| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 53.2 | 56.0 | 59.1 | 65.8 | 72.9 | 80.4 | 85.6 | 85.0 | 80.8 | 72.3 | 59.1 | 53.0 | 68.6 |
| Highest Mean Max. Temperature (F) | 59.7 | 64.0 | 66.6 | 74.4 | 79.5 | 86.7 | 89.6 | 90.5 | 86.7 | 78.1 | 68.7 | 59.8 | 90.5 |
| Year Highest Occurred | 1984 | 1991 | 1988 | 1987 | 1973 | 1981 | 1988 | 1998 | 1974 | 1991 | 1976 | 1989 | 1998 |
| Lowest Mean Max. Temperature (F) | 48.4 | 50.6 | 53.0 | 59.5 | 62.1 | 73.8 | 80.6 | 80.3 | 71.3 | 65.6 | 51.5 | 46.9 | 46.9 |
| Year Lowest Occurred | 1979 | 1998 | 1991 | 1975 | 1998 | 1982 | 1987 | 1991 | 1985 | 1984 | 1994 | 1971 | 1971 |
| Mean Temperature (F) | 46.3 | 48.0 | 49.9 | 54.4 | 59.9 | 65.9 | 70.3 | 69.7 | 67.1 | 61.0 | 50.6 | 45.7 | 57.4 |
| Highest Mean Temperature (F) | 50.1 | 54.2 | 55.3 | 60.0 | 64.9 | 72.8 | 74.7 | 74.3 | 71.9 | 66.2 | 58.4 | 50.1 | 74.7 |
| Year Highest Occurred | 1984 | 1991 | 1988 | 1987 | 1992 | 1981 | 1988 | 1998 | 1974 | 1991 | 1976 | 1989 | 1988 |
| Lowest Mean Temperature (F) | 42.1 | 43.3 | 45.0 | 49.0 | 52.9 | 59.2 | 65.3 | 66.0 | 59.9 | 55.0 | 43.8 | 38.8 | 38.8 |
| Year Lowest Occurred | 1987 | 1989 | 1985 | 1975 | 1998 | 1980 | 1987 | 1985 | 1985 | 1984 | 1994 | 1971 | 1971 |
| Mean Min. Temperature (F) | 39.3 | 39.9 | 40.6 | 42.9 | 46.8 | 51.3 | 55.0 | 54.3 | 53.4 | 49.6 | 42.0 | 38.3 | 46.1 |
| Highest Mean Min. Temperature (F) | 44.0 | 44.5 | 45.5 | 46.8 | 51.5 | 58.8 | 59.9 | 58.1 | 57.0 | 54.3 | 48.1 | 42.5 | 59.9 |
| Year Highest Occurred | 1998 | 1992 | 1978 | 1973 | 1992 | 1981 | 1988 | 1998 | 1974 | 1991 | 1976 | 1996 | 1988 |
| Lowest Mean Min. Temperature (F) | 34.4 | 34.8 | 34.8 | 38.5 | 41.9 | 44.3 | 50.0 | 50.1 | 48.5 | 43.4 | 35.8 | 30.6 | 30.6 |
| Year Lowest Occurred | 1987 | 1990 | 1985 | 1975 | 1977 | 1980 | 1987 | 1985 | 1985 | 1971 | 1985 | 1971 | 1971 |
| Mean Precipitation (in.) | 8.47 | 7.75 | 6.21 | 2.27 | 1.14 | 0.26 | 0.05 | 0.10 | 0.62 | 2.17 | 5.48 | 6.15 | 40.67 |
| Highest Precipitation (in.) | 28.29 | 28.49 | 19.12 | 7.43 | 5.09 | 1.66 | 1.12 | 1.42 | 3.08 | 5.94 | 17.33 | 17.95 | 28.49 |
| Year Highest Occurred | 1995 | 1986 | 1983 | 1982 | 1998 | 1993 | 1974 | 1976 | 1982 | 1979 | 1973 | 1996 | 1986 |
| Lowest Precipitation (in.) | 0.48 | 0.29 | 0.05 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.24 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1971 | 1988 | 1977 | 1992 | 1998 | 2000 | 2000 | 1995 | 1995 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 582. | 478. | 470. | 326. | 203. | 73. | 13. | 16. | 55. | 173. | 438. | 599. | 3426. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 7. | 43. | 99. | 177. | 160. | 119. | 48. | 6. | 0. | 659. |