| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.8 | 43.9 | 50.8 | 59.1 | 68.2 | 79.7 | 85.9 | 83.2 | 75.3 | 63.7 | 48.5 | 41.0 | 61.6 |
| Highest Mean Max. Temperature (F) | 53.0 | 52.4 | 59.7 | 67.4 | 75.0 | 85.1 | 89.6 | 88.3 | 81.5 | 68.3 | 60.3 | 52.4 | 89.6 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1981 | 1974 | 1990 | 1978 | 1995 | 1998 | 1975 | 1999 | 1980 | 1978 |
| Lowest Mean Max. Temperature (F) | 27.1 | 33.8 | 43.0 | 50.1 | 59.3 | 72.5 | 80.7 | 78.5 | 70.9 | 54.0 | 36.9 | 27.3 | 27.1 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1983 | 1995 | 1982 | 1992 | 1993 | 1973 | 1984 | 1972 | 1983 | 1979 |
| Mean Temperature (F) | 26.7 | 31.0 | 37.3 | 45.2 | 54.5 | 64.8 | 70.6 | 68.8 | 60.3 | 48.5 | 35.1 | 28.0 | 47.6 |
| Highest Mean Temperature (F) | 37.5 | 37.4 | 44.0 | 52.0 | 58.4 | 69.5 | 73.5 | 72.7 | 65.9 | 51.2 | 43.7 | 37.4 | 73.5 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1981 | 1977 | 1994 | 1980 | 1983 | 1998 | 1988 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 15.4 | 21.5 | 32.6 | 39.0 | 49.1 | 59.7 | 67.6 | 65.7 | 56.0 | 42.6 | 27.4 | 17.0 | 15.4 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1983 | 1995 | 1982 | 1992 | 1993 | 1971 | 1984 | 1972 | 1983 | 1979 |
| Mean Min. Temperature (F) | 13.5 | 18.1 | 23.8 | 31.2 | 40.8 | 49.9 | 55.2 | 54.4 | 45.2 | 33.3 | 21.7 | 14.9 | 33.5 |
| Highest Mean Min. Temperature (F) | 22.1 | 26.2 | 28.6 | 36.5 | 44.9 | 53.9 | 57.5 | 57.8 | 50.3 | 35.8 | 28.5 | 22.3 | 57.8 |
| Year Highest Occurred | 1986 | 1992 | 1992 | 1981 | 1987 | 1994 | 1980 | 1982 | 1998 | 1998 | 1998 | 1980 | 1982 |
| Lowest Mean Min. Temperature (F) | 3.8 | 9.2 | 18.3 | 26.0 | 38.2 | 46.5 | 52.6 | 50.7 | 40.2 | 29.4 | 15.8 | 6.6 | 3.8 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1982 | 1983 | 1998 | 1994 | 1978 | 1974 | 1976 | 1979 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.40 | 0.35 | 0.93 | 1.15 | 2.24 | 1.86 | 2.65 | 2.62 | 0.70 | 0.75 | 0.61 | 0.33 | 14.59 |
| Highest Precipitation (in.) | 1.04 | 1.75 | 2.71 | 2.80 | 7.45 | 4.17 | 5.05 | 6.02 | 2.15 | 2.66 | 2.74 | 0.95 | 7.45 |
| Year Highest Occurred | 1990 | 1984 | 1981 | 1980 | 1987 | 1982 | 1973 | 1991 | 1990 | 1984 | 1983 | 1983 | 1987 |
| Lowest Precipitation (in.) | 0.02 | 0.01 | 0.10 | 0.22 | 0.23 | 0.55 | 0.50 | 0.55 | 0.03 | 0.00 | 0.01 | 0.00 | 0.00 |
| Year Lowest Occurred | 1981 | 1977 | 1986 | 1981 | 1976 | 1976 | 1978 | 1988 | 1992 | 1980 | 1989 | 1977 | 1980 |
| Heating Degree Days (F) | 1190. | 952. | 858. | 596. | 331. | 86. | 6. | 25. | 174. | 512. | 897. | 1149. | 6776. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 5. | 80. | 178. | 142. | 32. | 0. | 0. | 0. | 437. |