| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 42.7 | 47.7 | 53.0 | 59.5 | 66.3 | 71.4 | 78.1 | 78.8 | 73.7 | 62.3 | 47.9 | 42.0 | 60.3 |
| Highest Mean Max. Temperature (F) | 52.9 | 55.1 | 62.6 | 66.6 | 74.3 | 78.8 | 88.0 | 86.3 | 83.0 | 73.5 | 55.7 | 47.4 | 88.0 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1977 | 1992 | 1982 | 1985 | 1981 | 1974 | 1987 | 1976 | 1975 | 1985 |
| Lowest Mean Max. Temperature (F) | 37.1 | 40.0 | 44.4 | 54.0 | 58.8 | 64.5 | 67.2 | 71.1 | 64.1 | 55.5 | 39.6 | 35.0 | 35.0 |
| Year Lowest Occurred | 1980 | 1979 | 1971 | 1993 | 1996 | 1971 | 1993 | 1976 | 1978 | 1990 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 36.0 | 39.1 | 43.2 | 48.1 | 54.4 | 59.6 | 64.8 | 64.9 | 59.2 | 50.1 | 40.8 | 35.9 | 49.7 |
| Highest Mean Temperature (F) | 43.5 | 44.4 | 48.0 | 51.8 | 58.4 | 64.4 | 71.0 | 69.6 | 63.3 | 55.3 | 44.5 | 40.5 | 71.0 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1977 | 1983 | 1982 | 1985 | 1986 | 1990 | 1988 | 1987 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 29.9 | 32.8 | 37.2 | 44.4 | 50.0 | 54.6 | 59.4 | 61.1 | 54.2 | 46.9 | 32.7 | 29.2 | 29.2 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1975 | 1999 | 1971 | 1993 | 1980 | 1972 | 1984 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 29.2 | 30.5 | 33.3 | 36.7 | 42.4 | 47.8 | 51.5 | 51.0 | 44.6 | 37.9 | 33.7 | 29.7 | 39.0 |
| Highest Mean Min. Temperature (F) | 35.0 | 34.5 | 36.3 | 40.4 | 46.3 | 51.3 | 56.0 | 55.1 | 48.9 | 42.6 | 37.8 | 35.4 | 56.0 |
| Year Highest Occurred | 1995 | 1998 | 1984 | 1994 | 1993 | 1986 | 1998 | 1977 | 1990 | 1992 | 1995 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 22.6 | 24.5 | 28.9 | 33.2 | 38.7 | 44.6 | 48.2 | 46.6 | 40.6 | 32.8 | 25.9 | 22.8 | 22.6 |
| Year Lowest Occurred | 1980 | 1989 | 1976 | 1999 | 1999 | 1971 | 1973 | 1973 | 1989 | 1987 | 1985 | 1972 | 1980 |
| Mean Precipitation (in.) | 9.32 | 7.04 | 5.32 | 3.67 | 2.59 | 2.05 | 1.01 | 1.14 | 2.39 | 4.63 | 9.30 | 9.34 | 57.80 |
| Highest Precipitation (in.) | 18.13 | 15.67 | 13.51 | 7.96 | 4.52 | 5.09 | 3.02 | 4.03 | 5.93 | 11.70 | 22.60 | 18.45 | 22.60 |
| Year Highest Occurred | 1990 | 1996 | 1997 | 1991 | 1978 | 1981 | 1983 | 1976 | 1972 | 1997 | 1995 | 1975 | 1995 |
| Lowest Precipitation (in.) | 0.59 | 0.12 | 1.01 | 0.82 | 0.22 | 0.71 | 0.00 | 0.05 | 0.00 | 0.18 | 2.11 | 1.91 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1999 | 1992 | 1982 | 1984 | 1973 | 1993 | 1987 | 1979 | 1985 | 1984 |
| Heating Degree Days (F) | 901. | 726. | 678. | 507. | 333. | 182. | 76. | 78. | 195. | 462. | 727. | 904. | 5769. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 21. | 71. | 75. | 20. | 0. | 0. | 0. | 189. |