| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.9 | 36.8 | 48.6 | 58.6 | 68.2 | 79.0 | 88.3 | 87.1 | 76.2 | 63.1 | 45.4 | 33.3 | 59.6 |
| Highest Mean Max. Temperature (F) | 39.8 | 46.6 | 57.7 | 67.3 | 75.3 | 86.0 | 92.4 | 92.3 | 83.6 | 71.9 | 56.8 | 42.6 | 92.4 |
| Year Highest Occurred | 1999 | 1995 | 1992 | 1992 | 1992 | 1977 | 1989 | 1981 | 1979 | 1988 | 1999 | 1995 | 1989 |
| Lowest Mean Max. Temperature (F) | 21.7 | 26.3 | 35.3 | 49.7 | 62.5 | 70.7 | 77.8 | 82.2 | 69.3 | 54.2 | 36.1 | 22.2 | 21.7 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1995 | 1998 | 1993 | 1993 | 1986 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 21.8 | 26.8 | 37.6 | 46.2 | 55.0 | 63.8 | 71.6 | 70.3 | 60.2 | 48.3 | 34.8 | 23.9 | 46.7 |
| Highest Mean Temperature (F) | 31.2 | 35.9 | 44.8 | 52.2 | 59.7 | 70.0 | 74.7 | 73.6 | 65.7 | 53.9 | 40.9 | 33.4 | 74.7 |
| Year Highest Occurred | 2000 | 1986 | 1986 | 1992 | 1992 | 1977 | 1989 | 1971 | 1990 | 1988 | 1999 | 1995 | 1989 |
| Lowest Mean Temperature (F) | 10.2 | 13.3 | 23.7 | 40.0 | 49.7 | 58.2 | 62.2 | 66.0 | 55.2 | 42.5 | 27.6 | 14.0 | 10.2 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1998 | 1993 | 1993 | 1986 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 12.7 | 16.8 | 26.5 | 33.8 | 41.8 | 48.6 | 54.9 | 53.4 | 44.2 | 33.5 | 24.2 | 14.4 | 33.7 |
| Highest Mean Min. Temperature (F) | 23.7 | 28.1 | 32.6 | 38.1 | 46.3 | 54.0 | 59.0 | 60.6 | 49.5 | 39.3 | 29.2 | 25.2 | 60.6 |
| Year Highest Occurred | 1983 | 1986 | 1986 | 1990 | 1984 | 1977 | 1975 | 1983 | 1983 | 1983 | 1998 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | -1.4 | 0.3 | 12.1 | 30.3 | 36.9 | 44.1 | 46.6 | 48.0 | 40.7 | 29.5 | 15.2 | 3.5 | -1.4 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1980 | 1993 | 1985 | 1975 | 1999 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.34 | 1.42 | 1.86 | 1.98 | 2.11 | 1.26 | 0.89 | 0.93 | 1.55 | 1.78 | 1.38 | 1.36 | 17.86 |
| Highest Precipitation (in.) | 3.74 | 3.60 | 3.74 | 5.16 | 4.34 | 3.84 | 2.20 | 4.76 | 5.38 | 4.09 | 4.49 | 4.71 | 5.38 |
| Year Highest Occurred | 1997 | 1986 | 1995 | 1986 | 1987 | 1998 | 1993 | 1977 | 1973 | 1981 | 1985 | 1983 | 1973 |
| Lowest Precipitation (in.) | 0.18 | 0.15 | 0.45 | 0.19 | 0.18 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.02 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1979 | 1977 | 1972 | 1996 | 1988 | 1985 | 1974 | 1988 | 1976 | 1986 | 1996 |
| Heating Degree Days (F) | 1339. | 1071. | 851. | 565. | 318. | 114. | 18. | 17. | 181. | 519. | 906. | 1275. | 7174. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 8. | 77. | 222. | 179. | 36. | 0. | 0. | 0. | 522. |