| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 35.1 | 41.4 | 51.1 | 62.8 | 71.8 | 79.3 | 86.6 | 85.8 | 75.4 | 64.3 | 46.6 | 37.3 | 61.5 |
| Highest Mean Max. Temperature (F) | 49.9 | 54.8 | 60.6 | 71.9 | 78.4 | 89.4 | 94.5 | 93.3 | 85.0 | 70.0 | 58.0 | 50.3 | 94.5 |
| Year Highest Occurred | 1992 | 1977 | 1992 | 1987 | 1988 | 1988 | 1985 | 1971 | 1990 | 1974 | 1999 | 1999 | 1985 |
| Lowest Mean Max. Temperature (F) | 17.9 | 22.9 | 39.6 | 48.2 | 63.6 | 73.7 | 75.2 | 77.9 | 63.1 | 57.8 | 25.9 | 12.5 | 12.5 |
| Year Lowest Occurred | 1978 | 1989 | 1996 | 1975 | 1996 | 1976 | 1993 | 1974 | 1985 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 22.6 | 28.1 | 37.2 | 47.4 | 56.6 | 64.1 | 69.6 | 68.8 | 58.6 | 48.4 | 33.9 | 25.3 | 46.7 |
| Highest Mean Temperature (F) | 37.2 | 41.3 | 46.3 | 53.5 | 61.6 | 73.0 | 75.1 | 74.0 | 66.6 | 51.3 | 43.7 | 39.1 | 75.1 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1988 | 1988 | 1985 | 1998 | 1998 | 1999 | 1999 | 1999 | 1985 |
| Lowest Mean Temperature (F) | 6.2 | 12.3 | 28.8 | 35.4 | 50.9 | 60.1 | 62.8 | 62.8 | 52.1 | 43.5 | 15.4 | 1.3 | 1.3 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1975 | 1974 | 1981 | 1993 | 1974 | 1985 | 1984 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 10.1 | 14.7 | 23.3 | 32.0 | 41.3 | 48.8 | 52.6 | 51.7 | 41.7 | 32.4 | 21.2 | 13.2 | 31.9 |
| Highest Mean Min. Temperature (F) | 25.6 | 28.3 | 32.2 | 36.2 | 44.7 | 56.5 | 57.2 | 56.5 | 49.4 | 37.4 | 31.0 | 27.9 | 57.2 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1980 | 1988 | 1988 | 1998 | 1998 | 1998 | 1999 | 1998 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | -6.5 | 1.7 | 17.8 | 22.6 | 36.3 | 45.1 | 48.6 | 46.6 | 37.2 | 26.2 | 4.8 | -9.9 | -9.9 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1975 | 1974 | 1981 | 1972 | 1977 | 1972 | 1972 | 1985 | 1983 | 1983 |
| Mean Precipitation (in.) | 0.55 | 0.39 | 0.85 | 1.21 | 2.30 | 2.45 | 1.33 | 1.52 | 1.23 | 0.80 | 0.54 | 0.52 | 13.69 |
| Highest Precipitation (in.) | 1.20 | 0.98 | 3.32 | 3.25 | 6.83 | 7.07 | 6.48 | 4.85 | 3.46 | 2.22 | 1.45 | 1.86 | 7.07 |
| Year Highest Occurred | 1978 | 1980 | 1981 | 1975 | 1981 | 1975 | 1993 | 1985 | 1978 | 1975 | 1978 | 1977 | 1975 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.05 | 0.05 | 0.75 | 0.22 | 0.01 | 0.05 | 0.11 | 0.03 | 0.01 | 0.02 | 0.00 |
| Year Lowest Occurred | 1995 | 1990 | 1994 | 1981 | 1973 | 1985 | 1984 | 1988 | 1976 | 1987 | 1999 | 1991 | 1995 |
| Heating Degree Days (F) | 1315. | 1042. | 862. | 532. | 274. | 102. | 33. | 64. | 235. | 517. | 934. | 1233. | 7143. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 3. | 12. | 73. | 175. | 180. | 42. | 0. | 0. | 0. | 485. |