| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.2 | 34.7 | 42.1 | 51.1 | 61.2 | 70.1 | 79.4 | 79.3 | 69.3 | 56.8 | 39.0 | 29.8 | 53.5 |
| Highest Mean Max. Temperature (F) | 36.5 | 41.9 | 51.4 | 61.6 | 69.8 | 78.3 | 86.5 | 84.5 | 77.8 | 66.5 | 49.0 | 35.6 | 86.5 |
| Year Highest Occurred | 1998 | 1995 | 1992 | 1987 | 1992 | 1986 | 1985 | 1994 | 1990 | 1988 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 18.7 | 28.2 | 35.7 | 39.1 | 55.0 | 64.6 | 69.5 | 70.7 | 59.7 | 49.8 | 31.2 | 18.9 | 18.7 |
| Year Lowest Occurred | 1985 | 1985 | 1971 | 1975 | 1977 | 1993 | 1993 | 1976 | 1986 | 1984 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 19.5 | 23.6 | 30.7 | 38.4 | 47.1 | 54.6 | 61.5 | 60.7 | 51.6 | 41.6 | 29.5 | 20.6 | 40.0 |
| Highest Mean Temperature (F) | 26.6 | 31.0 | 37.0 | 44.0 | 52.5 | 61.0 | 66.4 | 64.7 | 57.1 | 47.4 | 36.4 | 27.6 | 66.4 |
| Year Highest Occurred | 1998 | 1995 | 1992 | 1987 | 1993 | 1977 | 1975 | 1994 | 1990 | 1988 | 1999 | 1979 | 1975 |
| Lowest Mean Temperature (F) | 6.6 | 14.2 | 24.0 | 30.6 | 43.1 | 50.7 | 53.0 | 56.2 | 44.2 | 36.0 | 20.8 | 8.2 | 6.6 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1999 | 1993 | 1993 | 1985 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 9.7 | 12.5 | 19.2 | 25.7 | 32.9 | 39.0 | 43.6 | 42.0 | 33.8 | 26.3 | 19.9 | 11.3 | 26.3 |
| Highest Mean Min. Temperature (F) | 18.4 | 20.1 | 25.2 | 29.8 | 36.8 | 45.6 | 50.5 | 46.1 | 38.8 | 31.9 | 25.5 | 20.9 | 50.5 |
| Year Highest Occurred | 1981 | 1995 | 1983 | 1990 | 1993 | 1977 | 1975 | 1983 | 1976 | 1975 | 1995 | 1977 | 1975 |
| Lowest Mean Min. Temperature (F) | -6.0 | 0.1 | 9.8 | 19.6 | 28.9 | 35.7 | 36.5 | 35.7 | 28.5 | 21.3 | 10.4 | -2.5 | -6.0 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1982 | 1984 | 1994 | 1993 | 1985 | 1988 | 1985 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 2.73 | 2.48 | 2.20 | 1.87 | 1.91 | 1.65 | 0.69 | 0.69 | 1.04 | 1.48 | 2.79 | 3.06 | 22.59 |
| Highest Precipitation (in.) | 5.39 | 6.11 | 5.53 | 4.13 | 5.48 | 4.23 | 1.85 | 2.03 | 3.48 | 5.09 | 7.55 | 10.86 | 10.86 |
| Year Highest Occurred | 1974 | 1986 | 1995 | 1996 | 1998 | 1993 | 1983 | 1975 | 1985 | 1975 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.21 | 0.50 | 0.36 | 0.02 | 0.17 | 0.47 | 0.00 | 0.01 | 0.00 | 0.00 | 0.10 | 0.27 | 0.00 |
| Year Lowest Occurred | 1985 | 1991 | 1992 | 1977 | 1992 | 1994 | 1999 | 1973 | 1987 | 1987 | 1976 | 1986 | 1999 |
| Heating Degree Days (F) | 1413. | 1159. | 1065. | 798. | 557. | 322. | 162. | 169. | 409. | 726. | 1066. | 1378. | 9224. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 7. | 53. | 34. | 6. | 0. | 0. | 0. | 100. |