| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 26.5 | 30.4 | 39.9 | 52.1 | 64.9 | 74.6 | 79.6 | 77.6 | 69.8 | 57.4 | 43.5 | 31.3 | 54.0 |
| Highest Mean Max. Temperature (F) | 36.6 | 38.4 | 48.0 | 58.3 | 73.0 | 82.4 | 84.1 | 82.5 | 76.3 | 63.5 | 53.4 | 38.9 | 84.1 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1999 | 1983 | 1998 | 1971 | 1999 | 1979 | 1999 |
| Lowest Mean Max. Temperature (F) | 15.1 | 22.1 | 33.8 | 46.0 | 57.1 | 69.3 | 73.3 | 73.2 | 64.2 | 53.7 | 36.1 | 20.7 | 15.1 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1992 | 1997 | 1992 | 1992 | 1994 | 1993 | 1988 | 1996 | 1989 | 1977 |
| Mean Temperature (F) | 18.7 | 22.9 | 32.2 | 43.1 | 54.6 | 64.1 | 69.9 | 68.5 | 60.7 | 49.1 | 36.4 | 24.0 | 45.4 |
| Highest Mean Temperature (F) | 28.9 | 33.6 | 39.7 | 48.6 | 60.9 | 69.4 | 74.3 | 73.6 | 66.2 | 55.9 | 42.7 | 31.7 | 74.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1998 | 1988 | 1999 | 1995 | 1998 | 1971 | 1999 | 1982 | 1999 |
| Lowest Mean Temperature (F) | 6.4 | 13.2 | 25.8 | 38.8 | 48.4 | 59.0 | 65.0 | 64.3 | 56.0 | 45.0 | 29.5 | 12.0 | 6.4 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1976 | 1976 | 2000 | 1977 |
| Mean Min. Temperature (F) | 10.8 | 15.3 | 24.4 | 34.1 | 44.3 | 53.6 | 60.1 | 59.3 | 51.6 | 40.8 | 29.2 | 16.7 | 36.7 |
| Highest Mean Min. Temperature (F) | 21.2 | 28.8 | 32.0 | 40.5 | 50.9 | 58.8 | 64.4 | 66.7 | 56.0 | 48.2 | 34.5 | 25.4 | 66.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1998 | 1995 | 1999 | 1995 | 1998 | 1971 | 1998 | 1997 | 1995 |
| Lowest Mean Min. Temperature (F) | -2.4 | 4.2 | 17.8 | 29.3 | 39.7 | 47.3 | 56.3 | 54.4 | 46.3 | 36.0 | 21.0 | 1.5 | -2.4 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1982 | 1997 | 1982 | 1978 | 1977 | 1974 | 1976 | 1976 | 2000 | 1977 |
| Mean Precipitation (in.) | 1.83 | 1.24 | 1.94 | 2.85 | 2.79 | 3.26 | 3.44 | 3.73 | 3.10 | 2.25 | 2.30 | 1.76 | 30.49 |
| Highest Precipitation (in.) | 10.24 | 2.79 | 5.19 | 7.65 | 6.47 | 8.53 | 8.12 | 9.48 | 12.56 | 5.57 | 6.20 | 4.10 | 12.56 |
| Year Highest Occurred | 2000 | 1971 | 1977 | 1993 | 1973 | 1996 | 1991 | 1975 | 1986 | 1991 | 1985 | 1971 | 1986 |
| Lowest Precipitation (in.) | 0.06 | 0.26 | 0.12 | 0.53 | 0.60 | 0.80 | 1.46 | 0.76 | 0.16 | 0.16 | 0.10 | 0.10 | 0.06 |
| Year Lowest Occurred | 1981 | 1995 | 1999 | 1971 | 1981 | 1989 | 1979 | 1976 | 1979 | 1975 | 1996 | 1993 | 1981 |
| Heating Degree Days (F) | 1438. | 1180. | 1019. | 657. | 339. | 101. | 16. | 32. | 158. | 493. | 859. | 1271. | 7563. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 17. | 74. | 166. | 138. | 29. | 1. | 0. | 0. | 425. |