| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.7 | 41.0 | 51.6 | 61.4 | 70.0 | 77.4 | 85.1 | 86.3 | 76.3 | 61.4 | 42.6 | 33.8 | 60.1 |
| Highest Mean Max. Temperature (F) | 40.9 | 48.6 | 61.7 | 67.8 | 79.5 | 87.3 | 94.6 | 94.9 | 88.4 | 69.1 | 48.0 | 39.2 | 94.9 |
| Year Highest Occurred | 1990 | 1991 | 1992 | 1987 | 1992 | 1992 | 1985 | 1986 | 1990 | 1987 | 1999 | 1979 | 1986 |
| Lowest Mean Max. Temperature (F) | 20.7 | 34.6 | 42.2 | 54.0 | 62.9 | 69.9 | 73.6 | 76.6 | 67.4 | 56.1 | 30.4 | 25.6 | 20.7 |
| Year Lowest Occurred | 1979 | 1975 | 1975 | 1975 | 1974 | 1971 | 1993 | 1976 | 1985 | 1995 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 26.2 | 31.9 | 39.8 | 47.3 | 55.2 | 61.7 | 67.1 | 67.0 | 57.8 | 46.2 | 34.9 | 27.1 | 46.9 |
| Highest Mean Temperature (F) | 34.1 | 39.4 | 46.5 | 52.0 | 61.8 | 69.2 | 73.6 | 72.5 | 64.7 | 51.7 | 40.3 | 33.7 | 73.6 |
| Year Highest Occurred | 1990 | 1992 | 1992 | 1987 | 1993 | 1992 | 1998 | 1986 | 1998 | 1988 | 1998 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 9.2 | 23.3 | 33.1 | 42.1 | 50.2 | 56.5 | 61.4 | 61.5 | 52.3 | 42.8 | 22.1 | 17.2 | 9.2 |
| Year Lowest Occurred | 1979 | 1975 | 1975 | 1972 | 1974 | 1976 | 1993 | 1975 | 1971 | 1984 | 1985 | 1978 | 1979 |
| Mean Min. Temperature (F) | 18.6 | 22.7 | 28.0 | 33.2 | 40.3 | 46.0 | 49.1 | 47.7 | 39.3 | 30.9 | 27.1 | 20.3 | 33.6 |
| Highest Mean Min. Temperature (F) | 28.5 | 32.4 | 32.9 | 37.7 | 46.2 | 51.1 | 55.8 | 52.2 | 45.2 | 35.8 | 33.6 | 28.3 | 55.8 |
| Year Highest Occurred | 1994 | 1992 | 1987 | 1994 | 1993 | 1992 | 1998 | 1997 | 1997 | 1993 | 1998 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | -2.2 | 11.9 | 23.0 | 27.5 | 36.6 | 42.1 | 44.8 | 44.1 | 34.7 | 23.9 | 13.8 | 6.7 | -2.2 |
| Year Lowest Occurred | 1979 | 1975 | 1976 | 1982 | 1982 | 1976 | 1972 | 1973 | 1984 | 1974 | 1985 | 1978 | 1979 |
| Mean Precipitation (in.) | 2.28 | 1.97 | 2.05 | 1.62 | 2.14 | 1.76 | 1.20 | 1.01 | 1.02 | 1.21 | 2.72 | 2.92 | 21.90 |
| Highest Precipitation (in.) | 5.81 | 4.92 | 4.21 | 3.24 | 6.42 | 4.06 | 4.73 | 3.79 | 2.76 | 3.05 | 8.32 | 5.64 | 8.32 |
| Year Highest Occurred | 1983 | 1999 | 1995 | 1993 | 1990 | 1991 | 1993 | 1976 | 1982 | 1996 | 1973 | 1973 | 1973 |
| Lowest Precipitation (in.) | 0.45 | 0.46 | 0.53 | 0.13 | 0.62 | 0.30 | 0.00 | 0.00 | 0.00 | 0.00 | 0.29 | 0.50 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1977 | 1985 | 1974 | 1994 | 1986 | 1990 | 1978 | 1976 | 1985 | 1994 |
| Heating Degree Days (F) | 1204. | 928. | 783. | 532. | 315. | 152. | 69. | 65. | 251. | 585. | 905. | 1176. | 6965. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 10. | 53. | 135. | 127. | 35. | 0. | 0. | 0. | 360. |