Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >
| Year | First Occurrence of at Least | High for Summer (°F) |
Last Occurrence of at Least | Number of 100° Days |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 90°F | 95°F | 100°F | 100°F | 95°F | 90°F | |||||||
| 2024 | Feb 26 | May 8 | Jun 23 | 107 / Aug 19 | ||||||||
| 2023 | Feb 21 | May 5 | Jun 25 | 110 / Sep 841 | Sep 24 | Oct 4 | Oct 21 | 55 | ||||
| 2022 | Mar 27 | Apr 5 | Jun 11 | 109 / Jul 2040 | Aug 17 | Oct 12 | Oct 21 | 47 | ||||
| 2021 | May 3 | Jun 13 | Jul 25 | 102 / Jul 27 | Sep 20 | Sep 20 | Oct 10 | 8 | ||||
| 2020 | Apr 8 | Apr 8 | Jul 12 | 106 / Aug 29 | Aug 29 | Oct 11 | Oct 14 | 9 | ||||
| 2019 | Apr 10 | Jun 19 | Jul 30 | 102 / Aug 2639 | Sep 7 | Oct 6 | Oct 10 | 14 | ||||
| 2018 | May 7 | May 18 | Jun 22 | 109 / Jul 2238 | Aug 18 | Sep 1 | Oct 5 | 23 | ||||
| 2017 | Mar 20 | May 26 | Jun 23 | 102 / Jul 28 | Aug 19 | Oct 9 | Nov 5 | 10 | ||||
| 2016 | May 9 | Jun 15 | Jul 22 | 107 / Aug 12 | Sep 20 | Sep 21 | Oct 19 | 18 | ||||
| 2015 | Jun 3 | Jun 8 | Jul 26 | 106 / Aug 1037 | Sep 7 | Oct 15 | Oct 15 | 15 | ||||
| 2014 | Apr 27 | May 4 | Jul 13 | 104 / Aug 8 | Sep 10 | Oct 7 | Oct 10 | 15 | ||||
| 2013 | May 17 | Jun 10 | Jun 27 | 105 / Aug 3136 | Sep 6 | Sep 26 | Oct 12 | 28 | ||||
| 2012 | May 3 | May 24 | Jun 24 | 108 / Aug 9 | Sep 7 | Sep 25 | Sep 27 | 34 | ||||
| 2011 | Apr 18 | May 27 | Jun 13 | 110 / Aug 2 | Sep 29 | Sep 29 | Oct 7 | 71 | ||||
| 2010 | May 11 | May 28 | Jun 5 | 107 / Aug 23 | Aug 23 | Sep 17 | Sep 23 | 29 | ||||
| 2009 | Apr 22 | May 26 | Jun 23 | 104 / Jul 13 | Aug 25 | Sep 27 | Sep 27 | 21 | ||||
| 2008 | May 10 | May 19 | Jun 15 | 107 / Aug 3 | Aug 14 | Sep 7 | Oct 4 | 30 | ||||
| 2007 | May 15 | Jun 7 | Aug 11 | 104 / Aug 1435 | Aug 15 | Sep 27 | Oct 21 | 5 | ||||
| 2006 | Mar 1 | Apr 16 | Apr 17 | 107 / Jul 18 | Sep 1 | Sep 30 | Oct 5 | 43 | ||||
| 2005 | Apr 28 | May 20 | Jun 30 | 104 / Sep 28 | Sep 28 | Sep 28 | Oct 19 | 18 | ||||
| 2004 | May 20 | May 30 | Jul 16 | 100 / Jun 16 | Jul 16 | Sep 18 | Oct 20 | 1 | ||||
| 2003 | May 1 | May 30 | May 30 | 109 / Aug 6 | Aug 25 | Aug 29 | Oct 24 | 19 | ||||
| 2002 | Apr 29 | Jul 8 | Jul 25 | 100 / Jul 25 | Jul 25 | Sep 18 | Oct 6 | 1 | ||||
| 2001 | May 20 | Jun 13 | Jul 13 | 102 / Aug 5 | Aug 12 | Aug 25 | Oct 23 | 8 | ||||
