| MAY | Today's | Today's | Average | Average | Record | Record | Avg. Year-to-date | Year | Departure | Today's | Record | YTD | |||
| Date | High | Low | High | Low | High | Year | Low | Year | Precipitation | to date | From Avg. | Precip. | Precip. | Year | 14.40 |
| 1 | 65 | 45 | 71 | 47 | 92 | 1895 | 26 | 1903 | 11.38 | 14.75 | 3.37 | 0.35 | 1.75 | 1946 | |
| 2 | 59 | 47 | 71 | 47 | 91 | 1901 | 30 | 1966 | 11.52 | 14.79 | 3.27 | 0.04 | 3.31 | 1983 | |
| 3 | 58 | 41 | 72 | 47 | 94 | 1895 | 30 | 1967 | 11.65 | 14.79 | 3.14 | 2.47 | 1997 | ||
| 4 | 62 | 39 | 72 | 48 | 92 | 1952 | 31 | 1907 | 11.79 | 14.79 | 3.00 | 2.25 | 1908 | ||
| 5 | 65 | 41 | 72 | 48 | 94 | 1895 | 32 | 1917 | 11.93 | 15.22 | 3.29 | 0.43 | 2.07 | 1977 | |
| 6 | 71 | 46 | 73 | 48 | 91 | 1949 | 28 | 1944 | 12.07 | 15.22 | 3.15 | 1.82 | 1977 | ||
| 7 | 78 | 56 | 73 | 49 | 90 | 1895 | 27 | 1989 | 12.21 | 15.24 | 3.03 | 0.02 | 1.92 | 1943 | |
| 8 | 76 | 54 | 74 | 49 | 94 | 1895 | 33 | 1923 | 12.34 | 15.24 | 2.90 | 2.15 | 1961 | ||
| 9 | 81 | 60 | 74 | 49 | 97 | 1895 | 29 | 1980 | 12.48 | 15.24 | 2.76 | 2.95 | 1996 | ||
| 10 | 89 | 69 | 74 | 50 | 94 | 1895 | 27 | 1966 | 12.62 | 15.24 | 2.62 | 1.85 | 2003 | ||
| 11 | 90 | 68 | 75 | 50 | 89 | 1922 | 31 | 1907 | 12.76 | 15.24 | 2.48 | 1.76 | 1926 | ||
| 12 | 86 | 69 | 75 | 50 | 90 | 1902 | 30 | 1981 | 12.90 | 15.24 | 2.34 | 3.78 | 2002 | ||
| 13 | 83 | 64 | 75 | 51 | 91 | 1894 | 32 | 1960 | 13.03 | 15.31 | 2.28 | 0.07 | 1.90 | 1920 | |
| 14 | 59 | 51 | 76 | 51 | 93 | 1987 | 25 | 1895 | 13.17 | 17.36 | 4.19 | 2.05 | 1.81 | 2004 | |
| 15 | 53 | 43 | 76 | 51 | 94 | 1894 | 35 | 1973 | 13.31 | 17.94 | 4.63 | 0.58 | 1.54 | 1923 | |
| 16 | 62 | 41 | 76 | 52 | 92 | 1894 | 33 | 1895 | 13.45 | 17.94 | 4.49 | 2.73 | 1990 | ||
| 17 | 64 | 38 | 76 | 52 | 92 | 1987 | 35 | 1895 | 13.59 | 17.94 | 4.35 | 3.33 | 1943 | ||
| 18 | 68 | 49 | 77 | 52 | 93 | 1962 | 34 | 2002 | 13.73 | 17.94 | 4.21 | 2.10 | 1943 | ||
| 19 | 76 | 45 | 77 | 53 | 93 | 1987 | 33 | 1894 | 13.86 | 17.94 | 4.08 | 4.22 | 1974 | ||
| 20 | 83 | 61 | 77 | 53 | 95 | 1987 | 34 | 1894 | 14.00 | 17.94 | 3.94 | 1.43 | 1974 | ||
| 21 | 84 | 68 | 78 | 53 | 96 | 1925 | 31 | 1895 | 14.14 | 17.94 | 3.80 | 2.92 | 1911 | ||
| 22 | 87 | 67 | 78 | 54 | 97 | 1925 | 33 | 1895 | 14.28 | 18.24 | 3.96 | 0.30 | 1.64 | 1933 | |
| 23 | 82 | 64 | 78 | 54 | 96 | 1921 | 35 | 1961 | 14.42 | 18.24 | 3.82 | 3.21 | 1968 | ||
| 24 | 87 | 61 | 79 | 54 | 96 | 1921 | 38 | 1925 | 14.55 | 18.24 | 3.69 | 1.92 | 1968 | ||
| 25 | 82 | 62 | 79 | 55 | 95 | 1926 | 29 | 1925 | 14.69 | 20.77 | 6.08 | 2.53 | 1.84 | 1909 | |
| 26 | 64 | 52 | 79 | 55 | 94 | 1911 | 31 | 1979 | 14.83 | 22.37 | 7.54 | 1.60 | 2.13 | 1915 | |
| 27 | 65 | 49 | 80 | 55 | 96 | 1911 | 34 | 1961 | 14.97 | 22.37 | 7.40 | 2.32 | 1996 | ||
| 28 | 69 | 56 | 80 | 55 | 94 | 1911 | 36 | 1907 | 15.11 | 23.37 | 8.26 | 1.00 | 2.29 | 1955 | |
| 29 | 88 | 64 | 80 | 56 | 96 | 1934 | 36 | 1897 | 15.24 | 23.37 | 8.13 | 1.25 | 1924 | ||
| 30 | 90 | 72 | 81 | 56 | 98 | 1934 | 36 | 1924 | 15.38 | 23.37 | 7.99 | 1.39 | 1967 | ||
| 31 | 88 | 73 | 81 | 56 | 101 | 1934 | 35 | 1897 | 15.52 | 23.37 | 7.85 | 1.76 | 1899 |