| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.4 | 34.7 | 37.0 | 41.8 | 49.0 | 57.6 | 67.5 | 68.7 | 62.3 | 52.5 | 38.0 | 34.6 | 48.2 |
| Highest Mean Max. Temperature (F) | 41.5 | 43.5 | 44.0 | 50.7 | 61.6 | 64.6 | 74.9 | 76.7 | 71.8 | 64.3 | 49.7 | 44.9 | 76.7 |
| Year Highest Occurred | 1981 | 1995 | 1994 | 1987 | 1992 | 1977 | 1994 | 1981 | 1974 | 1987 | 1976 | 1989 | 1981 |
| Lowest Mean Max. Temperature (F) | 28.0 | 28.4 | 31.4 | 35.5 | 40.7 | 50.6 | 56.0 | 58.8 | 52.3 | 43.1 | 29.7 | 27.5 | 27.5 |
| Year Lowest Occurred | 1993 | 1999 | 1971 | 1975 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1971 | 1971 |
| Mean Temperature (F) | 26.1 | 26.6 | 28.0 | 31.9 | 38.3 | 45.4 | 53.6 | 54.5 | 49.1 | 41.3 | 30.0 | 26.5 | 37.6 |
| Highest Mean Temperature (F) | 32.4 | 34.4 | 35.1 | 38.7 | 48.4 | 51.7 | 59.4 | 59.4 | 55.5 | 50.2 | 39.6 | 33.7 | 59.4 |
| Year Highest Occurred | 1981 | 1995 | 1992 | 1990 | 1992 | 1992 | 1994 | 1986 | 1974 | 1988 | 1976 | 1989 | 1994 |
| Lowest Mean Temperature (F) | 20.9 | 18.9 | 22.9 | 24.7 | 31.7 | 40.2 | 44.9 | 47.8 | 42.0 | 34.4 | 22.0 | 19.9 | 18.9 |
| Year Lowest Occurred | 1974 | 1989 | 1971 | 1975 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1971 | 1989 |
| Mean Min. Temperature (F) | 17.7 | 18.4 | 19.0 | 22.0 | 27.5 | 33.2 | 39.7 | 40.3 | 35.9 | 30.1 | 22.0 | 18.3 | 27.0 |
| Highest Mean Min. Temperature (F) | 23.3 | 25.3 | 26.6 | 27.7 | 35.1 | 39.0 | 44.6 | 45.7 | 40.3 | 36.5 | 29.8 | 22.5 | 45.7 |
| Year Highest Occurred | 1981 | 1995 | 1992 | 1992 | 1992 | 1992 | 1985 | 1977 | 1991 | 1988 | 1995 | 1980 | 1977 |
| Lowest Mean Min. Temperature (F) | 10.6 | 9.0 | 14.3 | 14.0 | 22.7 | 29.1 | 33.8 | 36.1 | 30.4 | 25.6 | 14.3 | 11.5 | 9.0 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1991 | 1983 | 1995 | 1972 | 1984 | 1994 | 1978 | 1989 |
| Mean Precipitation (in.) | 9.81 | 8.47 | 7.79 | 5.34 | 3.50 | 2.03 | 0.95 | 1.07 | 2.21 | 4.49 | 10.53 | 10.50 | 66.69 |
| Highest Precipitation (in.) | 17.36 | 17.47 | 15.09 | 10.59 | 7.41 | 4.68 | 4.78 | 4.50 | 8.75 | 10.32 | 24.16 | 23.66 | 24.16 |
| Year Highest Occurred | 1998 | 1986 | 1989 | 1993 | 1993 | 1995 | 1995 | 1976 | 1986 | 1979 | 1973 | 1981 | 1973 |
| Lowest Precipitation (in.) | 0.63 | 2.00 | 0.85 | 1.29 | 0.17 | 0.70 | 0.00 | 0.00 | 0.00 | 0.02 | 1.86 | 0.90 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1977 | 1982 | 1986 | 1988 | 1994 | 1999 | 1987 | 1976 | 1976 | 1988 |
| Heating Degree Days (F) | 1207. | 1077. | 1132. | 993. | 829. | 588. | 362. | 332. | 481. | 735. | 1050. | 1194. | 9980. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 9. | 7. | 5. | 0. | 0. | 0. | 21. |