| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 53.7 | 60.3 | 65.5 | 72.6 | 80.9 | 89.0 | 94.0 | 93.2 | 88.6 | 78.7 | 63.5 | 54.1 | 74.5 |
| Highest Mean Max. Temperature (F) | 59.0 | 66.4 | 71.9 | 80.9 | 89.5 | 94.6 | 98.2 | 98.3 | 94.9 | 86.3 | 72.4 | 60.3 | 98.3 |
| Year Highest Occurred | 1976 | 1991 | 1972 | 1987 | 1992 | 1981 | 1988 | 1998 | 1991 | 1991 | 1995 | 1999 | 1998 |
| Lowest Mean Max. Temperature (F) | 47.8 | 55.6 | 59.0 | 64.7 | 70.4 | 84.0 | 88.2 | 86.3 | 81.2 | 71.9 | 56.0 | 47.7 | 47.7 |
| Year Lowest Occurred | 1985 | 1998 | 1991 | 1975 | 1998 | 1980 | 1987 | 1976 | 1986 | 1972 | 1982 | 1972 | 1972 |
| Mean Temperature (F) | 45.7 | 50.6 | 54.9 | 59.9 | 66.7 | 73.0 | 76.4 | 75.5 | 72.2 | 64.5 | 53.0 | 45.6 | 61.5 |
| Highest Mean Temperature (F) | 51.3 | 55.2 | 60.0 | 65.0 | 73.3 | 78.7 | 80.9 | 79.5 | 76.4 | 71.0 | 59.8 | 50.9 | 80.9 |
| Year Highest Occurred | 1995 | 1991 | 1997 | 1987 | 1997 | 1981 | 1988 | 1998 | 1991 | 1991 | 1995 | 1995 | 1988 |
| Lowest Mean Temperature (F) | 40.3 | 46.7 | 50.5 | 53.1 | 59.6 | 68.7 | 72.4 | 71.4 | 66.6 | 60.1 | 48.1 | 40.3 | 40.3 |
| Year Lowest Occurred | 1972 | 1974 | 1973 | 1975 | 1977 | 1980 | 1987 | 1976 | 1986 | 1971 | 1982 | 1972 | 1972 |
| Mean Min. Temperature (F) | 37.6 | 40.9 | 44.2 | 47.2 | 52.4 | 57.0 | 58.7 | 57.8 | 55.8 | 50.3 | 42.5 | 37.0 | 48.5 |
| Highest Mean Min. Temperature (F) | 46.5 | 46.9 | 49.2 | 51.2 | 59.1 | 62.8 | 63.6 | 61.3 | 61.1 | 55.6 | 48.0 | 43.7 | 63.6 |
| Year Highest Occurred | 1995 | 1996 | 1993 | 1992 | 1997 | 1981 | 1988 | 1996 | 1998 | 1991 | 1997 | 1995 | 1988 |
| Lowest Mean Min. Temperature (F) | 31.5 | 34.7 | 39.3 | 41.5 | 47.1 | 53.5 | 54.7 | 53.2 | 52.0 | 45.0 | 37.4 | 30.2 | 30.2 |
| Year Lowest Occurred | 1976 | 1974 | 1977 | 1975 | 1977 | 1980 | 1975 | 1979 | 1986 | 1971 | 1978 | 1976 | 1976 |
| Mean Precipitation (in.) | 4.51 | 4.13 | 3.28 | 1.10 | 0.57 | 0.15 | 0.03 | 0.05 | 0.41 | 1.07 | 2.50 | 2.98 | 20.78 |
| Highest Precipitation (in.) | 13.28 | 12.20 | 9.11 | 4.56 | 2.42 | 0.70 | 0.84 | 0.43 | 3.72 | 3.21 | 6.83 | 7.39 | 13.28 |
| Year Highest Occurred | 1995 | 1998 | 1991 | 1982 | 1998 | 1995 | 1974 | 1976 | 1982 | 1972 | 1984 | 1983 | 1995 |
| Lowest Precipitation (in.) | 0.35 | 0.04 | 0.09 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 |
| Year Lowest Occurred | 1975 | 1971 | 1972 | 1977 | 1992 | 1996 | 2000 | 2000 | 1999 | 1995 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 600. | 403. | 323. | 188. | 78. | 5. | 0. | 0. | 12. | 105. | 367. | 602. | 2683. |
| Cooling Degree Days (F) | 0. | 0. | 9. | 37. | 129. | 244. | 351. | 325. | 227. | 89. | 6. | 0. | 1417. |