| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.6 | 39.1 | 45.7 | 54.0 | 62.9 | 72.6 | 81.8 | 81.7 | 72.0 | 59.9 | 42.7 | 35.5 | 56.9 |
| Highest Mean Max. Temperature (F) | 42.3 | 49.1 | 53.9 | 63.5 | 73.9 | 79.6 | 87.7 | 87.9 | 78.5 | 71.0 | 53.4 | 43.5 | 87.9 |
| Year Highest Occurred | 1999 | 1995 | 1992 | 1987 | 1992 | 1974 | 1985 | 1971 | 1990 | 1988 | 1999 | 1976 | 1971 |
| Lowest Mean Max. Temperature (F) | 26.8 | 27.9 | 40.2 | 45.1 | 53.2 | 66.1 | 72.4 | 70.7 | 61.2 | 50.8 | 34.6 | 28.1 | 26.8 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1984 | 1994 | 1972 | 1979 |
| Mean Temperature (F) | 27.0 | 31.0 | 36.4 | 42.4 | 50.1 | 58.4 | 66.4 | 66.3 | 58.0 | 47.7 | 34.5 | 27.9 | 45.5 |
| Highest Mean Temperature (F) | 32.6 | 38.9 | 42.8 | 49.8 | 57.8 | 64.2 | 71.6 | 72.4 | 64.3 | 56.9 | 42.4 | 34.6 | 72.4 |
| Year Highest Occurred | 1999 | 1995 | 1992 | 1990 | 1992 | 1986 | 1985 | 1971 | 1990 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Temperature (F) | 18.5 | 19.7 | 31.2 | 35.4 | 43.1 | 53.4 | 56.2 | 59.7 | 49.5 | 41.9 | 26.9 | 21.1 | 18.5 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1977 | 1991 | 1993 | 1976 | 1986 | 1984 | 1985 | 1972 | 1979 |
| Mean Min. Temperature (F) | 19.4 | 22.8 | 27.1 | 30.7 | 37.2 | 44.1 | 50.9 | 50.8 | 43.9 | 35.5 | 26.3 | 20.2 | 34.1 |
| Highest Mean Min. Temperature (F) | 25.9 | 29.7 | 31.7 | 36.4 | 41.9 | 49.2 | 56.2 | 56.9 | 50.1 | 42.7 | 31.4 | 29.2 | 56.9 |
| Year Highest Occurred | 1976 | 1992 | 1992 | 1990 | 1997 | 1986 | 1998 | 1971 | 1990 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Min. Temperature (F) | 10.3 | 11.4 | 21.7 | 25.8 | 33.1 | 38.7 | 40.0 | 43.7 | 37.3 | 32.4 | 18.1 | 12.3 | 10.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1999 | 1993 | 1993 | 1972 | 1971 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.41 | 1.02 | 1.30 | 1.03 | 1.31 | 0.80 | 0.45 | 0.58 | 0.63 | 0.79 | 1.25 | 1.23 | 11.80 |
| Highest Precipitation (in.) | 5.65 | 3.24 | 2.93 | 2.88 | 4.11 | 1.92 | 1.76 | 3.45 | 1.93 | 2.30 | 2.94 | 3.51 | 5.65 |
| Year Highest Occurred | 1998 | 1986 | 1999 | 1995 | 1998 | 1992 | 1993 | 1976 | 1982 | 1985 | 1998 | 1995 | 1998 |
| Lowest Precipitation (in.) | 0.18 | 0.26 | 0.03 | 0.29 | 0.12 | 0.03 | 0.00 | 0.01 | 0.00 | 0.00 | 0.04 | 0.05 | 0.00 |
| Year Lowest Occurred | 1984 | 1990 | 1976 | 1973 | 1992 | 1973 | 1988 | 1971 | 1987 | 1988 | 1993 | 1976 | 1988 |
| Heating Degree Days (F) | 1177. | 953. | 887. | 680. | 467. | 229. | 91. | 81. | 256. | 540. | 915. | 1152. | 7428. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 29. | 133. | 120. | 45. | 3. | 0. | 0. | 332. |