| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.3 | 43.1 | 47.0 | 52.4 | 61.2 | 70.5 | 79.5 | 79.6 | 72.3 | 60.7 | 44.4 | 39.8 | 57.6 |
| Highest Mean Max. Temperature (F) | 47.6 | 51.7 | 57.5 | 63.4 | 74.3 | 77.7 | 86.6 | 87.6 | 81.1 | 75.1 | 51.5 | 49.1 | 87.6 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1986 | 1985 | 1986 | 1991 | 1987 | 1976 | 1989 | 1986 |
| Lowest Mean Max. Temperature (F) | 33.8 | 36.5 | 41.2 | 44.9 | 53.1 | 63.5 | 71.3 | 70.8 | 62.1 | 50.7 | 37.2 | 33.0 | 33.0 |
| Year Lowest Occurred | 1993 | 1979 | 1971 | 1975 | 1998 | 1980 | 1983 | 1976 | 1978 | 1984 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 32.4 | 34.5 | 37.5 | 41.9 | 48.9 | 56.5 | 63.3 | 63.0 | 57.1 | 48.3 | 36.8 | 32.3 | 46.0 |
| Highest Mean Temperature (F) | 38.2 | 41.1 | 44.1 | 48.9 | 57.5 | 62.4 | 68.2 | 68.6 | 62.2 | 58.0 | 42.2 | 38.6 | 68.6 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1986 | 1985 | 1986 | 1991 | 1988 | 1995 | 1989 | 1986 |
| Lowest Mean Temperature (F) | 27.0 | 27.5 | 32.7 | 35.7 | 44.0 | 52.0 | 56.5 | 58.3 | 50.3 | 42.7 | 29.9 | 24.6 | 24.6 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1995 | 1986 | 1984 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 24.5 | 25.8 | 27.9 | 31.3 | 36.6 | 42.5 | 47.1 | 46.4 | 41.8 | 35.9 | 29.2 | 24.8 | 34.5 |
| Highest Mean Min. Temperature (F) | 29.9 | 30.6 | 31.8 | 35.9 | 40.7 | 47.2 | 51.0 | 50.6 | 45.8 | 42.5 | 34.1 | 28.3 | 51.0 |
| Year Highest Occurred | 1983 | 1992 | 1983 | 1990 | 1992 | 1986 | 1998 | 1977 | 1979 | 1988 | 1999 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | 17.2 | 17.3 | 23.4 | 26.6 | 33.0 | 39.3 | 41.5 | 41.5 | 38.1 | 32.2 | 22.6 | 16.1 | 16.1 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1991 | 1991 | 1993 | 1995 | 1986 | 1971 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 9.63 | 7.92 | 6.53 | 5.27 | 3.73 | 2.62 | 1.20 | 1.21 | 2.23 | 4.51 | 9.86 | 10.76 | 65.47 |
| Highest Precipitation (in.) | 17.83 | 19.59 | 14.49 | 10.47 | 8.18 | 5.36 | 3.80 | 4.14 | 9.41 | 10.59 | 20.34 | 27.16 | 27.16 |
| Year Highest Occurred | 1998 | 1986 | 1989 | 1993 | 1998 | 1984 | 1987 | 1999 | 1986 | 1984 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.56 | 2.43 | 0.69 | 1.87 | 0.22 | 0.62 | 0.05 | 0.00 | 0.00 | 0.12 | 2.08 | 2.27 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1987 | 1982 | 1989 | 1973 | 2000 | 1999 | 1987 | 1976 | 1976 | 2000 |
| Heating Degree Days (F) | 1010. | 855. | 854. | 694. | 498. | 265. | 119. | 122. | 261. | 522. | 846. | 1014. | 7060. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 10. | 64. | 60. | 24. | 5. | 0. | 0. | 163. |