| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.9 | 48.5 | 56.9 | 65.0 | 72.7 | 80.6 | 90.2 | 90.9 | 80.3 | 66.4 | 49.3 | 41.0 | 65.2 |
| Highest Mean Max. Temperature (F) | 48.7 | 57.1 | 65.9 | 76.9 | 80.5 | 90.8 | 100.5 | 98.9 | 89.5 | 75.0 | 57.8 | 46.7 | 100.5 |
| Year Highest Occurred | 1990 | 1992 | 1992 | 1987 | 1992 | 1986 | 1985 | 1971 | 1990 | 1988 | 1999 | 1989 | 1985 |
| Lowest Mean Max. Temperature (F) | 28.3 | 41.1 | 50.3 | 54.8 | 65.8 | 75.1 | 77.4 | 84.3 | 71.5 | 60.9 | 40.3 | 33.0 | 28.3 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1996 | 1995 | 1993 | 1993 | 1985 | 1975 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 33.9 | 39.4 | 45.9 | 52.5 | 59.4 | 66.5 | 74.0 | 74.2 | 64.9 | 53.5 | 41.1 | 34.4 | 53.3 |
| Highest Mean Temperature (F) | 41.0 | 46.5 | 52.4 | 59.2 | 64.7 | 74.1 | 82.2 | 80.6 | 71.0 | 60.7 | 48.1 | 40.1 | 82.2 |
| Year Highest Occurred | 1990 | 1992 | 1992 | 1987 | 1992 | 1986 | 1985 | 1971 | 1990 | 1988 | 1999 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 20.7 | 31.0 | 38.1 | 44.2 | 54.3 | 61.6 | 64.8 | 69.2 | 59.5 | 48.9 | 33.7 | 26.4 | 20.7 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1999 | 1999 | 1993 | 1995 | 1986 | 1975 | 1985 | 1978 | 1979 |
| Mean Min. Temperature (F) | 26.9 | 30.3 | 34.9 | 39.9 | 46.0 | 52.3 | 57.7 | 57.4 | 49.5 | 40.5 | 32.9 | 27.8 | 41.3 |
| Highest Mean Min. Temperature (F) | 33.2 | 35.9 | 39.6 | 45.1 | 49.8 | 57.3 | 63.9 | 62.7 | 54.5 | 46.3 | 38.4 | 34.3 | 63.9 |
| Year Highest Occurred | 1990 | 1992 | 1986 | 1990 | 1987 | 1986 | 1985 | 1983 | 1991 | 1988 | 1999 | 1973 | 1985 |
| Lowest Mean Min. Temperature (F) | 13.0 | 20.8 | 25.8 | 33.5 | 40.6 | 47.4 | 48.2 | 52.5 | 45.8 | 36.9 | 26.6 | 19.5 | 13.0 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1999 | 1999 | 1999 | 1995 | 1971 | 1975 | 1975 | 1978 | 1979 |
| Mean Precipitation (in.) | 1.18 | 1.13 | 1.71 | 1.78 | 2.31 | 1.80 | 1.08 | 0.91 | 1.08 | 1.12 | 1.52 | 1.29 | 16.91 |
| Highest Precipitation (in.) | 2.78 | 2.17 | 3.90 | 4.15 | 5.51 | 4.10 | 3.28 | 2.38 | 3.41 | 2.86 | 4.24 | 2.90 | 5.51 |
| Year Highest Occurred | 1976 | 1978 | 1995 | 1978 | 1998 | 1993 | 1978 | 1978 | 1985 | 1975 | 1973 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.25 | 0.23 | 0.55 | 0.49 | 0.77 | 0.56 | 0.02 | 0.03 | 0.00 | 0.00 | 0.45 | 0.05 | 0.00 |
| Year Lowest Occurred | 1992 | 1992 | 1994 | 1973 | 1982 | 2000 | 1984 | 1981 | 1993 | 1987 | 1987 | 1989 | 1993 |
| Heating Degree Days (F) | 964. | 717. | 593. | 388. | 204. | 87. | 18. | 17. | 102. | 363. | 717. | 950. | 5120. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 11. | 29. | 130. | 295. | 301. | 99. | 4. | 0. | 0. | 869. |