| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 53.8 | 59.6 | 63.6 | 70.6 | 79.6 | 88.7 | 94.7 | 93.6 | 88.4 | 78.1 | 63.2 | 54.3 | 74.0 |
| Highest Mean Max. Temperature (F) | 59.8 | 65.8 | 71.1 | 78.1 | 87.6 | 96.7 | 100.2 | 97.2 | 94.3 | 84.8 | 71.2 | 60.8 | 100.2 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1987 | 1992 | 1981 | 1984 | 1996 | 1984 | 1991 | 1995 | 1976 | 1984 |
| Lowest Mean Max. Temperature (F) | 48.0 | 55.3 | 57.6 | 61.9 | 67.8 | 80.4 | 89.4 | 84.8 | 82.0 | 71.1 | 56.7 | 46.7 | 46.7 |
| Year Lowest Occurred | 1972 | 1989 | 1991 | 1975 | 1998 | 1998 | 1987 | 1976 | 1986 | 1984 | 1972 | 1972 | 1972 |
| Mean Temperature (F) | 45.8 | 50.3 | 53.5 | 58.2 | 65.2 | 72.6 | 78.0 | 77.3 | 73.3 | 65.2 | 53.7 | 46.2 | 61.6 |
| Highest Mean Temperature (F) | 51.9 | 54.8 | 58.6 | 63.2 | 71.5 | 78.8 | 83.1 | 80.7 | 78.1 | 70.6 | 59.5 | 51.1 | 83.1 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1987 | 1997 | 1981 | 1984 | 1996 | 1984 | 1991 | 1995 | 1995 | 1984 |
| Lowest Mean Temperature (F) | 39.9 | 45.9 | 48.7 | 50.6 | 57.7 | 67.6 | 73.0 | 71.9 | 67.6 | 59.9 | 48.3 | 39.3 | 39.3 |
| Year Lowest Occurred | 1972 | 1971 | 1973 | 1975 | 1998 | 1998 | 1987 | 1976 | 1986 | 1984 | 1994 | 1972 | 1972 |
| Mean Min. Temperature (F) | 37.8 | 41.0 | 43.3 | 45.8 | 50.8 | 56.5 | 61.2 | 60.9 | 58.2 | 52.3 | 44.2 | 38.0 | 49.2 |
| Highest Mean Min. Temperature (F) | 44.1 | 45.3 | 49.3 | 50.3 | 56.4 | 60.9 | 66.0 | 64.7 | 61.8 | 56.5 | 49.2 | 44.2 | 66.0 |
| Year Highest Occurred | 1995 | 1996 | 1978 | 1989 | 1997 | 1981 | 1988 | 1998 | 1984 | 1991 | 1997 | 1996 | 1988 |
| Lowest Mean Min. Temperature (F) | 31.8 | 36.1 | 38.3 | 39.3 | 46.7 | 52.5 | 56.5 | 57.9 | 53.1 | 47.4 | 39.6 | 31.9 | 31.8 |
| Year Lowest Occurred | 1972 | 1971 | 1977 | 1975 | 1971 | 1971 | 1987 | 1980 | 1986 | 1971 | 1994 | 1972 | 1972 |
| Mean Precipitation (in.) | 4.19 | 3.87 | 3.98 | 1.77 | 0.97 | 0.27 | 0.10 | 0.10 | 0.52 | 1.34 | 2.87 | 3.01 | 22.99 |
| Highest Precipitation (in.) | 10.51 | 10.03 | 11.39 | 5.22 | 5.70 | 1.52 | 1.63 | 1.31 | 3.34 | 4.71 | 8.43 | 8.43 | 11.39 |
| Year Highest Occurred | 1995 | 1986 | 1991 | 1978 | 1996 | 1995 | 1974 | 1975 | 1986 | 2000 | 1983 | 1996 | 1991 |
| Lowest Precipitation (in.) | 0.31 | 0.59 | 0.20 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1997 | 1985 | 1992 | 1994 | 2000 | 2000 | 1999 | 1995 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 595. | 412. | 363. | 227. | 107. | 14. | 0. | 0. | 8. | 102. | 346. | 584. | 2758. |
| Cooling Degree Days (F) | 0. | 0. | 5. | 22. | 114. | 242. | 402. | 378. | 256. | 108. | 7. | 0. | 1534. |