| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 49.0 | 52.3 | 60.9 | 70.8 | 78.2 | 85.4 | 89.2 | 87.7 | 81.9 | 71.8 | 62.5 | 52.8 | 70.2 |
| Highest Mean Max. Temperature (F) | 58.5 | 62.5 | 67.0 | 76.9 | 83.6 | 90.1 | 93.6 | 92.3 | 86.3 | 77.2 | 68.8 | 61.8 | 93.6 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1985 | 1991 | 1987 | 1993 | 1983 | 1980 | 1984 | 1999 | 1984 | 1993 |
| Lowest Mean Max. Temperature (F) | 38.2 | 41.9 | 54.7 | 65.5 | 74.2 | 81.6 | 84.9 | 83.6 | 78.4 | 66.5 | 54.9 | 41.0 | 38.2 |
| Year Lowest Occurred | 1977 | 1978 | 1996 | 1987 | 1992 | 1972 | 2000 | 1992 | 1999 | 1976 | 1996 | 1989 | 1977 |
| Mean Temperature (F) | 37.7 | 40.4 | 48.2 | 57.2 | 65.6 | 73.4 | 77.9 | 76.2 | 70.0 | 58.6 | 49.4 | 41.2 | 58.0 |
| Highest Mean Temperature (F) | 47.5 | 47.7 | 52.9 | 62.5 | 70.9 | 76.6 | 82.6 | 78.9 | 74.0 | 65.5 | 57.8 | 48.4 | 82.6 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1985 | 1991 | 1994 | 1993 | 1999 | 1980 | 1984 | 1985 | 1971 | 1993 |
| Lowest Mean Temperature (F) | 27.4 | 31.7 | 43.4 | 53.8 | 61.5 | 69.2 | 74.7 | 72.9 | 66.7 | 51.9 | 42.6 | 28.9 | 27.4 |
| Year Lowest Occurred | 1977 | 1978 | 1996 | 1997 | 1997 | 1972 | 1984 | 1982 | 1984 | 1987 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 26.3 | 28.5 | 35.5 | 43.6 | 53.0 | 61.3 | 66.5 | 64.6 | 58.0 | 45.3 | 36.3 | 29.5 | 45.7 |
| Highest Mean Min. Temperature (F) | 36.5 | 34.5 | 41.6 | 48.0 | 58.1 | 66.8 | 71.5 | 68.5 | 62.2 | 56.3 | 47.5 | 35.8 | 71.5 |
| Year Highest Occurred | 1974 | 1998 | 1973 | 1985 | 1991 | 1994 | 1993 | 1999 | 1998 | 1971 | 1985 | 1971 | 1993 |
| Lowest Mean Min. Temperature (F) | 16.5 | 21.5 | 30.7 | 39.8 | 47.9 | 56.8 | 63.1 | 60.1 | 52.5 | 36.3 | 28.9 | 16.7 | 16.5 |
| Year Lowest Occurred | 1977 | 1978 | 1981 | 1989 | 1997 | 1972 | 1983 | 1982 | 1981 | 1988 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 3.96 | 3.14 | 4.16 | 3.34 | 3.88 | 3.30 | 4.54 | 4.34 | 4.21 | 3.46 | 2.98 | 3.05 | 44.36 |
| Highest Precipitation (in.) | 10.24 | 5.19 | 8.34 | 8.51 | 7.87 | 7.54 | 14.50 | 11.66 | 16.50 | 9.30 | 8.28 | 6.29 | 16.50 |
| Year Highest Occurred | 1987 | 1984 | 1993 | 1987 | 1971 | 1989 | 1975 | 1990 | 1999 | 1971 | 1985 | 1973 | 1999 |
| Lowest Precipitation (in.) | 0.48 | 0.72 | 1.17 | 0.78 | 0.66 | 1.04 | 0.72 | 1.07 | 0.47 | 0.00 | 0.98 | 0.58 | 0.00 |
| Year Lowest Occurred | 1981 | 1991 | 1985 | 1985 | 1987 | 1999 | 1983 | 1975 | 1986 | 2000 | 1974 | 1988 | 2000 |
| Heating Degree Days (F) | 848. | 689. | 521. | 243. | 67. | 4. | 0. | 0. | 21. | 236. | 470. | 740. | 3839. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 8. | 86. | 254. | 398. | 347. | 168. | 35. | 2. | 0. | 1298. |