Every April in Portland, OR from 1941 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.
| Year | Mean, °F | Rank | High, °F | Rank | Low, °F | Rank | Precipitation, in | Rank | Days missing |
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| 2026 | 54.7 | 7 | 65 | 9 | 44.4 | 16 | 2.75 | 32 | 0 |
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| 2025 | 56.4 | 2 | 67.2 | 4 | 45.7 | 4 | 1.01 | 78 | 0 |
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| 2024 | 54.4 | 11 | 63.2 | 23 | 45.6 | 5 | 1.79 | 65 | 0 |
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| 2023 | 51.7 | 47 | 59.5 | 58 | 43.9 | 21 | 5.08 | 4 | 0 |
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| 2022 | 49.7 | 70 | 57.9 | 72 | 41.5 | 56 | 5.73 | 1 | 0 |
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| 2021 | 55.2 | 6 | 67.3 | 2 | 43 | 36 | 0.39 | 86 | 0 |
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| 2020 | 54.5 | 8 | 64.9 | 10 | 44.1 | 20 | 0.79 | 82 | 0 |
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| 2019 | 54.4 | 11 | 62.6 | 28 | 46.1 | 3 | 2.98 | 27 | 0 |
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| 2018 | 53.8 | 19 | 62.1 | 32 | 45.4 | 6 | 3.34 | 20 | 0 |
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| 2017 | 50.7 | 58 | 58.7 | 67 | 42.7 | 40 | 4.51 | 8 | 0 |
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| 2016 | 57.8 | 1 | 68.5 | 1 | 47 | 1 | 1.96 | 54 | 0 |
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| 2015 | 52.8 | 28 | 62.9 | 26 | 42.6 | 42 | 1.75 | 68 | 0 |
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| 2014 | 53.7 | 21 | 62.6 | 28 | 44.7 | 11 | 3.03 | 26 | 0 |
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| 2013 | 52.4 | 36 | 61.3 | 43 | 43.4 | 28 | 2.19 | 49 | 0 |
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| 2012 | 53 | 25 | 61.5 | 39 | 44.5 | 14 | 3.25 | 23 | 0 |
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| 2011 | 47.9 | 82 | 56 | 83 | 39.8 | 75 | 5.04 | 5 | 0 |
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| 2010 | 51 | 52 | 59.1 | 64 | 42.8 | 38 | 2.92 | 30 | 0 |
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| 2009 | 52.3 | 39 | 62.3 | 31 | 42.2 | 46 | 2.31 | 43 | 0 |
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| 2008 | 48.5 | 78 | 56.7 | 79 | 40.3 | 72 | 2.08 | 51 | 0 |
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| 2007 | 51.7 | 47 | 60.4 | 49 | 43 | 36 | 2.01 | 53 | 0 |
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| 2006 | 53.1 | 24 | 62.9 | 26 | 43.3 | 31 | 2.46 | 38 | 0 |
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| 2005 | 52.3 | 39 | 60.3 | 50 | 44.2 | 19 | 3.49 | 17 | 0 |
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| 2004 | 56.3 | 3 | 67.3 | 2 | 45.3 | 7 | 1.01 | 78 | 0 |
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| 2003 | 50.8 | 55 | 58.2 | 71 | 43.4 | 28 | 4.37 | 9 | 0 |
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| 2002 | 52.3 | 39 | 60.9 | 45 | 43.6 | 24 | 2.34 | 41 | 0 |
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| 2001 | 49.6 | 71 | 57.9 | 72 | 41.3 | 59 | 2.85 | 31 | 0 |
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| 2000 | 54 | 16 | 64.1 | 17 | 43.9 | 21 | 1.82 | 63 | 0 |
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| 1999 | 50.7 | 58 | 60.3 | 50 | 41 | 65 | 1.56 | 70 | 0 |
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| 1998 | 52.8 | 28 | 62.1 | 32 | 43.4 | 28 | 1.04 | 76 | 0 |
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| 1997 | 51 | 52 | 59.4 | 61 | 42.6 | 42 | 3.73 | 14 | 0 |
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| 1996 | 53.5 | 22 | 61.7 | 38 | 45.2 | 8 | 5.12 | 3 | 0 |
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| 1995 | 51.3 | 50 | 60.6 | 46 | 41.9 | 51 | 3.49 | 17 | 0 |
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| 1994 | 54.2 | 14 | 63.7 | 19 | 44.7 | 11 | 1.91 | 56 | 0 |
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| 1993 | 52.6 | 33 | 59.9 | 55 | 45.2 | 8 | 5.26 | 2 | 0 |
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| 1992 | 55.4 | 5 | 64.3 | 16 | 46.5 | 2 | 3.82 | 12 | 0 |
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| 1991 | 50.8 | 55 | 59.5 | 58 | 42 | 50 | 4.05 | 10 | 0 |
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| 1990 | 54.5 | 8 | 64.4 | 14 | 44.6 | 13 | 2.31 | 43 | 0 |
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| 1989 | 56 | 4 | 66.8 | 5 | 45.2 | 8 | 2.08 | 51 | 0 |
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| 1988 | 52.2 | 43 | 60.6 | 46 | 43.7 | 23 | 4.57 | 7 | 0 |
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| 1987 | 54.2 | 14 | 64.7 | 11 | 43.6 | 24 | 1.94 | 55 | 0 |
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| 1986 | 50.2 | 65 | 59.5 | 58 | 40.9 | 66 | 1.91 | 56 | 0 |
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| 1985 | 53.9 | 17 | 63.3 | 22 | 44.4 | 16 | 1.07 | 75 | 0 |