| 2000 | Apr 7 | May 12 | Jul 12 | 111 / Sep 4 | Sep 11 | Sep 23 | Oct 5 | 46 | ||||
| 1999 | May 15 | Jun 1 | Jul 23 | 107 / Aug 10 | Aug 29 | Sep 19 | Oct 15 | 33 | ||||
| 1998 | May 6 | May 6 | May 6 | 110 / Jul 12 | Sep 8 | Sep 30 | Oct 5 | 56 | ||||
| 1997 | May 26 | Jul 1 | Jul 29 | 101 / Jul 29 | Aug 5 | Sep 30 | Oct 3 | 2 | ||||
| 1996 | Feb 21 | Feb 21 | Jun 18 | 106 / Jul 7 | Aug 5 | Aug 21 | Sep 23 | 13 | ||||
| 1995 | Mar 22 | Jun 8 | Jul 10 | 105 / Jul 28 | Sep 4 | Sep 16 | Oct 11 | 11 | ||||
| 1994 | May 31 | Jun 6 | Jun 25 | 103 / Aug 1934 | Aug 19 | Sep 29 | Oct 5 | 8 | ||||
| 1993 | May 15 | Jun 2 | Jul 24 | 104 / Aug 1 | Aug 22 | Sep 24 | Oct 1 | 24 | ||||
| 1992 | May 11 | Jun 15 | Aug 10 | 100 / Aug 10 | Aug 10 | Sep 21 | Oct 26 | 1 | ||||
| 1991 | Mar 5 | Mar 5 | Jul 15 | 101 / Jul 18 | Aug 19 | Oct 11 | Oct 13 | 4 | ||||
| 1990 | Apr 29 | Apr 29 | Jun 20 | 106 / Aug 31 | Sep 7 | Oct 6 | Oct 14 | 18 | ||||
| 1989 | Mar 14 | Apr 3 | Aug 23 | 101 / Sep 333 | Sep 4 | Oct 11 | Oct 16 | 6 | ||||
| 1988 | May 8 | Jun 8 | Jul 1 | 107 / Aug 8 | Aug 27 | Sep 23 | Sep 28 | 25 | ||||
| 1987 | Apr 17 | Apr 18 | Jul 31 | 103 / Aug 4 | Aug 23 | Sep 17 | Oct 5 | 19 | ||||
| 1986 | May 29 | Jun 23 | Jul 19 | 106 / Jul 3132 | Aug 18 | Aug 25 | Oct 3 | 13 | ||||
| 1985 | May 25 | May 30 | May 30 | 106 / Sep 1 | Sep 8 | Sep 9 | Sep 22 | 29 | ||||
| 1984 | Apr 20 | May 5 | Jun 21 | 106 / Aug 19 | Aug 29 | Sep 24 | Oct 6 | 19 | ||||
| 1983 | Jun 3 | Jun 28 | Jul 26 | 101 / Aug 15 | Aug 31 | Oct 4 | Oct 4 | 5 | ||||
| 1982 | Apr 16 | Jul 2 | Jul 21 | 103 / Aug 7 | Aug 27 | Sep 17 | Oct 6 | 10 | ||||
| 1981 | Apr 30 | Jun 8 | Jul 20 | 104 / Aug 15 | Aug 15 | Sep 27 | Oct 5 | 12 | ||||
| 1980 | Apr 7 | May 25 | Jun 7 | 113 / Jun 2731 | Sep 16 | Sep 22 | Sep 22 | 69 | ||||
| 1979 | Apr 15 | Jun 7 | Jun 29 | 103 / Jun 3030 | Oct 1 | Oct 12 | Oct 21 | 7 | ||||
| 1978 | Apr 4 | May 12 | Jun 24 | 107 / Jul 15 | Sep 4 | Sep 20 | Oct 20 | 36 | ||||
| 1977 | May 8 | May 27 | Jun 6 | 108 / Jul 24 | Sep 27 | Oct 1 | Oct 20 | 25 | ||||
| 1976 | Jun 10 | Jun 17 | Aug 1 | 102 / Aug 929 | Aug 14 | Sep 4 | Oct 11 | 5 | ||||
| 1975 | May 19 | Jun 6 | Jul 8 | 100 / Sep 1828 | Sep 18 | Oct 11 | Oct 12 | 3 | ||||
| 1974 | Mar 30 | Mar 31 | Jul 20 | 106 / Jul 22 | Aug 20 | Sep 1 | Sep 11 | 12 | ||||
