| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.1 | 49.7 | 53.6 | 57.3 | 61.8 | 65.5 | 70.2 | 71.7 | 69.4 | 60.4 | 50.9 | 45.7 | 58.5 |
| Highest Mean Max. Temperature (F) | 51.0 | 55.8 | 60.0 | 61.4 | 68.2 | 70.2 | 74.9 | 75.2 | 75.2 | 66.3 | 56.0 | 49.7 | 75.2 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1989 | 1992 | 1992 | 1996 | 1981 | 1974 | 1987 | 1997 | 1979 | 1981 |
| Lowest Mean Max. Temperature (F) | 38.9 | 41.8 | 48.5 | 52.0 | 56.7 | 60.6 | 65.2 | 66.2 | 64.5 | 56.6 | 41.9 | 39.3 | 38.9 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1974 | 1971 | 1986 | 1975 | 1978 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 39.2 | 41.4 | 44.2 | 47.4 | 52.1 | 56.2 | 60.1 | 60.8 | 57.3 | 49.8 | 43.4 | 39.2 | 49.3 |
| Highest Mean Temperature (F) | 44.2 | 46.9 | 48.8 | 50.1 | 56.6 | 59.7 | 62.9 | 64.1 | 61.5 | 53.5 | 48.0 | 42.9 | 64.1 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1989 | 1993 | 1992 | 1990 | 1997 | 1995 | 1988 | 1995 | 1979 | 1997 |
| Lowest Mean Temperature (F) | 31.2 | 33.4 | 39.8 | 42.5 | 48.3 | 52.4 | 57.1 | 56.8 | 53.1 | 47.5 | 35.4 | 33.5 | 31.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1974 | 1971 | 1986 | 1973 | 1972 | 1971 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 32.2 | 33.1 | 34.8 | 37.4 | 42.3 | 46.8 | 49.9 | 49.8 | 45.2 | 39.1 | 35.8 | 32.7 | 39.9 |
| Highest Mean Min. Temperature (F) | 37.3 | 37.9 | 38.3 | 42.0 | 46.8 | 50.7 | 54.8 | 53.1 | 50.7 | 45.4 | 40.8 | 36.9 | 54.8 |
| Year Highest Occurred | 1994 | 1991 | 1984 | 1990 | 1993 | 1998 | 1998 | 1997 | 1995 | 1988 | 1995 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 23.6 | 24.9 | 31.0 | 32.7 | 40.0 | 43.7 | 47.5 | 46.3 | 40.7 | 35.1 | 28.8 | 25.5 | 23.6 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1974 | 1976 | 1977 | 1973 | 1983 | 1974 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 12.05 | 10.75 | 9.25 | 6.31 | 4.03 | 2.84 | 1.45 | 1.47 | 3.24 | 6.82 | 12.67 | 12.76 | 83.64 |
| Highest Precipitation (in.) | 21.76 | 25.51 | 20.85 | 12.24 | 9.12 | 5.76 | 4.82 | 4.17 | 10.15 | 15.98 | 23.15 | 23.91 | 25.51 |
| Year Highest Occurred | 1990 | 1999 | 1997 | 1991 | 1984 | 1981 | 1983 | 1975 | 1997 | 1975 | 1998 | 1998 | 1999 |
| Lowest Precipitation (in.) | 0.66 | 1.14 | 1.78 | 2.92 | 0.87 | 1.18 | 0.14 | 0.00 | 0.00 | 0.24 | 3.25 | 3.43 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1998 | 1992 | 1987 | 1984 | 1998 | 1990 | 1987 | 1976 | 1985 | 1998 |
| Heating Degree Days (F) | 802. | 662. | 644. | 530. | 400. | 267. | 160. | 142. | 239. | 472. | 649. | 801. | 5768. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 7. | 10. | 7. | 0. | 0. | 0. | 24. |