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| 1984 | 50.4 | 62 | 57.9 | 72 | 42.8 | 38 | 3.20 | 24 | 0 |
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| 1983 | 52.7 | 31 | 63 | 24 | 42.4 | 45 | 1.87 | 61 | 0 |
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| 1982 | 49 | 74 | 58.6 | 69 | 39.3 | 77 | 3.56 | 16 | 0 |
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| 1981 | 52.5 | 35 | 61.4 | 41 | 43.5 | 26 | 1.79 | 65 | 0 |
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| 1980 | 53.8 | 19 | 64.5 | 13 | 43.1 | 34 | 2.58 | 35 | 0 |
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| 1979 | 53 | 25 | 61.8 | 37 | 44.3 | 18 | 2.47 | 37 | 0 |
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| 1978 | 50.4 | 62 | 58.8 | 65 | 42.1 | 48 | 3.96 | 11 | 0 |
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| 1977 | 52.9 | 27 | 65.3 | 8 | 40.4 | 69 | 1.04 | 76 | 0 |
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| 1976 | 50.2 | 65 | 60.1 | 52 | 40.4 | 69 | 2.34 | 41 | 0 |
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| 1975 | 47.3 | 83 | 56.6 | 80 | 38 | 83 | 1.88 | 60 | 0 |
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| 1974 | 51.3 | 50 | 59.3 | 62 | 43.3 | 31 | 1.76 | 67 | 0 |
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| 1973 | 52.2 | 43 | 63.4 | 21 | 41.1 | 63 | 1.33 | 73 | 0 |
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| 1972 | 48 | 80 | 57.4 | 77 | 38.6 | 81 | 2.98 | 27 | 0 |
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| 1971 | 49.6 | 71 | 60.1 | 52 | 39.1 | 80 | 2.72 | 34 | 0 |
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| 1970 | 48.3 | 79 | 57.4 | 77 | 39.3 | 77 | 2.94 | 29 | 0 |
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| 1969 | 50 | 67 | 59.9 | 55 | 40.2 | 73 | 2.28 | 45 | 0 |
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| 1968 | 48 | 80 | 57.8 | 76 | 38.2 | 82 | 1.91 | 56 | 0 |
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| 1967 | 46.9 | 84 | 56.2 | 82 | 37.6 | 85 | 2.17 | 50 | 0 |
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| 1966 | 50.6 | 60 | 61 | 44 | 40.2 | 73 | 0.85 | 81 | 0 |
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| 1965 | 51.8 | 45 | 61.9 | 36 | 41.6 | 55 | 2.20 | 48 | 0 |
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| 1964 | 46.7 | 85 | 56 | 83 | 37.4 | 86 | 1.56 | 70 | 0 |
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| 1963 | 48.6 | 76 | 55.9 | 85 | 41.2 | 61 | 3.78 | 13 | 0 |
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| 1962 | 52.6 | 33 | 62.4 | 30 | 42.7 | 40 | 3.15 | 25 | 0 |
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| 1961 | 50 | 67 | 58.6 | 69 | 41.5 | 56 | 3.59 | 15 | 0 |
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| 1960 | 50.6 | 60 | 60.1 | 52 | 41.1 | 63 | 3.33 | 21 | 0 |
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| 1959 | 52.3 | 39 | 62 | 35 | 42.5 | 44 | 0.92 | 80 | 0 |
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| 1958 | 50.8 | 55 | 60.5 | 48 | 41.2 | 61 | 3.33 | 21 | 0 |
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| 1957 | 51.8 | 45 | 61.4 | 41 | 42.2 | 46 | 1.84 | 62 | 0 |
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| 1956 | 52.7 | 31 | 63.6 | 20 | 41.7 | 54 | 0.53 | 85 | 0 |
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| 1955 | 46.5 | 86 | 55 | 86 | 37.9 | 84 | 4.72 | 6 | 0 |
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| 1954 | 49.5 | 73 | 59.3 | 62 | 39.8 | 75 | 2.54 | 36 | 0 |
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| 1953 | 49.9 | 69 | 58.8 | 65 | 40.9 | 66 | 1.89 | 59 | 0 |
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| 1952 | 52.4 | 36 | 64.4 | 14 | 40.4 | 69 | 1.45 | 72 | 0 |
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| 1951 | 53.5 | 22 | 66 | 6 | 40.9 | 66 | 1.14 | 74 | 0 |
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| 1950 | 48.6 | 76 | 57.9 | 72 | 39.2 | 79 | 2.74 | 33 | 0 |
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| 1949 | 52.4 | 36 | 63 | 24 | 41.8 | 52 | 0.72 | 84 | 0 |
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| 1948 | 48.9 | 75 | 56.5 | 81 | 41.3 | 59 | 3.41 | 19 | 0 |
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| 1947 | 53.9 | 17 | 64.6 | 12 | 43.2 | 33 | 1.81 | 64 | 0 |
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| 1946 | 51.4 | 49 | 61.5 | 39 | 41.4 | 58 | 0.78 | 83 | 0 |
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| 1945 | 50.4 | 62 | 58.7 | 67 | 42.1 | 48 | 2.42 | 39 | 0 |
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| 1944 | 50.9 | 54 | 59.9 | 55 | 41.8 | 52 | 2.28 | 45 | 0 |
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| 1943 | 54.3 | 13 | 64.1 | 17 | 44.5 | 14 | 2.21 | 47 | 0 |
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| 1942 | 52.8 | 28 | 62.1 | 32 | 43.5 | 26 | 2.38 | 40 | 0 |
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| 1941 | 54.5 | 8 | 65.8 | 7 | 43.1 | 34 | 1.66 | 69 | 0 |
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