| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.2 | 40.2 | 48.5 | 57.0 | 66.5 | 77.2 | 81.1 | 78.8 | 72.3 | 61.6 | 46.3 | 35.8 | 58.3 |
| Highest Mean Max. Temperature (F) | 45.7 | 50.9 | 58.2 | 64.9 | 73.9 | 81.7 | 86.2 | 82.7 | 77.0 | 67.4 | 57.0 | 49.3 | 86.2 |
| Year Highest Occurred | 1986 | 1995 | 1989 | 1981 | 1996 | 1980 | 1980 | 1985 | 1998 | 1988 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 21.5 | 30.0 | 39.1 | 48.7 | 61.8 | 72.9 | 77.4 | 74.8 | 68.5 | 53.1 | 34.2 | 22.8 | 21.5 |
| Year Lowest Occurred | 1992 | 1979 | 1979 | 1973 | 1978 | 1983 | 1992 | 1993 | 1975 | 1984 | 1972 | 1991 | 1992 |
| Mean Temperature (F) | 17.9 | 24.7 | 33.8 | 41.5 | 50.6 | 60.0 | 64.7 | 62.6 | 55.0 | 43.9 | 30.1 | 19.6 | 42.0 |
| Highest Mean Temperature (F) | 27.5 | 35.2 | 38.8 | 48.3 | 56.3 | 63.6 | 67.8 | 65.8 | 59.1 | 47.2 | 36.7 | 31.2 | 67.8 |
| Year Highest Occurred | 1999 | 1995 | 1999 | 1981 | 1996 | 1981 | 1980 | 1995 | 1998 | 1992 | 1981 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 4.7 | 13.8 | 28.6 | 36.2 | 46.8 | 56.7 | 61.9 | 58.5 | 49.9 | 39.3 | 20.7 | 7.5 | 4.7 |
| Year Lowest Occurred | 1992 | 1974 | 1984 | 1975 | 1983 | 1983 | 1995 | 1974 | 1975 | 1976 | 1972 | 1991 | 1992 |
| Mean Min. Temperature (F) | 1.5 | 9.2 | 19.0 | 25.9 | 34.7 | 42.8 | 48.2 | 46.4 | 37.7 | 26.2 | 13.9 | 3.4 | 25.7 |
| Highest Mean Min. Temperature (F) | 11.8 | 19.4 | 23.0 | 31.6 | 38.8 | 46.6 | 51.4 | 49.4 | 43.4 | 31.6 | 20.2 | 13.1 | 51.4 |
| Year Highest Occurred | 1999 | 1995 | 1990 | 1981 | 1992 | 1981 | 1977 | 1982 | 1997 | 1972 | 1998 | 1980 | 1977 |
| Lowest Mean Min. Temperature (F) | -12.2 | -3.7 | 13.4 | 20.8 | 28.9 | 38.9 | 44.8 | 41.4 | 31.3 | 21.8 | 5.9 | -7.8 | -12.2 |
| Year Lowest Occurred | 1992 | 1974 | 1971 | 1974 | 1971 | 1971 | 1974 | 1975 | 1975 | 1976 | 1979 | 1991 | 1992 |
| Mean Precipitation (in.) | 0.32 | 0.31 | 0.58 | 0.64 | 1.00 | 0.73 | 1.44 | 1.50 | 1.01 | 0.79 | 0.58 | 0.33 | 9.23 |
| Highest Precipitation (in.) | 0.96 | 1.13 | 1.81 | 2.39 | 2.95 | 1.87 | 2.58 | 3.58 | 2.94 | 2.40 | 1.98 | 1.18 | 3.58 |
| Year Highest Occurred | 1979 | 1987 | 1990 | 1986 | 1999 | 1983 | 1995 | 1982 | 1982 | 1984 | 1994 | 1983 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.04 | 0.00 | 0.03 | 0.10 | 0.29 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1995 | 1971 | 2000 | 1975 | 1980 | 1987 | 1995 | 1979 | 1995 | 1989 | 1996 | 1998 |
| Heating Degree Days (F) | 1462. | 1128. | 969. | 708. | 446. | 165. | 55. | 101. | 306. | 654. | 1048. | 1407. | 8449. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 13. | 44. | 26. | 4. | 0. | 0. | 0. | 87. |