| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.0 | 26.6 | 37.1 | 51.2 | 65.4 | 72.8 | 76.4 | 73.9 | 64.9 | 53.8 | 38.3 | 25.7 | 50.6 |
| Highest Mean Max. Temperature (F) | 34.3 | 37.5 | 48.6 | 59.7 | 75.5 | 79.6 | 81.4 | 78.2 | 73.1 | 60.8 | 50.9 | 35.2 | 81.4 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1998 | 1977 | 1988 | 1983 | 1998 | 1998 | 1973 | 1999 | 1994 | 1983 |
| Lowest Mean Max. Temperature (F) | 11.9 | 18.1 | 30.2 | 43.2 | 57.0 | 63.4 | 68.9 | 68.0 | 59.4 | 47.8 | 30.4 | 15.8 | 11.9 |
| Year Lowest Occurred | 1994 | 1979 | 1984 | 1995 | 1983 | 1982 | 1992 | 1994 | 1993 | 1988 | 1995 | 1983 | 1994 |
| Mean Temperature (F) | 12.1 | 16.5 | 26.7 | 39.8 | 52.6 | 60.9 | 65.3 | 63.1 | 54.4 | 43.8 | 30.7 | 17.9 | 40.3 |
| Highest Mean Temperature (F) | 23.8 | 28.3 | 36.3 | 46.2 | 60.7 | 65.8 | 69.9 | 67.5 | 60.3 | 51.5 | 40.0 | 26.2 | 69.9 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1998 | 1977 | 1995 | 1983 | 1995 | 1998 | 1971 | 1999 | 1994 | 1983 |
| Lowest Mean Temperature (F) | 2.8 | 7.5 | 19.9 | 33.3 | 45.2 | 52.3 | 59.2 | 59.1 | 49.7 | 38.3 | 21.8 | 7.3 | 2.8 |
| Year Lowest Occurred | 1994 | 1979 | 1984 | 1975 | 1983 | 1982 | 1992 | 1997 | 1993 | 1988 | 1995 | 1983 | 1994 |
| Mean Min. Temperature (F) | 3.2 | 6.4 | 16.3 | 28.4 | 39.8 | 49.0 | 54.2 | 52.3 | 43.8 | 33.7 | 23.0 | 10.0 | 30.0 |
| Highest Mean Min. Temperature (F) | 13.3 | 19.1 | 24.9 | 34.8 | 46.0 | 54.2 | 58.5 | 59.2 | 47.4 | 42.7 | 29.0 | 18.7 | 59.2 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1986 | 1991 | 1995 | 1999 | 1995 | 1998 | 1971 | 1999 | 1987 | 1995 |
| Lowest Mean Min. Temperature (F) | -7.2 | -3.1 | 9.2 | 21.4 | 33.4 | 41.2 | 49.4 | 47.9 | 39.0 | 26.8 | 13.1 | -1.7 | -7.2 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1983 | 1982 | 1992 | 1982 | 1974 | 1976 | 1995 | 1976 | 1982 |
| Mean Precipitation (in.) | 1.10 | 0.93 | 1.91 | 2.15 | 3.35 | 3.84 | 3.92 | 3.64 | 4.01 | 2.65 | 1.97 | 1.24 | 30.71 |
| Highest Precipitation (in.) | 3.46 | 3.20 | 6.98 | 4.49 | 7.69 | 8.85 | 9.66 | 7.53 | 8.91 | 5.57 | 5.90 | 2.83 | 9.66 |
| Year Highest Occurred | 1971 | 1971 | 1977 | 1993 | 1991 | 1996 | 1999 | 1978 | 1994 | 1995 | 1985 | 1996 | 1999 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.53 | 1.35 | 1.18 | 1.01 | 0.97 | 0.18 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 2000 | 1997 | 1994 | 1997 | 1986 | 1988 | 1998 | 1991 | 1989 | 2000 | 1999 | 1999 | 2000 |
| Heating Degree Days (F) | 1641. | 1359. | 1187. | 756. | 404. | 164. | 74. | 118. | 321. | 660. | 1032. | 1462. | 9178. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 19. | 42. | 84. | 58. | 3. | 0. | 0. | 0. | 206. |