| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.4 | 45.3 | 51.9 | 60.4 | 70.2 | 81.5 | 85.7 | 82.6 | 76.2 | 65.5 | 51.0 | 42.4 | 62.8 |
| Highest Mean Max. Temperature (F) | 51.2 | 53.4 | 60.9 | 69.1 | 78.5 | 85.8 | 89.9 | 86.7 | 81.6 | 72.0 | 63.7 | 51.8 | 89.9 |
| Year Highest Occurred | 1981 | 1995 | 1972 | 1989 | 1996 | 1980 | 1980 | 1994 | 1998 | 1999 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 32.0 | 41.2 | 44.7 | 53.5 | 65.3 | 76.1 | 81.1 | 79.4 | 70.6 | 54.3 | 42.3 | 35.7 | 32.0 |
| Year Lowest Occurred | 1979 | 1975 | 1973 | 1973 | 1978 | 1991 | 1986 | 1999 | 1986 | 1984 | 1972 | 1978 | 1979 |
| Mean Temperature (F) | 23.4 | 29.2 | 36.6 | 43.0 | 51.8 | 60.8 | 66.9 | 65.3 | 57.6 | 46.7 | 34.7 | 26.4 | 45.2 |
| Highest Mean Temperature (F) | 30.4 | 36.8 | 40.5 | 49.0 | 55.7 | 64.3 | 70.0 | 68.6 | 62.2 | 50.3 | 38.7 | 34.3 | 70.0 |
| Year Highest Occurred | 1999 | 1995 | 1972 | 1989 | 1996 | 2000 | 1998 | 1995 | 1998 | 1987 | 1978 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 16.8 | 19.8 | 32.1 | 38.2 | 48.3 | 56.7 | 64.1 | 62.1 | 54.0 | 42.3 | 29.4 | 20.7 | 16.8 |
| Year Lowest Occurred | 1973 | 1974 | 1977 | 1973 | 1975 | 1975 | 1995 | 1974 | 1985 | 1984 | 2000 | 1978 | 1973 |
| Mean Min. Temperature (F) | 6.4 | 13.0 | 21.2 | 25.6 | 33.3 | 40.1 | 48.1 | 47.9 | 39.0 | 27.8 | 18.3 | 10.4 | 27.6 |
| Highest Mean Min. Temperature (F) | 18.6 | 20.2 | 26.0 | 29.3 | 38.0 | 44.6 | 53.1 | 51.8 | 45.2 | 36.3 | 26.3 | 18.6 | 53.1 |
| Year Highest Occurred | 1980 | 1995 | 1995 | 1990 | 1992 | 1988 | 1999 | 1982 | 1997 | 1972 | 1978 | 1984 | 1999 |
| Lowest Mean Min. Temperature (F) | -2.9 | -2.1 | 15.7 | 21.7 | 29.3 | 34.8 | 42.9 | 43.5 | 33.3 | 21.4 | 9.6 | 1.3 | -2.9 |
| Year Lowest Occurred | 1973 | 1974 | 1977 | 1974 | 1971 | 1975 | 1987 | 1978 | 1987 | 1999 | 1989 | 1976 | 1973 |
| Mean Precipitation (in.) | 0.90 | 0.74 | 1.01 | 0.96 | 1.26 | 0.88 | 1.76 | 2.50 | 1.61 | 1.42 | 1.12 | 0.78 | 14.94 |
| Highest Precipitation (in.) | 2.13 | 1.73 | 2.55 | 2.87 | 4.44 | 2.35 | 5.07 | 4.44 | 3.80 | 4.18 | 2.63 | 2.32 | 5.07 |
| Year Highest Occurred | 1979 | 1982 | 1978 | 1999 | 1979 | 1986 | 1999 | 1984 | 1977 | 1972 | 1986 | 1990 | 1999 |
| Lowest Precipitation (in.) | 0.15 | 0.03 | 0.02 | 0.06 | 0.00 | 0.02 | 0.20 | 0.04 | 0.13 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1999 | 1997 | 1996 | 1996 | 1998 | 1993 | 2000 | 2000 | 1995 | 1989 | 1999 | 1996 |
| Heating Degree Days (F) | 1290. | 1004. | 881. | 660. | 412. | 149. | 31. | 55. | 230. | 569. | 910. | 1196. | 7387. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 23. | 90. | 64. | 7. | 0. | 0. | 0. | 184. |