 0.40 0.05 7.90 0.90 10.85 3.72 1.31 T 0.30 25.44
1942-1943 0.00 0.51 T 1.14 0.41 1.26 16.43 5.51 6.76 1.23 0.03 0.05 33.33
1941-1942 0.02 0.07 T 1.73 0.16 6.42 0.45 1.12 1.69 3.03 0.02 T 14.71
1940-1941 0.00 0.00 T 1.96 0.62 7.72 2.66 16.77 11.43 5.08 0.06 0.02 46.32
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1939-1940 0.00 0.00 5.88 0.45 0.15 0.69 5.76 6.05 1.50 2.12 0.01 0.00 22.61
1938-1939 0.00 T 0.01 0.05 0.01 9.95 4.48 1.33 1.38 0.39 0.24 0.00 17.84
1937-1938 T T 0.00 0.00 T 4.75 1.89 11.23 12.61 0.75 0.09 0.06 31.38
1936-1937 T T 0.02 2.28 0.06 9.60 2.97 8.04 5.22 0.33 0.29 T 28.81
1935-1936 0.17 0.09 T 0.31 0.93 0.78 0.39 9.84 2.45 0.91 0.00 0.10 15.97
1934-1935 0.00 0.01 0.25 4.03 2.29 5.94 4.39 2.64 3.01 4.37 0.05 0.00 26.98
1933-1934 0.00 0.01 0.01 0.48 0.20 10.34 6.42 3.18 0.03 0.08 0.00 0.39 21.14
1932-1933 0.00 0.00 0.30 0.10 0.00 1.77 12.54 0.05 0.12 0.82 0.33 0.32 16.35
1931-1932 0.00 0.10 0.18 0.54 3.22 6.63 2.36 8.23 0.24 0.55 0.05 0.25 22.35
1930-1931 0.00 0.00 T 0.16 2.37 0.00 4.37 5.47 0.02 3.98 0.87 0.11 17.35
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1929-1930 0.00 0.00 0.54 0.02 0.00 0.00 6.25 0.59 5.85 0.64 2.42 0.02 16.33
1928-1929 0.00 0.00 0.00 0.68 1.93 3.01 1.53 1.93 2.99 3.62 0.00 0.19 15.88
1927-1928 0.00 0.00 T 0.42 0.70 3.52 0.09 3.35 2.22 0.74 0.53 0.24 11.81
1926-1927 0.03 0.01 0.00 0.09 5.09 2.70 0.97 11.74 3.03 1.30 0.21 0.00 25.17
1925-1926 0.00 0.00 T 0.65 0.92 3.30 2.59 3.43 0.60 10.04 0.33 T 21.86
1924-1925 0.00 0.00 0.00 1.00 1.74 1.84 0.31 0.97 2.13 3.78 0.70 0.38 12.85
1923-1924 0.00 0.00 0.54 0.63 0.11 0.65 1.30 0.11 4.74 1.51 0.00 0.00 9.59
1922-1923 0.01 0.00 0.00 0.54 1.82 4.97 2.08 0.92 0.58 2.52 0.00 0.04 13.48
1921-1922 0.01 T 0.25 1.51 0.08 12.46 6.49 5.21 2.31 0.32 0.91 0.06 29.61
1920-1921 0.00 0.00 0.08 1.02 1.15 1.46 4.96 1.10 3.72 0.56 5.36 0.00 19.41
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1919-1920 ---(2) ---(2) 2.70 0.62 1.22 2.94 0.51 3.59 6.25 1.37 0.19 0.00 19.39
1918-1919 0.45 0.06 1.20 T 2.19 1.77 1.34 2.53 2.91 0.62 0.36 0.00 13.43
1917-1918 T T T T 0.33 0.05 0.36 8.34 9.43 0.25 1.07 T 19.83
1916-1917 0.00 T 0.47 3.98 0.29 4.46 3.09 4.67 0.49 1.08 0.89 ---(2) 19.42
1915-1916 0.00 0.00 T 0.00 2.03 2.99 16.45 1.96 1.36 0.13 0.10 T 25.02
1914-1915 0.04 0.00 0.04 0.70 0.25 4.34 6.87 5.86 0.87 1.61 1.44 T 22.02
1913-1914 0.01 0.06 0.14 0.01 3.20 1.84 15.07 11.44 0.82 0.92 0.46 0.15 34.12
1912-1913 T 0.00 0.00 0.69 0.56 0.30 3.13 11.20 0.35 0.92 0.13 0.76 18.04
1911-1912 0.00 0.00 1.81 0.11 0.08 0.95 0.18 0.00 11.83 2.62 0.22 0.00 17.80
1910-1911 0.02 0.00 0.05 0.75 0.28 0.15 9.82 4.70 7.59 0.71 0.02 0.06 24.15
Season Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Season Total
1909-1910 0.12 0.06 0.08 0.65 2.25 8.66 2.96 0.31 2.56 0.32 0.00 0.02 17.99
1908-1909 0.00 0.02 1.94 0.26 1.18 1.58 10.45 6.60 4.99 0.07 0.00 0.20 27.29
1907-1908 ---(2) ---(2) ---(2) 1.56 ---(2) 0.84 6.68 5.26 0.55 0.70 T 0.00 15.59(3)
1906-1907 0.04 ---(2) ---(2) ---(2) 0.16 9.57 11.18 ---(2) ---(2) 0.30 ---(2) 0.03 21.28(3)

* Average as calculated by Western Regional Climate Center for rainfall seasons 1906-2019.
(1) Seasonal rainfall through latest full month.
(2) At least 26 days or more of data were missing for this month.
(3) Due to one or more months of missing data this season, accumulated numbers cannot fairly reflect a complete season total.

Source: Western Regional Climate Center