| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.8 | 37.9 | 43.3 | 51.8 | 60.9 | 71.5 | 74.2 | 71.5 | 65.9 | 55.7 | 42.2 | 35.7 | 53.8 |
| Highest Mean Max. Temperature (F) | 44.0 | 43.9 | 50.8 | 59.8 | 70.2 | 76.4 | 79.0 | 75.9 | 72.2 | 61.3 | 52.1 | 44.4 | 79.0 |
| Year Highest Occurred | 1986 | 1996 | 1999 | 1989 | 1996 | 1990 | 1980 | 2000 | 2000 | 1999 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 28.0 | 33.6 | 38.3 | 44.0 | 56.4 | 67.7 | 69.6 | 67.1 | 62.4 | 45.1 | 34.2 | 31.1 | 28.0 |
| Year Lowest Occurred | 1979 | 1998 | 1973 | 1973 | 1980 | 1995 | 1999 | 1991 | 1991 | 1984 | 1972 | 1990 | 1979 |
| Mean Temperature (F) | 21.0 | 24.5 | 30.4 | 37.3 | 44.9 | 53.2 | 57.9 | 56.6 | 50.4 | 40.5 | 28.9 | 22.1 | 39.0 |
| Highest Mean Temperature (F) | 28.5 | 30.9 | 35.3 | 43.2 | 50.8 | 56.8 | 60.4 | 59.7 | 54.8 | 43.6 | 35.0 | 29.5 | 60.4 |
| Year Highest Occurred | 1986 | 1996 | 1972 | 1989 | 1996 | 1996 | 1996 | 1994 | 1998 | 1988 | 1995 | 1980 | 1996 |
| Lowest Mean Temperature (F) | 15.0 | 20.1 | 25.5 | 31.2 | 41.8 | 49.9 | 55.4 | 53.6 | 47.7 | 35.2 | 23.0 | 17.5 | 15.0 |
| Year Lowest Occurred | 1979 | 1974 | 1977 | 1983 | 1971 | 1975 | 1999 | 1991 | 1971 | 1984 | 1972 | 1974 | 1979 |
| Mean Min. Temperature (F) | 7.1 | 11.0 | 17.4 | 22.7 | 28.8 | 34.9 | 41.6 | 41.6 | 34.9 | 25.2 | 15.5 | 8.5 | 24.1 |
| Highest Mean Min. Temperature (F) | 14.8 | 17.9 | 23.3 | 26.5 | 33.1 | 38.4 | 45.5 | 45.0 | 39.9 | 32.4 | 20.7 | 14.6 | 45.5 |
| Year Highest Occurred | 1999 | 1986 | 1974 | 1989 | 1992 | 2000 | 1998 | 1983 | 1997 | 1972 | 1978 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 2.0 | 4.7 | 11.5 | 18.3 | 25.4 | 30.1 | 38.0 | 38.6 | 31.3 | 21.3 | 9.5 | 1.9 | 1.9 |
| Year Lowest Occurred | 1979 | 1974 | 1977 | 1983 | 1971 | 1999 | 1995 | 1978 | 1973 | 1980 | 1979 | 1976 | 1976 |
| Mean Precipitation (in.) | 2.03 | 1.57 | 2.13 | 1.37 | 1.40 | 1.21 | 3.17 | 3.85 | 2.12 | 1.98 | 1.82 | 1.52 | 24.17 |
| Highest Precipitation (in.) | 4.85 | 3.49 | 6.33 | 3.49 | 3.89 | 4.45 | 7.08 | 9.85 | 4.35 | 5.69 | 5.28 | 4.24 | 9.85 |
| Year Highest Occurred | 1993 | 1975 | 1973 | 1986 | 1992 | 1988 | 1990 | 1999 | 1991 | 1972 | 1978 | 1983 | 1999 |
| Lowest Precipitation (in.) | 0.02 | 0.19 | 0.05 | 0.00 | 0.00 | 0.07 | 0.58 | 1.64 | 0.41 | 0.00 | 0.18 | 0.20 | 0.00 |
| Year Lowest Occurred | 1999 | 1972 | 1997 | 1989 | 1996 | 1994 | 1993 | 1985 | 2000 | 1995 | 1999 | 1981 | 1989 |
| Heating Degree Days (F) | 1366. | 1135. | 1073. | 833. | 625. | 355. | 220. | 263. | 438. | 761. | 1085. | 1329. | 9483. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |