| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 47.3 | 52.5 | 60.4 | 69.4 | 78.2 | 87.6 | 91.7 | 89.2 | 81.7 | 71.7 | 57.8 | 48.6 | 69.7 |
| Highest Mean Max. Temperature (F) | 57.7 | 61.3 | 68.8 | 75.9 | 87.0 | 96.0 | 98.9 | 96.9 | 90.6 | 78.0 | 68.2 | 55.0 | 98.9 |
| Year Highest Occurred | 1986 | 1999 | 1972 | 1981 | 1998 | 1990 | 1980 | 2000 | 1998 | 1979 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 33.5 | 37.7 | 54.2 | 59.3 | 72.9 | 80.6 | 86.6 | 83.2 | 73.8 | 64.7 | 46.6 | 36.2 | 33.5 |
| Year Lowest Occurred | 1979 | 1978 | 1998 | 1997 | 1976 | 1989 | 1972 | 1974 | 1974 | 1976 | 1972 | 1983 | 1979 |
| Mean Temperature (F) | 34.1 | 38.5 | 45.7 | 54.4 | 64.0 | 73.7 | 78.4 | 76.5 | 68.7 | 57.6 | 44.2 | 35.7 | 56.0 |
| Highest Mean Temperature (F) | 42.7 | 45.6 | 51.4 | 61.0 | 69.5 | 79.3 | 84.6 | 81.4 | 75.0 | 61.7 | 51.0 | 42.1 | 84.6 |
| Year Highest Occurred | 1986 | 1976 | 1986 | 1981 | 1998 | 1990 | 1980 | 1983 | 1998 | 1979 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 23.3 | 27.5 | 40.9 | 46.8 | 59.3 | 68.0 | 75.0 | 72.2 | 62.2 | 51.5 | 35.9 | 24.0 | 23.3 |
| Year Lowest Occurred | 1979 | 1978 | 1998 | 1997 | 1983 | 1989 | 1972 | 1974 | 1974 | 1976 | 1972 | 1983 | 1979 |
| Mean Min. Temperature (F) | 20.8 | 24.4 | 30.9 | 39.4 | 49.8 | 59.7 | 65.0 | 63.8 | 55.7 | 43.4 | 30.5 | 22.8 | 42.2 |
| Highest Mean Min. Temperature (F) | 27.7 | 30.7 | 36.7 | 46.0 | 54.8 | 63.6 | 70.2 | 67.0 | 59.7 | 48.0 | 37.9 | 29.1 | 70.2 |
| Year Highest Occurred | 1986 | 1987 | 1986 | 1981 | 1977 | 1994 | 1980 | 1983 | 1990 | 2000 | 1981 | 1980 | 1980 |
| Lowest Mean Min. Temperature (F) | 13.1 | 17.3 | 23.7 | 33.0 | 43.3 | 54.3 | 61.9 | 60.6 | 50.7 | 38.4 | 25.1 | 11.8 | 11.8 |
| Year Lowest Occurred | 1979 | 1978 | 1996 | 1983 | 1983 | 1983 | 1995 | 1992 | 1974 | 1976 | 1972 | 1983 | 1983 |
| Mean Precipitation (in.) | 0.47 | 0.58 | 1.13 | 1.31 | 2.74 | 2.41 | 2.42 | 2.47 | 1.95 | 1.11 | 0.66 | 0.50 | 17.75 |
| Highest Precipitation (in.) | 1.15 | 1.79 | 4.54 | 6.11 | 7.61 | 7.00 | 7.14 | 5.29 | 10.90 | 5.19 | 2.13 | 2.83 | 10.90 |
| Year Highest Occurred | 1978 | 1978 | 1973 | 1999 | 1988 | 1992 | 1971 | 1981 | 1996 | 2000 | 1971 | 1991 | 1996 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.31 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1999 | 1997 | 1996 | 1996 | 1998 | 1978 | 2000 | 1998 | 1998 | 1999 | 2000 | 1998 |
| Heating Degree Days (F) | 961. | 743. | 600. | 332. | 114. | 14. | 0. | 1. | 44. | 243. | 624. | 908. | 4584. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 15. | 81. | 274. | 415. | 359. | 155. | 11. | 0. | 0. | 1310. |