| SEPT | 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 | 11.84 |
| 1 | 84 | 72 | 84 | 60 | 102 | 1953 | 41 | 1987 | 26.76 | 13.69 | -13.07 | 1.85 | 2.72 | 2003 | |
| 2 | 80 | 72 | 83 | 59 | 102 | 1913 | 45 | 1901 | 26.87 | 13.75 | -13.12 | 0.06 | 1.34 | 1934 | |
| 3 | 89 | 72 | 83 | 59 | 102 | 1913 | 43 | 1952 | 26.99 | 13.76 | -13.23 | 0.01 | 1.81 | 1966 | |
| 4 | 91 | 70 | 83 | 59 | 103 | 1913 | 41 | 1928 | 27.10 | 13.76 | -13.34 | 4.20 | 1926 | ||
| 5 | 84 | 66 | 83 | 58 | 104 | 1954 | 45 | 1902 | 27.22 | 14.04 | -13.18 | 0.28 | 1.60 | 1921 | |
| 6 | 89 | 68 | 83 | 58 | 103 | 1925 | 37 | 1988 | 27.33 | 14.04 | -13.29 | 3.22 | 2971 | ||
| 7 | 87 | 66 | 82 | 58 | 102 | 1899 | 40 | 1988 | 27.45 | 14.94 | -12.51 | 0.90 | 0.94 | 1911 | |
| 8 | 74 | 55 | 82 | 57 | 100 | 1922 | 34 | 1986 | 27.56 | 14.94 | -12.62 | 2.42 | 1927 | ||
| 9 | 75 | 56 | 82 | 57 | 101 | 1933 | 39 | 1986 | 27.68 | 14.94 | -12.74 | 3.60 | 1926 | ||
| 10 | 76 | 49 | 82 | 57 | 99 | 1919 | 40 | 1924 | 27.79 | 14.94 | -12.85 | 1.70 | 1905 | ||
| 11 | 83 | 52 | 81 | 56 | 99 | 1897 | 35 | 1917 | 27.91 | 14.94 | -12.97 | 1.04 | 1944 | ||
| 12 | 85 | 60 | 81 | 56 | 99 | 1897 | 38 | 1955 | 28.02 | 14.94 | -13.08 | 1.70 | 1949 | ||
| 13 | 85 | 61 | 81 | 56 | 100 | 1939 | 35 | 1902 | 28.13 | 14.94 | -13.19 | 2.38 | 1911 | ||
| 14 | 74 | 56 | 81 | 56 | 101 | 1939 | 34 | 1923 | 28.25 | 15.04 | -13.21 | 0.10 | 5.84 | 2008 | |
| 15 | 76 | 49 | 80 | 55 | 101 | 1939 | 38 | 1979 | 28.36 | 15.04 | -13.32 | 2.05 | 1931 | ||
| 16 | 77 | 47 | 80 | 55 | 99 | 1939 | 32 | 1916 | 28.48 | 15.04 | -13.44 | 2.20 | 1965 | ||
| 17 | 79 | 56 | 80 | 55 | 97 | 1927 | 35 | 1937 | 28.59 | 15.37 | -13.22 | 0.33 | 4.11 | 1969 | |
| 18 | 66 | 48 | 79 | 54 | 96 | 1983 | 32 | 1901 | 28.71 | 15.37 | -13.34 | 4.66 | 1904 | ||
| 19 | 72 | 42 | 79 | 54 | 97 | 1955 | 32 | 1901 | 28.82 | 15.37 | -13.45 | 2.46 | 1966 | ||
| 20 | 76 | 57 | 79 | 53 | 96 | 1940 | 31 | 1991 | 28.94 | 15.37 | -13.57 | 2.65 | 1986 | ||
| 21 | 77 | 49 | 79 | 53 | 95 | 1955 | 31 | 1897 | 29.05 | 15.60 | -13.45 | 0.23 | 2.41 | 1947 | |
| 22 | 62 | 49 | 78 | 53 | 94 | 1930 | 30 | 1983 | 29.17 | 15.61 | -13.56 | 0.01 | 1.79 | 1965 | |
| 23 | 64 | 39 | 78 | 52 | 92 | 1905 | 29 | 1983 | 29.28 | 15.61 | -13.67 | 1.78 | 1959 | ||
| 24 | 71 | 38 | 77 | 52 | 93 | 1933 | 31 | 1928 | 29.40 | 15.61 | -13.79 | 1.43 | 1961 | ||
| 25 | 74 | 55 | 77 | 52 | 91 | 1897 | 33 | 1989 | 29.51 | 16.13 | -13.38 | 0.52 | 2.18 | 1926 | |
| 26 | 75 | 64 | 77 | 51 | 96 | 1897 | 27 | 1928 | 29.63 | 16.25 | -13.38 | 0.12 | 3.00 | 1904 | |
| 27 | 74 | 57 | 76 | 51 | 93 | 1954 | 31 | 1899 | 29.74 | 16.25 | -13.49 | 1.82 | 1936 | ||
| 28 | 73 | 54 | 76 | 51 | 96 | 1953 | 28 | 1942 | 29.86 | 16.25 | -13.61 | 1.64 | 1936 | ||
| 29 | 76 | 47 | 76 | 50 | 100 | 1953 | 28 | 1899 | 29.97 | 16.25 | -13.72 | 3.63 | 1955 | ||
| 30 | 73 | 47 | 75 | 50 | 94 | 1922 | 20 | 1899 | 30.09 | 16.25 | -13.84 | 2.31 | 1927 | ||