Every May in Mount Shasta, CA from 1948 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 |
|---|
| 2026 | 58.7 | 4 | 73.5 | 9 | 43.9 | 5 | 2.36 | 23 | 0 |
|---|
| 2025 | 58.5 | 5 | 74.1 | 4 | 42.9 | 11 | 0.50 | 57 | 0 |
|---|
| 2024 | 57 | 17 | 72.7 | 14 | 41.2 | 27 | 1.39 | 39 | 0 |
|---|
| 2023 | 57.3 | 16 | 72.2 | 18 | 42.5 | 14 | 1.78 | 32 | 0 |
|---|
| 2022 | 53.6 | 47 | 67.8 | 44 | 39.3 | 53 | 0.54 | 56 | 0 |
|---|
| 2021 | 58.2 | 9 | 73.8 | 5 | 42.6 | 12 | 0.65 | 52 | 0 |
|---|
| 2020 | 55.6 | 27 | 69.9 | 27 | 41.2 | 27 | 3.39 | 9 | 0 |
|---|
| 2019 | 54.4 | 39 | 68.3 | 42 | 40.5 | 35 | 5.66 | 3 | 0 |
|---|
| 2018 | 58.5 | 5 | 73.1 | 12 | 44 | 2 | 2.07 | 26 | 0 |
|---|
| 2017 | 57.6 | 13 | 73.5 | 9 | 41.7 | 22 | 0.46 | 60 | 0 |
|---|
| 2016 | 57.9 | 12 | 71.9 | 20 | 43.9 | 5 | 1.28 | 43 | 0 |
|---|
| 2015 | 57.5 | 14 | 71.8 | 22 | 43.2 | 9 | 1.76 | 33 | 0 |
|---|
| 2014 | 58.1 | 11 | 73.6 | 7 | 42.6 | 12 | 0.44 | 62 | 0 |
|---|
| 2013 | 57 | 17 | 72 | 19 | 42.1 | 19 | 0.90 | 49 | 0 |
|---|
| 2012 | 56.1 | 23 | 72.3 | 17 | 39.9 | 49 | 0.48 | 59 | 0 |
|---|
| 2011 | 49.7 | 71 | 62.1 | 71 | 37.3 | 68 | 3.08 | 12 | 0 |
|---|
| 2010 | 48.9 | 73 | 61.2 | 74 | 36.7 | 73 | 2.49 | 22 | 0 |
|---|
| 2009 | 58.4 | 8 | 73.8 | 5 | 43 | 10 | 2.57 | 19 | 0 |
|---|
| 2008 | 56 | 24 | 69.7 | 29 | 42.2 | 17 | 1.06 | 45 | 0 |
|---|
| 2007 | 56.8 | 20 | 72.8 | 13 | 40.8 | 30 | 0.49 | 58 | 0 |
|---|
| 2006 | 56.7 | 21 | 71.3 | 23 | 42.2 | 17 | 2.68 | 18 | 0 |
|---|
| 2005 | 53.6 | 47 | 65.6 | 59 | 41.6 | 25 | 5.20 | 6 | 0 |
|---|
| 2004 | 54.7 | 35 | 68.6 | 38 | 40.8 | 30 | 1.45 | 38 | 0 |
|---|
| 2003 | 54.4 | 39 | 68.6 | 38 | 40.2 | 43 | 0.38 | 63 | 0 |
|---|
| 2002 | 54.1 | 42 | 67.8 | 44 | 40.4 | 39 | 2.34 | 24 | 0 |
|---|
| 2001 | 60.3 | 2 | 76.6 | 2 | 44 | 2 | 0.13 | 71 | 0 |
|---|
| 2000 | 53.5 | 49 | 65.6 | 59 | 41.3 | 26 | 1.29 | 42 | 0 |
|---|
| 1999 | 53 | 54 | 67 | 49 | 39 | 56 | 0.21 | 69 | 0 |
|---|
| 1998 | 47.7 | 74 | 56.7 | 77 | 38.7 | 58 | 7.32 | 2 | 0 |
|---|
| 1997 | 58.9 | 3 | 73.6 | 7 | 44.2 | 1 | | | 0 |
|---|
| 1996 | | | | | 38.4 | 61 | 3.68 | 8 | 4 |
|---|
| 1995 | 53.5 | 49 | 66.8 | 52 | 40.2 | 43 | 1.94 | 29 | 0 |
|---|
| 1994 | 54.4 | 39 | 68.1 | 43 | 41.7 | 22 | 2.53 | 21 | 3 |
|---|
| 1993 | 54.1 | 42 | 66.6 | 53 | 42 | 20 | 5.24 | 5 | 2 |
|---|
| 1992 | 61.2 | 1 | 78.5 | 1 | 44 | 2 | 0.01 | 75 | 0 |
|---|
| 1991 | 50.7 | 63 | 64.4 | 64 | 37 | 72 | 2.71 | 15 | 2 |
|---|
| 1990 | 50.6 | 65 | 63.4 | 67 | 37.9 | 65 | 9.30 | 1 | 0 |
|---|
| 1989 | 52.9 | 55 | 67.4 | 47 | 38.5 | 60 | 1.34 | 41 | 0 |
|---|
