| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.9 | 38.7 | 48.1 | 57.5 | 66.1 | 72.8 | 80.7 | 81.3 | 72.3 | 57.9 | 40.9 | 31.8 | 56.7 |
| Highest Mean Max. Temperature (F) | 39.9 | 48.2 | 58.3 | 63.1 | 72.8 | 79.9 | 90.4 | 88.5 | 79.3 | 63.5 | 46.4 | 37.5 | 90.4 |
| Year Highest Occurred | 1990 | 1988 | 1992 | 1987 | 1971 | 1992 | 1985 | 1971 | 1990 | 1988 | 1999 | 1989 | 1985 |
| Lowest Mean Max. Temperature (F) | 22.8 | 32.5 | 40.9 | 51.7 | 59.3 | 66.5 | 70.6 | 73.5 | 64.5 | 51.7 | 27.5 | 22.4 | 22.4 |
| Year Lowest Occurred | 1979 | 1975 | 1975 | 1993 | 1974 | 1981 | 1993 | 1975 | 1986 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 23.3 | 29.2 | 37.6 | 46.1 | 54.2 | 60.6 | 67.2 | 67.4 | 58.8 | 46.7 | 33.5 | 23.9 | 45.7 |
| Highest Mean Temperature (F) | 31.1 | 37.1 | 45.5 | 51.1 | 60.4 | 67.5 | 74.6 | 72.7 | 65.6 | 52.1 | 38.4 | 30.3 | 74.6 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1993 | 1992 | 1985 | 1986 | 1998 | 1988 | 1999 | 1991 | 1985 |
| Lowest Mean Temperature (F) | 11.9 | 21.2 | 30.2 | 40.8 | 48.7 | 55.1 | 60.1 | 61.7 | 51.9 | 42.4 | 21.5 | 13.9 | 11.9 |
| Year Lowest Occurred | 1979 | 1975 | 1971 | 1972 | 1974 | 1981 | 1993 | 1975 | 1972 | 1984 | 1985 | 1984 | 1979 |
| Mean Min. Temperature (F) | 14.6 | 19.6 | 27.1 | 34.7 | 42.3 | 48.3 | 53.6 | 53.5 | 45.3 | 35.4 | 26.0 | 15.9 | 34.7 |
| Highest Mean Min. Temperature (F) | 24.5 | 29.4 | 32.6 | 39.0 | 48.2 | 55.0 | 60.4 | 57.8 | 52.0 | 40.6 | 30.6 | 23.6 | 60.4 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1993 | 1992 | 1998 | 1986 | 1998 | 1988 | 1983 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 1.0 | 8.8 | 18.4 | 28.6 | 38.1 | 43.6 | 49.3 | 46.9 | 37.8 | 31.6 | 15.5 | 4.1 | 1.0 |
| Year Lowest Occurred | 1979 | 1985 | 1971 | 1982 | 1974 | 1981 | 1983 | 1980 | 1972 | 1972 | 1985 | 1984 | 1979 |
| Mean Precipitation (in.) | 1.37 | 1.44 | 1.18 | 1.07 | 1.70 | 1.58 | 0.88 | 0.82 | 0.76 | 0.88 | 1.53 | 1.55 | 14.76 |
| Highest Precipitation (in.) | 3.20 | 3.83 | 3.85 | 2.51 | 5.51 | 3.94 | 3.42 | 3.13 | 3.22 | 2.91 | 7.16 | 3.53 | 7.16 |
| Year Highest Occurred | 1998 | 1998 | 1983 | 1978 | 1990 | 1982 | 1992 | 1976 | 1973 | 1981 | 1983 | 1973 | 1983 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.11 | 0.04 | 0.24 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.00 |
| Year Lowest Occurred | 1977 | 1997 | 1996 | 1999 | 1992 | 1974 | 1985 | 1998 | 1999 | 1987 | 1976 | 1989 | 1977 |
| Heating Degree Days (F) | 1295. | 1004. | 849. | 567. | 343. | 172. | 73. | 61. | 236. | 570. | 946. | 1276. | 7392. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 38. | 140. | 135. | 50. | 0. | 0. | 0. | 372. |