| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.0 | 37.4 | 43.6 | 53.5 | 63.0 | 70.3 | 76.6 | 76.8 | 66.9 | 56.7 | 41.6 | 33.9 | 54.4 |
| Highest Mean Max. Temperature (F) | 47.2 | 48.3 | 56.1 | 61.2 | 68.5 | 75.9 | 83.9 | 84.6 | 78.0 | 63.3 | 53.2 | 43.7 | 84.6 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1998 | 1988 | 1985 | 1971 | 1994 | 1974 | 1976 | 1999 | 1971 |
| Lowest Mean Max. Temperature (F) | 18.7 | 19.4 | 35.9 | 41.8 | 53.6 | 65.6 | 64.8 | 69.2 | 54.3 | 48.4 | 20.8 | 18.5 | 18.5 |
| Year Lowest Occurred | 1982 | 1975 | 1975 | 1975 | 1996 | 1993 | 1993 | 1980 | 1985 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 21.0 | 25.2 | 31.6 | 40.6 | 49.1 | 55.9 | 60.8 | 60.5 | 51.7 | 43.5 | 30.5 | 22.7 | 41.1 |
| Highest Mean Temperature (F) | 36.5 | 36.9 | 40.7 | 47.5 | 53.2 | 61.0 | 64.7 | 65.4 | 58.6 | 47.9 | 39.8 | 33.7 | 65.4 |
| Year Highest Occurred | 1986 | 1977 | 1986 | 1987 | 1993 | 1988 | 1985 | 1971 | 1994 | 1998 | 1987 | 1999 | 1971 |
| Lowest Mean Temperature (F) | 4.8 | 7.6 | 23.5 | 30.3 | 43.3 | 52.3 | 53.9 | 54.4 | 43.7 | 36.5 | 11.2 | 4.8 | 4.8 |
| Year Lowest Occurred | 1982 | 1975 | 1996 | 1975 | 1996 | 1981 | 1993 | 1980 | 1985 | 1984 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 9.0 | 13.0 | 19.6 | 27.6 | 35.1 | 41.4 | 44.9 | 44.1 | 36.5 | 30.2 | 19.4 | 11.5 | 27.7 |
| Highest Mean Min. Temperature (F) | 27.0 | 27.9 | 28.5 | 33.8 | 39.3 | 46.0 | 48.2 | 47.4 | 42.3 | 33.7 | 28.2 | 23.7 | 48.2 |
| Year Highest Occurred | 1986 | 1977 | 1986 | 1987 | 1993 | 1988 | 1975 | 1990 | 1998 | 1978 | 1987 | 1999 | 1975 |
| Lowest Mean Min. Temperature (F) | -9.1 | -4.2 | 10.7 | 18.7 | 29.7 | 38.4 | 40.4 | 39.6 | 31.4 | 24.5 | 1.5 | -8.8 | -9.1 |
| Year Lowest Occurred | 1982 | 1975 | 1996 | 1975 | 1999 | 1984 | 1999 | 1980 | 1972 | 1984 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.64 | 0.58 | 0.88 | 1.24 | 2.94 | 3.02 | 2.03 | 2.08 | 1.72 | 0.93 | 0.88 | 0.80 | 17.74 |
| Highest Precipitation (in.) | 1.98 | 2.03 | 1.57 | 2.40 | 7.51 | 8.32 | 9.22 | 5.15 | 6.10 | 2.66 | 2.79 | 3.50 | 9.22 |
| Year Highest Occurred | 1972 | 1986 | 1982 | 1975 | 1995 | 1995 | 1993 | 1977 | 1985 | 1994 | 1990 | 1998 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.04 | 0.00 | 0.13 | 0.42 | 1.03 | 0.17 | 0.30 | 0.00 | 0.04 | 0.00 | 0.14 | 0.00 |
| Year Lowest Occurred | 1995 | 1998 | 1999 | 1987 | 2000 | 1977 | 1982 | 1996 | 1998 | 2000 | 1972 | 1991 | 1995 |
| Heating Degree Days (F) | 1365. | 1115. | 1036. | 733. | 495. | 281. | 160. | 177. | 411. | 668. | 1036. | 1310. | 8787. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 6. | 28. | 36. | 12. | 0. | 0. | 0. | 82. |