| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.5 | 37.8 | 51.7 | 62.4 | 71.8 | 81.9 | 87.3 | 85.2 | 76.5 | 63.5 | 45.7 | 34.4 | 60.8 |
| Highest Mean Max. Temperature (F) | 43.2 | 48.9 | 60.9 | 70.2 | 77.7 | 87.6 | 90.3 | 88.6 | 83.4 | 71.8 | 53.9 | 44.3 | 90.3 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1992 | 1984 | 1981 | 1988 | 1982 | 1979 | 1988 | 1995 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 18.1 | 25.0 | 41.7 | 54.4 | 63.3 | 74.7 | 83.5 | 81.3 | 72.2 | 58.6 | 36.9 | 25.8 | 18.1 |
| Year Lowest Occurred | 1973 | 1973 | 1973 | 1975 | 1995 | 1998 | 1992 | 1999 | 1999 | 1984 | 1971 | 1972 | 1973 |
| Mean Temperature (F) | 19.7 | 25.3 | 38.1 | 47.2 | 55.7 | 64.7 | 70.6 | 68.9 | 60.3 | 48.7 | 33.8 | 22.9 | 46.3 |
| Highest Mean Temperature (F) | 30.6 | 35.8 | 46.3 | 53.9 | 60.4 | 69.4 | 73.0 | 71.3 | 64.6 | 54.9 | 39.4 | 31.9 | 73.0 |
| Year Highest Occurred | 2000 | 1995 | 1986 | 1992 | 1992 | 1988 | 1989 | 1982 | 1990 | 1988 | 1995 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 5.7 | 11.9 | 30.0 | 40.2 | 50.9 | 59.4 | 66.8 | 65.8 | 56.9 | 44.6 | 27.0 | 14.5 | 5.7 |
| Year Lowest Occurred | 1973 | 1973 | 1984 | 1975 | 1975 | 1998 | 1993 | 1993 | 1971 | 1984 | 2000 | 1972 | 1973 |
| Mean Min. Temperature (F) | 7.8 | 12.8 | 24.5 | 32.0 | 39.5 | 47.5 | 53.8 | 52.5 | 44.1 | 33.8 | 21.9 | 11.4 | 31.8 |
| Highest Mean Min. Temperature (F) | 19.7 | 23.4 | 31.8 | 38.5 | 45.6 | 52.0 | 57.2 | 56.9 | 50.1 | 38.7 | 25.2 | 19.5 | 57.2 |
| Year Highest Occurred | 2000 | 2000 | 1986 | 1990 | 1992 | 1988 | 1998 | 2000 | 1990 | 1972 | 1987 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -6.7 | -1.3 | 16.9 | 26.1 | 34.0 | 44.0 | 49.7 | 48.4 | 39.8 | 30.0 | 16.3 | 2.7 | -6.7 |
| Year Lowest Occurred | 1973 | 1973 | 1984 | 1975 | 1975 | 1975 | 1993 | 1975 | 1971 | 1976 | 2000 | 1990 | 1973 |
| Mean Precipitation (in.) | 0.51 | 0.57 | 0.69 | 0.90 | 1.10 | 0.68 | 1.00 | 1.19 | 1.12 | 0.94 | 0.49 | 0.54 | 9.73 |
| Highest Precipitation (in.) | 1.76 | 1.46 | 1.87 | 3.06 | 3.24 | 2.16 | 2.54 | 4.61 | 3.89 | 3.49 | 1.78 | 2.57 | 4.61 |
| Year Highest Occurred | 1997 | 1990 | 1993 | 1986 | 1987 | 1998 | 1987 | 1999 | 1982 | 1981 | 1983 | 1983 | 1999 |
| Lowest Precipitation (in.) | 0.11 | 0.01 | 0.02 | 0.16 | 0.16 | 0.01 | 0.05 | 0.07 | 0.01 | 0.01 | 0.01 | 0.05 | 0.01 |
| Year Lowest Occurred | 1990 | 1972 | 1971 | 1977 | 1984 | 1994 | 2000 | 1996 | 1987 | 1999 | 1999 | 1989 | 1972 |
| Heating Degree Days (F) | 1405. | 1111. | 835. | 536. | 296. | 95. | 5. | 15. | 158. | 507. | 936. | 1306. | 7205. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 86. | 177. | 134. | 17. | 0. | 0. | 0. | 420. |