| 1988 | 51.1 | 62 | 66.3 | 55 | 35.9 | 75 | 2.13 | 25 | 0 |
|---|
| 1986 | | | 69.8 | 28 | | | | | 31 |
|---|
| 1985 | 52.9 | 55 | 68.4 | 40 | 37.4 | 66 | 0.37 | 65 | 0 |
|---|
| 1984 | 54.8 | 32 | 69.6 | 31 | 39.9 | 49 | 0.38 | 63 | 0 |
|---|
| 1983 | 54.8 | 32 | 69 | 33 | 40.5 | 35 | 0.72 | 50 | 0 |
|---|
| 1982 | 54.5 | 37 | 69.7 | 29 | 39.3 | 53 | 0.60 | 55 | 0 |
|---|
| 1981 | 53.3 | 51 | 66.2 | 56 | 40.4 | 39 | 1.60 | 36 | 0 |
|---|
| 1980 | 52.4 | 58 | 66.1 | 57 | 38.7 | 58 | 1.04 | 46 | 0 |
|---|
| 1979 | 54.1 | 42 | 68.9 | 35 | 39.3 | 53 | 1.71 | 34 | 0 |
|---|
| 1978 | 50.7 | 63 | 65.3 | 61 | 36.1 | 74 | 0.69 | 51 | 0 |
|---|
| 1977 | 46.7 | 76 | 58.1 | 76 | 35.2 | 76 | 1.71 | 34 | 0 |
|---|
| 1976 | 56 | 24 | 71.3 | 23 | 40.7 | 32 | 0.24 | 68 | 0 |
|---|
| 1975 | 54.8 | 32 | 68.8 | 36 | 40.9 | 29 | 0.09 | 73 | 0 |
|---|
| 1974 | 54.5 | 37 | 69 | 33 | 40 | 47 | 0.12 | 72 | 0 |
|---|
| 1973 | 58.5 | 5 | 74.7 | 3 | 42.3 | 16 | 0.34 | 66 | 0 |
|---|
| 1972 | 55.4 | 29 | 70.2 | 26 | 40.6 | 34 | 1.52 | 37 | 0 |
|---|
| 1971 | 51.4 | 61 | 62.8 | 68 | 40 | 47 | 4.33 | 7 | 0 |
|---|
| 1970 | 55.6 | 27 | 70.9 | 25 | 40.2 | 43 | 0.14 | 70 | 0 |
|---|
| 1969 | 58.2 | 9 | 72.5 | 15 | 43.8 | 8 | 1.03 | 47 | 0 |
|---|
| 1968 | 52.6 | 57 | 66.9 | 51 | 38.2 | 63 | 1.12 | 44 | 0 |
|---|
| 1967 | 54 | 45 | 68.4 | 40 | 39.7 | 52 | 0.96 | 48 | 0 |
|---|
| 1966 | 57.5 | 14 | 73.3 | 11 | 41.7 | 22 | 0.25 | 67 | 0 |
|---|
| 1965 | 51.7 | 60 | 65.3 | 61 | 38.1 | 64 | 0.65 | 52 | 0 |
|---|
| 1964 | 50.4 | 68 | 63.8 | 65 | 37.1 | 69 | 2.02 | 27 | 0 |
|---|
| 1963 | 55.7 | 26 | 67.5 | 46 | 43.9 | 5 | 1.94 | 29 | 0 |
|---|
| 1962 | 50.5 | 66 | 62.2 | 70 | 38.9 | 57 | 2.55 | 20 | 0 |
|---|
| 1961 | 50 | 69 | 61.7 | 72 | 38.4 | 61 | 2.86 | 13 | 0 |
|---|
| 1960 | 49.8 | 70 | 62.4 | 69 | 37.1 | 69 | 3.18 | 10 | 0 |
|---|
| 1959 | 50.5 | 66 | 63.6 | 66 | 37.4 | 66 | 0.63 | 54 | 0 |
|---|
| 1958 | 57 | 17 | 71.9 | 20 | 42 | 20 | 1.39 | 39 | 0 |
|---|
| 1957 | 52.4 | 58 | 64.5 | 63 | 40.3 | 42 | 5.28 | 4 | 0 |
|---|
| 1956 | 53.7 | 46 | 67 | 49 | 40.4 | 39 | 2.69 | 17 | 0 |
|---|
| 1955 | 53.2 | 52 | 66.5 | 54 | 39.9 | 49 | 0.08 | 74 | 0 |
|---|
| 1954 | 56.5 | 22 | 72.4 | 16 | 40.5 | 35 | 0.01 | 75 | 0 |
|---|
| 1953 | 47 | 75 | 58.8 | 75 | 35.1 | 77 | 3.16 | 11 | 0 |
|---|
| 1952 | 54.6 | 36 | 68.7 | 37 | 40.5 | 35 | 1.91 | 31 | 0 |
|---|
| 1951 | 53.2 | 52 | 66.1 | 57 | 40.2 | 43 | 2.71 | 15 | 0 |
|---|
| 1950 | 55.2 | 30 | 69.6 | 31 | 40.7 | 32 | 0.46 | 60 | 0 |
|---|
| 1949 | 54.9 | 31 | 67.4 | 47 | 42.4 | 15 | 2.81 | 14 | 0 |
|---|
| 1948 | 49.3 | 72 | 61.5 | 73 | 37.1 | 69 | 1.95 | 28 | 0 |
|---|