| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 35.2 | 41.0 | 52.7 | 65.0 | 75.5 | 84.5 | 87.8 | 85.6 | 79.3 | 67.6 | 52.5 | 39.9 | 63.9 |
| Highest Mean Max. Temperature (F) | 47.6 | 51.2 | 59.0 | 71.0 | 83.6 | 90.5 | 93.4 | 92.2 | 85.4 | 73.0 | 60.7 | 49.2 | 93.4 |
| Year Highest Occurred | 1990 | 1976 | 1976 | 1977 | 1987 | 1988 | 1980 | 1983 | 1998 | 1971 | 1999 | 1984 | 1980 |
| Lowest Mean Max. Temperature (F) | 21.3 | 28.8 | 42.3 | 58.3 | 69.6 | 78.9 | 83.4 | 80.9 | 72.5 | 61.2 | 44.6 | 26.8 | 21.3 |
| Year Lowest Occurred | 1977 | 1978 | 1984 | 1983 | 1981 | 1982 | 1971 | 1992 | 1974 | 1976 | 1996 | 1983 | 1977 |
| Mean Temperature (F) | 26.9 | 32.3 | 42.8 | 53.8 | 63.9 | 72.8 | 76.4 | 74.5 | 67.6 | 56.3 | 43.5 | 31.8 | 53.6 |
| Highest Mean Temperature (F) | 38.7 | 41.7 | 49.5 | 59.0 | 70.2 | 76.6 | 80.7 | 79.8 | 73.1 | 62.4 | 49.7 | 40.2 | 80.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1984 | 1980 | 1983 | 1998 | 1971 | 1999 | 1982 | 1980 |
| Lowest Mean Temperature (F) | 12.6 | 19.0 | 34.2 | 48.6 | 58.8 | 67.4 | 72.8 | 69.4 | 61.1 | 50.1 | 35.7 | 19.1 | 12.6 |
| Year Lowest Occurred | 1977 | 1978 | 1984 | 1982 | 1997 | 1982 | 1971 | 1992 | 1974 | 1976 | 1976 | 2000 | 1977 |
| Mean Min. Temperature (F) | 18.6 | 23.5 | 32.8 | 42.5 | 52.3 | 61.0 | 65.0 | 63.3 | 55.9 | 44.9 | 34.4 | 23.7 | 43.2 |
| Highest Mean Min. Temperature (F) | 29.7 | 34.3 | 40.5 | 47.8 | 59.4 | 64.6 | 69.2 | 68.4 | 61.7 | 51.8 | 38.9 | 32.7 | 69.2 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1991 | 1991 | 1984 | 1999 | 1995 | 1973 | 1984 | 1994 | 1982 | 1999 |
| Lowest Mean Min. Temperature (F) | 3.8 | 9.2 | 25.8 | 37.1 | 47.1 | 55.9 | 61.7 | 57.8 | 49.8 | 38.5 | 24.3 | 10.0 | 3.8 |
| Year Lowest Occurred | 1977 | 1978 | 1996 | 1982 | 1976 | 1982 | 1975 | 1992 | 1974 | 1988 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 2.20 | 2.40 | 3.35 | 3.98 | 4.23 | 3.94 | 4.65 | 3.46 | 3.17 | 3.25 | 3.87 | 3.23 | 41.73 |
| Highest Precipitation (in.) | 5.49 | 5.46 | 7.43 | 8.62 | 10.45 | 10.42 | 10.10 | 10.41 | 8.60 | 8.39 | 11.57 | 8.33 | 11.57 |
| Year Highest Occurred | 1975 | 1990 | 1973 | 1994 | 1974 | 2000 | 1987 | 1981 | 1989 | 1983 | 1985 | 1990 | 1985 |
| Lowest Precipitation (in.) | 0.00 | 0.62 | 1.09 | 0.22 | 0.81 | 0.70 | 1.26 | 0.52 | 0.12 | 0.80 | 0.60 | 0.37 | 0.00 |
| Year Lowest Occurred | 1986 | 1987 | 1972 | 1971 | 1992 | 1992 | 1999 | 1984 | 1979 | 1987 | 1976 | 1976 | 1986 |
| Heating Degree Days (F) | 1182. | 918. | 690. | 345. | 134. | 8. | 0. | 7. | 57. | 294. | 646. | 1029. | 5310. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 7. | 100. | 241. | 354. | 300. | 135. | 22. | 0. | 0. | 1159. |