| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.7 | 34.7 | 45.1 | 57.4 | 68.1 | 79.0 | 84.9 | 83.1 | 74.3 | 61.8 | 43.8 | 31.8 | 57.8 |
| Highest Mean Max. Temperature (F) | 46.0 | 43.6 | 53.4 | 65.1 | 74.2 | 87.2 | 88.7 | 87.9 | 81.3 | 68.0 | 56.5 | 48.3 | 88.7 |
| Year Highest Occurred | 1981 | 1981 | 1999 | 1981 | 2000 | 1977 | 1976 | 1983 | 1979 | 1988 | 1999 | 1980 | 1976 |
| Lowest Mean Max. Temperature (F) | 20.2 | 25.8 | 37.2 | 48.5 | 59.7 | 72.2 | 80.1 | 79.4 | 67.7 | 51.9 | 33.3 | 23.4 | 20.2 |
| Year Lowest Occurred | 1973 | 1989 | 1973 | 1973 | 1995 | 1998 | 1986 | 1972 | 1986 | 1984 | 2000 | 1972 | 1973 |
| Mean Temperature (F) | 18.5 | 22.7 | 32.9 | 43.0 | 52.3 | 61.1 | 66.9 | 65.5 | 57.0 | 45.6 | 31.6 | 20.6 | 43.1 |
| Highest Mean Temperature (F) | 30.8 | 31.1 | 39.9 | 48.3 | 56.4 | 66.8 | 69.5 | 70.1 | 61.9 | 49.8 | 39.1 | 34.4 | 70.1 |
| Year Highest Occurred | 1981 | 2000 | 1986 | 1992 | 1994 | 1977 | 1976 | 1983 | 1998 | 1988 | 1999 | 1980 | 1983 |
| Lowest Mean Temperature (F) | 6.2 | 12.2 | 24.3 | 35.2 | 48.0 | 56.1 | 63.3 | 61.5 | 51.2 | 40.2 | 21.5 | 13.2 | 6.2 |
| Year Lowest Occurred | 1973 | 1973 | 1973 | 1973 | 1995 | 1998 | 1993 | 1972 | 1971 | 1984 | 2000 | 1978 | 1973 |
| Mean Min. Temperature (F) | 7.2 | 10.6 | 20.6 | 28.5 | 36.5 | 43.1 | 48.9 | 47.9 | 39.6 | 29.4 | 19.3 | 9.3 | 28.4 |
| Highest Mean Min. Temperature (F) | 17.0 | 20.7 | 26.9 | 32.3 | 40.3 | 48.7 | 52.8 | 52.3 | 45.5 | 32.9 | 24.9 | 20.5 | 52.8 |
| Year Highest Occurred | 2000 | 2000 | 1986 | 2000 | 1992 | 1988 | 1998 | 2000 | 1997 | 1998 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -7.9 | -3.0 | 11.3 | 21.8 | 34.1 | 39.9 | 43.3 | 42.6 | 32.5 | 23.7 | 9.6 | 2.3 | -7.9 |
| Year Lowest Occurred | 1973 | 1973 | 1973 | 1973 | 1983 | 1998 | 1972 | 1974 | 1971 | 1976 | 2000 | 1991 | 1973 |
| Mean Precipitation (in.) | 1.66 | 1.22 | 1.28 | 1.57 | 1.66 | 1.06 | 1.44 | 1.34 | 1.45 | 1.64 | 1.52 | 1.50 | 17.34 |
| Highest Precipitation (in.) | 3.46 | 2.62 | 2.50 | 3.31 | 4.11 | 2.81 | 3.46 | 3.07 | 6.20 | 3.76 | 3.71 | 5.11 | 6.20 |
| Year Highest Occurred | 1996 | 1986 | 1981 | 1985 | 1995 | 1984 | 1992 | 1997 | 1997 | 1981 | 1985 | 1983 | 1997 |
| Lowest Precipitation (in.) | 0.53 | 0.40 | 0.22 | 0.58 | 0.09 | 0.02 | 0.30 | 0.45 | 0.17 | 0.14 | 0.12 | 0.31 | 0.02 |
| Year Lowest Occurred | 1981 | 1982 | 1997 | 1989 | 1974 | 1980 | 1994 | 1971 | 1979 | 1988 | 1976 | 1986 | 1980 |
| Heating Degree Days (F) | 1443. | 1185. | 996. | 661. | 394. | 151. | 34. | 59. | 256. | 602. | 1004. | 1379. | 8164. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 32. | 93. | 74. | 15. | 0. | 0. | 0. | 214. |