| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 43.6 | 47.1 | 52.3 | 57.4 | 63.9 | 70.1 | 77.6 | 78.5 | 73.4 | 62.1 | 49.3 | 43.8 | 59.9 |
| Highest Mean Max. Temperature (F) | 48.0 | 53.2 | 61.0 | 64.8 | 74.1 | 76.4 | 85.0 | 83.6 | 80.8 | 71.5 | 54.6 | 47.2 | 85.0 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1992 | 1985 | 1986 | 1974 | 1987 | 1976 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 38.1 | 41.6 | 46.5 | 51.1 | 57.1 | 63.5 | 68.9 | 72.3 | 65.3 | 55.8 | 41.0 | 37.2 | 37.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1983 | 1976 | 1978 | 1984 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 38.6 | 40.7 | 44.1 | 48.1 | 53.6 | 59.3 | 65.0 | 65.8 | 61.5 | 53.1 | 43.8 | 39.1 | 51.1 |
| Highest Mean Temperature (F) | 42.7 | 46.1 | 50.2 | 53.0 | 60.4 | 64.0 | 69.6 | 69.5 | 66.0 | 59.5 | 48.5 | 42.8 | 69.6 |
| Year Highest Occurred | 1986 | 1992 | 1992 | 1989 | 1992 | 1992 | 1985 | 1997 | 1998 | 1988 | 1997 | 1979 | 1985 |
| Lowest Mean Temperature (F) | 32.3 | 34.1 | 38.8 | 42.7 | 48.9 | 55.1 | 60.1 | 61.6 | 56.7 | 49.1 | 35.9 | 32.4 | 32.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1983 | 1980 | 1985 | 1971 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 33.5 | 34.2 | 35.8 | 38.7 | 43.3 | 48.4 | 52.3 | 53.0 | 49.6 | 44.0 | 38.2 | 34.3 | 42.1 |
| Highest Mean Min. Temperature (F) | 37.5 | 39.1 | 39.8 | 42.9 | 47.3 | 51.5 | 56.3 | 56.2 | 53.0 | 50.0 | 42.5 | 38.3 | 56.3 |
| Year Highest Occurred | 1978 | 1992 | 1986 | 1992 | 1993 | 1992 | 1998 | 1977 | 1995 | 1988 | 1997 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | 26.5 | 26.5 | 31.1 | 34.3 | 40.3 | 45.2 | 49.8 | 48.9 | 45.7 | 40.7 | 30.8 | 27.5 | 26.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1975 | 1976 | 1986 | 1973 | 1972 | 1971 | 1985 | 1990 | 1989 |
| Mean Precipitation (in.) | 12.46 | 11.00 | 9.45 | 7.31 | 5.56 | 3.51 | 1.04 | 1.35 | 3.28 | 6.41 | 14.08 | 14.17 | 89.62 |
| Highest Precipitation (in.) | 20.88 | 21.17 | 15.90 | 14.47 | 10.62 | 9.35 | 5.03 | 4.66 | 8.88 | 13.87 | 29.01 | 33.13 | 33.13 |
| Year Highest Occurred | 1974 | 1996 | 1997 | 1993 | 1984 | 1984 | 1983 | 1978 | 1986 | 1997 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.43 | 2.47 | 2.38 | 3.06 | 0.99 | 1.14 | 0.02 | 0.00 | 0.00 | 0.09 | 2.86 | 3.56 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1999 | 1992 | 1987 | 1973 | 1988 | 1993 | 1987 | 1976 | 1976 | 1988 |
| Heating Degree Days (F) | 820. | 683. | 651. | 508. | 357. | 191. | 87. | 66. | 154. | 373. | 638. | 805. | 5333. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 19. | 85. | 90. | 48. | 2. | 0. | 0. | 248. |