| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.3 | 34.8 | 43.1 | 54.2 | 64.5 | 71.8 | 78.9 | 78.8 | 67.1 | 53.4 | 37.0 | 29.6 | 53.5 |
| Highest Mean Max. Temperature (F) | 35.5 | 40.6 | 51.7 | 61.6 | 70.7 | 79.3 | 88.1 | 85.9 | 75.5 | 61.1 | 44.0 | 36.6 | 88.1 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1987 | 1993 | 1986 | 1985 | 1973 | 1990 | 1974 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 15.5 | 24.5 | 37.7 | 46.7 | 56.0 | 64.9 | 66.5 | 72.0 | 58.0 | 46.7 | 23.6 | 19.0 | 15.5 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1975 | 1996 | 1981 | 1993 | 1975 | 1985 | 1995 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 22.4 | 26.8 | 33.7 | 42.3 | 51.1 | 58.0 | 63.6 | 63.1 | 53.1 | 42.6 | 31.0 | 23.8 | 42.6 |
| Highest Mean Temperature (F) | 30.1 | 33.0 | 39.5 | 47.0 | 56.1 | 63.3 | 69.0 | 67.7 | 59.4 | 45.7 | 37.7 | 30.7 | 69.0 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1987 | 1993 | 1986 | 1985 | 1971 | 1998 | 1988 | 1999 | 1979 | 1985 |
| Lowest Mean Temperature (F) | 4.1 | 14.2 | 28.2 | 36.2 | 46.3 | 54.0 | 56.5 | 58.1 | 47.9 | 38.6 | 16.9 | 11.3 | 4.1 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1996 | 1981 | 1993 | 1980 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 15.5 | 18.7 | 24.2 | 30.3 | 37.7 | 44.1 | 48.2 | 47.4 | 39.1 | 31.7 | 25.0 | 18.0 | 31.7 |
| Highest Mean Min. Temperature (F) | 24.7 | 25.3 | 29.3 | 34.1 | 41.4 | 47.5 | 53.6 | 50.9 | 43.6 | 34.8 | 31.4 | 25.2 | 53.6 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1988 | 1993 | 1992 | 1998 | 1999 | 1978 | 1973 | 1999 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | -7.3 | 3.8 | 17.9 | 24.7 | 33.4 | 41.7 | 44.6 | 43.5 | 36.2 | 26.6 | 10.2 | 3.6 | -7.3 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1982 | 1982 | 1985 | 1999 | 2000 | 1983 | 1991 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 3.16 | 2.19 | 1.83 | 1.78 | 2.66 | 3.22 | 1.97 | 1.67 | 1.87 | 2.07 | 3.10 | 3.22 | 28.74 |
| Highest Precipitation (in.) | 5.77 | 5.10 | 4.13 | 3.23 | 6.13 | 6.94 | 5.11 | 4.48 | 4.83 | 5.18 | 7.53 | 7.72 | 7.72 |
| Year Highest Occurred | 1974 | 1982 | 1997 | 1993 | 1996 | 1995 | 1993 | 1978 | 1985 | 1995 | 1995 | 1980 | 1980 |
| Lowest Precipitation (in.) | 0.16 | 0.33 | 0.43 | 0.33 | 0.96 | 0.75 | 0.09 | 0.15 | 0.02 | 0.14 | 0.65 | 0.68 | 0.02 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1983 | 1977 | 1985 | 1994 | 1990 | 1974 | 1979 | 1986 | 1990 |
| Heating Degree Days (F) | 1320. | 1070. | 972. | 683. | 431. | 223. | 114. | 123. | 362. | 695. | 1019. | 1278. | 8290. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 12. | 70. | 63. | 5. | 0. | 0. | 0. | 150. |