| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.6 | 34.2 | 43.1 | 55.6 | 66.6 | 74.3 | 78.9 | 77.3 | 70.1 | 59.1 | 46.9 | 35.9 | 56.1 |
| Highest Mean Max. Temperature (F) | 39.8 | 44.8 | 50.2 | 60.9 | 73.1 | 77.8 | 85.0 | 82.6 | 78.8 | 66.9 | 53.4 | 43.2 | 85.0 |
| Year Highest Occurred | 1990 | 1976 | 1976 | 1987 | 1991 | 1991 | 1999 | 1980 | 1980 | 1971 | 1975 | 1998 | 1999 |
| Lowest Mean Max. Temperature (F) | 22.1 | 24.0 | 36.7 | 47.8 | 61.8 | 67.9 | 73.2 | 73.3 | 66.0 | 52.6 | 40.7 | 23.9 | 22.1 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1975 | 1973 | 1972 | 2000 | 2000 | 1975 | 1976 | 1976 | 1989 | 1982 |
| Mean Temperature (F) | 21.9 | 24.1 | 33.0 | 44.6 | 55.8 | 64.3 | 69.2 | 67.2 | 59.9 | 49.1 | 38.3 | 27.6 | 46.3 |
| Highest Mean Temperature (F) | 30.5 | 32.3 | 39.3 | 48.0 | 61.7 | 67.5 | 74.5 | 72.7 | 64.7 | 56.0 | 43.2 | 33.6 | 74.5 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1991 | 1991 | 1994 | 1999 | 1980 | 1980 | 1971 | 1982 | 1982 | 1999 |
| Lowest Mean Temperature (F) | 11.6 | 13.9 | 26.7 | 37.3 | 51.5 | 60.1 | 65.3 | 64.2 | 56.4 | 43.7 | 33.3 | 15.3 | 11.6 |
| Year Lowest Occurred | 1977 | 1978 | 1984 | 1975 | 1973 | 1972 | 1976 | 1972 | 1975 | 1972 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 12.1 | 14.0 | 22.8 | 33.5 | 45.0 | 54.2 | 59.5 | 57.1 | 49.6 | 39.0 | 29.7 | 19.2 | 36.3 |
| Highest Mean Min. Temperature (F) | 22.1 | 23.5 | 28.3 | 36.8 | 50.3 | 57.6 | 63.9 | 62.7 | 53.6 | 45.0 | 36.4 | 25.7 | 63.9 |
| Year Highest Occurred | 1998 | 1998 | 2000 | 1991 | 1991 | 1994 | 1999 | 1980 | 1982 | 1971 | 1982 | 1996 | 1999 |
| Lowest Mean Min. Temperature (F) | 0.5 | 2.1 | 16.6 | 26.7 | 40.9 | 49.6 | 53.8 | 53.3 | 44.7 | 33.9 | 24.6 | 6.6 | 0.5 |
| Year Lowest Occurred | 1977 | 1978 | 1984 | 1975 | 1974 | 1977 | 1976 | 1972 | 1976 | 1974 | 1981 | 1989 | 1977 |
| Mean Precipitation (in.) | 3.21 | 2.02 | 3.74 | 3.99 | 4.51 | 4.54 | 3.89 | 3.89 | 4.73 | 3.50 | 4.00 | 3.31 | 45.33 |
| Highest Precipitation (in.) | 8.30 | 4.58 | 7.94 | 11.62 | 11.85 | 11.17 | 9.24 | 6.85 | 10.85 | 8.65 | 10.13 | 7.13 | 11.85 |
| Year Highest Occurred | 1979 | 1986 | 1983 | 1983 | 1989 | 1972 | 1984 | 1994 | 1999 | 1995 | 1972 | 1996 | 1989 |
| Lowest Precipitation (in.) | 0.32 | 0.17 | 0.34 | 1.33 | 1.45 | 0.29 | 1.58 | 0.85 | 0.75 | 0.78 | 1.40 | 0.03 | 0.03 |
| Year Lowest Occurred | 1989 | 1988 | 1981 | 1988 | 1993 | 1990 | 1993 | 1981 | 1984 | 1982 | 1981 | 1988 | 1988 |
| Heating Degree Days (F) | 1339. | 1145. | 994. | 614. | 294. | 74. | 20. | 35. | 169. | 495. | 801. | 1160. | 7140. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 50. | 150. | 103. | 14. | 1. | 0. | 0. | 327. |