| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 48.8 | 53.6 | 61.4 | 69.2 | 77.5 | 86.4 | 90.0 | 87.8 | 81.3 | 71.0 | 58.6 | 49.7 | 69.6 |
| Highest Mean Max. Temperature (F) | 57.8 | 62.4 | 69.1 | 75.4 | 86.1 | 95.9 | 96.1 | 93.8 | 88.2 | 76.3 | 67.4 | 58.1 | 96.1 |
| Year Highest Occurred | 1986 | 1976 | 1972 | 1981 | 1996 | 1990 | 1980 | 2000 | 2000 | 1979 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 38.2 | 41.8 | 57.1 | 59.1 | 74.0 | 80.0 | 85.2 | 83.3 | 74.8 | 63.4 | 49.0 | 38.1 | 38.1 |
| Year Lowest Occurred | 1979 | 1978 | 1990 | 1997 | 1980 | 1989 | 1991 | 1971 | 1974 | 1984 | 1972 | 1983 | 1983 |
| Mean Temperature (F) | 35.0 | 39.4 | 46.2 | 54.1 | 62.8 | 71.9 | 75.9 | 74.2 | 67.1 | 56.1 | 44.3 | 36.1 | 55.3 |
| Highest Mean Temperature (F) | 42.2 | 46.0 | 51.1 | 60.0 | 69.4 | 78.5 | 80.6 | 79.0 | 73.0 | 59.8 | 51.0 | 42.7 | 80.6 |
| Year Highest Occurred | 1986 | 2000 | 1974 | 1981 | 1996 | 1990 | 1980 | 2000 | 1998 | 1991 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 26.1 | 31.0 | 42.5 | 46.9 | 59.7 | 67.4 | 72.4 | 70.4 | 61.5 | 50.3 | 37.0 | 26.4 | 26.1 |
| Year Lowest Occurred | 1979 | 1978 | 1996 | 1997 | 1983 | 1989 | 1975 | 1974 | 1974 | 1976 | 1972 | 1983 | 1979 |
| Mean Min. Temperature (F) | 21.1 | 25.1 | 31.0 | 38.9 | 48.1 | 57.3 | 61.7 | 60.5 | 52.8 | 41.1 | 29.9 | 22.4 | 40.8 |
| Highest Mean Min. Temperature (F) | 26.6 | 29.8 | 35.3 | 44.5 | 52.7 | 61.0 | 65.0 | 64.1 | 57.9 | 45.1 | 34.5 | 27.3 | 65.0 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1981 | 1996 | 1990 | 1980 | 2000 | 1998 | 1998 | 1999 | 1980 | 1980 |
| Lowest Mean Min. Temperature (F) | 13.9 | 19.4 | 26.6 | 33.9 | 44.4 | 53.5 | 59.5 | 56.6 | 48.1 | 35.0 | 24.0 | 14.6 | 13.9 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1973 | 1983 | 1983 | 1976 | 1974 | 1974 | 1976 | 1976 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.42 | 0.45 | 0.68 | 0.78 | 2.48 | 2.12 | 2.76 | 2.45 | 1.64 | 1.29 | 0.57 | 0.38 | 16.02 |
| Highest Precipitation (in.) | 1.68 | 2.31 | 2.00 | 4.40 | 5.58 | 5.79 | 6.54 | 6.89 | 4.81 | 5.13 | 2.28 | 1.60 | 6.89 |
| Year Highest Occurred | 1990 | 1990 | 2000 | 1997 | 1986 | 1989 | 1991 | 1987 | 1991 | 2000 | 1986 | 1997 | 1987 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.02 | 0.00 | 0.38 | 0.06 | 0.07 | 0.73 | 0.17 | 0.00 | 0.00 | 0.01 | 0.00 |
| Year Lowest Occurred | 1998 | 2000 | 1996 | 1996 | 1998 | 1990 | 1987 | 1985 | 2000 | 1975 | 1989 | 1976 | 1998 |
| Heating Degree Days (F) | 932. | 718. | 582. | 340. | 125. | 17. | 0. | 3. | 58. | 282. | 622. | 897. | 4576. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 10. | 58. | 223. | 336. | 286. | 119. | 5. | 0. | 0. | 1037. |