| 1973 | May 10 | Jun 15 | 99 / Aug 2327 | Aug 24 | Sep 25 | 0 | ||||||
| 1972 | Apr 7 | Apr 12 | Jun 20 | 105 / Jun 25 | Sep 8 | Oct 17 | Oct 18 | 13 | ||||
| 1971 | Mar 13 | Jun 11 | Jul 6 | 103 / Jul 1926 | Jul 22 | Sep 14 | Sep 29 | 11 | ||||
| 1970 | Jun 12 | Jun 16 | Jul 3 | 104 / Aug 825 | Aug 18 | Sep 8 | Sep 22 | 18 | ||||
| 1969 | May 28 | Jun 18 | Jun 21 | 104 / Aug 2224 | Aug 22 | Aug 22 | Oct 11 | 27 | ||||
| 1968 | May 25 | Jun 11 | Aug 8 | 101 / Aug 10 | Sep 16 | Sep 16 | Oct 2 | 3 | ||||
| 1967 | Mar 11 | May 11 | Jul 28 | 104 / Jul 31 | Aug 30 | Aug 30 | Sep 12 | 12 | ||||
| 1966 | May 17 | May 17 | Aug 1 | 100 / Aug 923 | Aug 9 | Aug 21 | Oct 13 | 2 | ||||
| 1965 | May 27 | Jun 26 | Jul 7 | 103 / Aug 19 | Sep 15 | Sep 17 | Oct 10 | 15 | ||||
| 1964 | May 24 | Jun 7 | Jul 5 | 108 / Aug 11 | Sep 3 | Sep 11 | Sep 19 | 27 | ||||
| 1963 | Apr 8 | Apr 9 | Jun 14 | 105 / Aug 2722 | Sep 7 | Oct 9 | Oct 15 | 38 | ||||
| 1962 | May 6 | May 23 | Jul 10 | 104 / Aug 10 | Aug 24 | Sep 14 | Oct 15 | 17 | ||||
| 1961 | May 18 | Jun 13 | Aug 3 | 100 / Aug 421 | Aug 4 | Sep 10 | Sep 29 | 2 | ||||
| 1960 | Apr 6 | Apr 6 | Jun 5 | 104 / Jun 15 | Sep 19 | Sep 22 | Oct 6 | 12 | ||||
| 1959 | Apr 30 | May 31 | Jun 19 | 104 / Aug 30 | Aug 30 | Sep 28 | Sep 28 | 4 | ||||
| 1958 | May 23 | May 27 | Jul 20 | 103 / Aug 13 | Aug 28 | Sep 2 | Oct 9 | 13 | ||||
| 1957 | May 21 | Jun 11 | Jul 2 | 106 / Jul 30 | Aug 26 | Sep 21 | Sep 21 | 20 | ||||
| 1956 | Mar 27 | Mar 27 | Jun 23 | 107 / Aug 620 | Sep 19 | Oct 6 | Oct 9 | 48 | ||||
| 1955 | Mar 10 | Apr 21 | Jul 14 | 103 / Aug 2319 | Aug 24 | Sep 20 | Oct 12 | 8 | ||||
| 1954 | Mar 10 | May 28 | Jun 24 | 109 / Jul 25 | Sep 20 | Oct 13 | Oct 13 | 52 | ||||
| 1953 | May 8 | May 26 | Jun 12 | 106 / Aug 1118 | Sep 28 | Oct 1 | Oct 12 | 29 | ||||
| 1952 | Mar 31 | May 9 | Jun 17 | 108 / Aug 1617 | Sep 1 | Oct 4 | Oct 5 | 44 | ||||
| 1951 | Apr 14 | May 28 | Jul 18 | 107 / Sep 216 | Oct 3 | Oct 5 | Dec 30 | 40 | ||||
| 1950 | Apr 3 | Jun 12 | Aug 4 | 101 / Aug 11 | Aug 11 | Sep 15 | Oct 26 | 3 | ||||
| 1949 | Apr 7 | May 30 | Jul 7 | 104 / Aug 1515 | Aug 19 | Sep 18 | Sep 27 | 11 | ||||
| 1948 | Apr 7 | Apr 11 | Jun 5 | 106 / Aug 20 | Aug 23 | Sep 22 | Oct 15 | 21 | ||||
| 1947 | Apr 30 | May 4 | May 4 | 106 / Aug 10 | Sep 6 | Sep 18 | Oct 17 | 18 | ||||
| 1946 | Mar 30 | Mar 30 | Jul 11 | 105 / Aug 5 | Aug 18 | Sep 10 | Sep 22 | 22 | ||||
| 1945 | May 13 | Jun 2 | Jul 26 | 100 / Sep 1114 | Sep 11 | Sep 20 | Sep 26 | 5 | ||||
| 1944 | May 23 | Jun 18 | Jul 9 | 106 / Jul 9 | Aug 13 | Sep 22 | Oct 2 | 22 | ||||
| 1943 | Apr 25 | May 2 | Jun 28 | 110 / Aug 16 | Aug 30 | Sep 14 | Sep 16 | 34 | ||||
| 1942 | May 12 | Jun 2 | Jun 12 | 106 / Aug 9 | Aug 9 | Aug 22 | Sep 18 | 21 | ||||
| 1941 | May 8 | May 31 | Jul 8 | 104 / Aug 18 | Aug 31 | Sep 19 | Oct 13 | 16 | ||||
| 1940 | Mar 31 | Jul 10 | Aug 2 | 103 / Aug 3 | Sep 9 | Sep 9 | Oct 22 | 5 | ||||
| 1939 | May 10 | May 22 | Jul 6 | 107 / Sep 2 | Sep 5 | Oct 6 | Oct 23 | 21 | ||||
| 1938 | May 20 | Jul 1 | Jul 5 | 101 / Oct 1 | Oct 1 | Oct 2 | Oct 28 | 4 | ||||
| 1937 | Apr 15 | Jun 22 | Jun 27 | 104 / Aug 1013 | Sep 20 | Oct 6 | Oct 29 | 17 | ||||
| 1936 | Mar 14 | Jun 2 | Jun 10 | 112 / Aug 11 | Sep 6 | Sep 12 | Sep 23 | 19 | ||||
| 1935 | Apr 1 | Jul 3 | Jul 8 | 106 / Aug 10 | Aug 19 | Aug 28 | Sep 22 | 11 | ||||
| 1934 | Mar 22 | May 29 | Jun 14 | 105 / Jul 24 | Aug 23 | Oct 20 | Oct 22 | 34 | ||||
| 1933 | Mar 13 | May 8 | Jun 22 | 106 / Jul 11 | Jul 14 | Sep 22 | Oct 12 | 11 | ||||
| 1932 | Mar 20 | Jun 8 | Jul 16 | 102 / Aug 312 | Aug 7 | Aug 17 | Oct 18 | 12 | ||||
| 1931 | May 15 | Jun 15 | Jul 2 | 102 / Jul 8 | Sep 25 | Oct 7 | Oct 11 | 8 | ||||
| 1930 | Apr 7 | Apr 7 | Jun 25 | 106 / Aug 13 | Sep 12 | Sep 13 | Sep 25 | 24 | ||||
| 1929 | Mar 6 | Jun 10 | Jun 11 | 105 / Aug 3 | Aug 20 | Sep 4 | Oct 17 | 13 | ||||
| 1928 | Mar 12 | Apr 30 | May 27 | 103 / May 27 | May 30 | Oct 1 | Oct 9 | 2 | ||||
| 1927 | Apr 3 | May 26 | May 28 | 107 / May 28 | Aug 30 | Sep 18 | Oct 23 | 16 | ||||
| 1926 | May 28 | Jun 7 | Jul 30 | 103 / Aug 811 | Aug 8 | Sep 30 | Oct 18 | 8 | ||||
| 1925 | Apr 12 | Apr 18 | Apr 18 | 107 / Jul 1910 | Sep 8 | Oct 6 | Oct 23 | 33 | ||||
| 1924 | Apr 14 | May 20 | Jun 13 | 105 / Jun 15 | Sep 8 | Sep 8 | Oct 4 | 17 | ||||
| 1923 | Apr 7 | May 30 | Jun 27 | 105 / Jul 319 | Aug 17 | Sep 1 | Oct 1 | 21 | ||||
| 1922 | May 5 | May 20 | Jun 26 | 104 / Jul 218 | Aug 24 | Sep 8 | Oct 1 | 18 | ||||
| 1921 | May 12 | Jul 6 | Aug 4 | 102 / Aug 227 | Aug 25 | Sep 23 | Oct 19 | 11 | ||||
| 1920 | Apr 16 | May 3 | Aug 1 | 100 / Aug 1 | Aug 1 | Sep 24 | Sep 28 | 1 | ||||
| 1919 | Jun 6 | Jul 9 | Aug 7 | 100 / Aug 7 | Aug 7 | Sep 11 | Sep 11 | 1 | ||||
| 1918 | Feb 24 | May 7 | Jun 18 | 107 / Jun 26 | Sep 14 | Sep 15 | Oct 5 | 20 | ||||
| 1917 | Feb 25 | Jun 8 | Jun 30 | 107 / Jul 10 | Aug 22 | Oct 7 | Oct 11 | 15 | ||||
| 1916 | Mar 5 | Mar 21 | Mar 21 | 103 / Aug 21 | Aug 21 | Sep 9 | Oct 8 | 9 | ||||
| 1915 | May 23 | Jun 12 | Jun 28 | 100 / Aug 56 | Aug 5 | Sep 28 | Oct 3 | 2 | ||||
| 1914 | Apr 16 | Jun 19 | Jun 28 | 106 / Jul 31 | Aug 1 | Sep 11 | Oct 17 | 12 | ||||
| 1913 | Apr 16 | May 17 | Jun 1 | 107 / Aug 295 | Sep 6 | Sep 6 | Oct 5 | 19 | ||||
| 1912 | Mar 19 | May 27 | Jun 13 | 109 / Jul 29 | Aug 3 | Sep 24 | Oct 9 | 10 | ||||
| 1911 | Jan 31 | Mar 9 | Mar 9 | 106 / Aug 14 | Aug 22 | Oct 1 | Oct 6 | 27 | ||||
| 1910 | Mar 22 | Jun 1 | Jun 2 | 105 / Jul 17 | Aug 24 | Oct 14 | Oct 14 | 14 | ||||
| 1909 | Mar 5 | Apr 29 | Jul 8 | 112 / Aug 18 | Sep 10 | Oct 14 | Oct 14 | 17 | ||||
| 1908 | Mar 17 | Jun 13 | Aug 7 | 100 / Aug 7 | Aug 7 | Sep 8 | Sep 9 | 1 | ||||
| 1907 | Mar 18 | Mar 19 | Jul 1 | 102 / Aug 8 | Sep 7 | Oct 1 | Oct 3 | 12 | ||||
| 1906 | May 4 | Jun 10 | 99 / Aug 304 | Jul 27 | Sep 23 | 0 | ||||||
| 1905 | Jun 3 | Jun 8 | Aug 19 | 102 / Aug 19 | Aug 19 | Sep 16 | Oct 14 | 1 | ||||
| 1904 | Feb 25 | Feb 25 | Jul 12 | 103 / Jul 12 | Jul 12 | Oct 5 | Oct 10 | 1 | ||||
| 1903 | Apr 1 | Jul 12 | Aug 16 | 100 / Aug 16 | Aug 16 | Aug 29 | Sep 26 | 1 | ||||
| 1902 | Mar 3 | Jun 8 | Jun 18 | 103 / Aug 273 | Aug 29 | Sep 11 | Sep 29 | 8 | ||||
| 1901 | Mar 2 | May 10 | Jun 16 | 108 / Aug 28 | Aug 29 | Sep 14 | Oct 2 | 18 | ||||
| 1900 | May 24 | Jun 6 | Jun 22 | 102 / Sep 162 | Sep 16 | Sep 16 | Oct 6 | 4 | ||||
| 1899 | Mar 25 | Mar 25 | Jul 23 | 104 / Aug 241 | Aug 28 | Sep 13 | Oct 20 | 15 | ||||
| Also on: 1Aug 20; 2Jun 26; 3Jul 25; 4Jul 22; 5Aug 7; 6Jun 28; 7Aug 5, Aug 21; 8Jul 20; 9Jul 26, Jul 27; 10Jul 14, Jul 18; 11Aug 3; 12Jul 16; 13Aug 4, Aug 5, Aug 9; 14Jul 26, Sep 1; 15Jul 12; 16Aug 4, Aug 6, Aug 15, Aug 16, Aug 17, Aug 18, Sep 1; 17Aug 6; 18Aug 7, Aug 8; 19Aug 8; 20Jul 8; 21Aug 3; 22Jul 22; 23Aug 1; 24Jul 15; 25Aug 7; 26Jul 16; 27Jul 12; 28Jul 8, Jul 20; 29Aug 8; 30Jun 29; 31Jun 26; 32Jul 29, Jul 30; 33Aug 23, Sep 1; 34Jul 23; 35Aug 12, Aug 13; 36Aug 7; 37Aug 9; 38Jul 21; 39Aug 13; 40Jul 18, Jul 19; 41Aug 25, Aug 26 | ||||||||||||
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