| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 35.2 | 42.3 | 52.8 | 62.8 | 70.7 | 78.1 | 85.6 | 85.5 | 76.5 | 62.5 | 44.7 | 34.8 | 61.0 |
| Highest Mean Max. Temperature (F) | 43.8 | 50.2 | 60.5 | 69.0 | 77.9 | 86.4 | 93.2 | 93.5 | 83.7 | 68.4 | 52.5 | 42.3 | 93.5 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1987 | 1993 | 1992 | 1998 | 1971 | 1998 | 1987 | 1981 | 1979 | 1971 |
| Lowest Mean Max. Temperature (F) | 22.5 | 32.4 | 46.6 | 55.0 | 63.2 | 70.3 | 77.8 | 77.4 | 68.2 | 56.2 | 32.1 | 23.0 | 22.5 |
| Year Lowest Occurred | 1979 | 1989 | 1991 | 1975 | 1989 | 1991 | 1993 | 1989 | 1985 | 1990 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 28.2 | 33.7 | 41.1 | 48.4 | 55.5 | 62.5 | 68.6 | 68.1 | 59.5 | 47.7 | 36.1 | 27.8 | 48.1 |
| Highest Mean Temperature (F) | 37.3 | 40.9 | 46.6 | 54.2 | 63.4 | 68.7 | 76.2 | 74.1 | 65.9 | 53.1 | 43.5 | 34.9 | 76.2 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1993 | 1992 | 1998 | 1971 | 1998 | 1988 | 1999 | 1999 | 1998 |
| Lowest Mean Temperature (F) | 12.6 | 24.0 | 35.8 | 40.1 | 49.0 | 55.1 | 63.6 | 61.1 | 55.2 | 42.6 | 23.2 | 18.3 | 12.6 |
| Year Lowest Occurred | 1979 | 1989 | 1991 | 1982 | 1989 | 1991 | 1989 | 1989 | 1977 | 1991 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 21.2 | 25.0 | 29.4 | 34.0 | 40.2 | 46.8 | 51.5 | 50.7 | 42.5 | 32.9 | 27.5 | 20.7 | 35.2 |
| Highest Mean Min. Temperature (F) | 31.7 | 32.9 | 34.8 | 39.5 | 48.9 | 51.0 | 59.2 | 56.5 | 48.8 | 39.3 | 35.5 | 29.3 | 59.2 |
| Year Highest Occurred | 1981 | 1998 | 1986 | 1994 | 1993 | 1992 | 1998 | 1999 | 1997 | 1988 | 1999 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | 2.7 | 15.5 | 22.0 | 21.8 | 34.7 | 39.9 | 46.0 | 44.4 | 35.8 | 25.7 | 14.2 | 11.3 | 2.7 |
| Year Lowest Occurred | 1979 | 1989 | 1982 | 1982 | 1989 | 1991 | 1989 | 1980 | 1981 | 1991 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.20 | 1.06 | 1.04 | 0.77 | 0.92 | 0.63 | 0.52 | 0.36 | 0.52 | 0.68 | 1.42 | 1.68 | 10.80 |
| Highest Precipitation (in.) | 2.63 | 2.39 | 2.10 | 2.17 | 1.93 | 1.39 | 1.94 | 1.61 | 1.40 | 2.42 | 3.41 | 4.36 | 4.36 |
| Year Highest Occurred | 1995 | 1999 | 1983 | 1993 | 1980 | 1998 | 1992 | 1990 | 1986 | 1996 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.35 | 0.04 | 0.16 | 0.07 | 0.05 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.26 | 0.00 |
| Year Lowest Occurred | 1977 | 1988 | 1994 | 1977 | 1992 | 1989 | 1994 | 2000 | 1999 | 1987 | 1976 | 1976 | 1994 |
| Heating Degree Days (F) | 1140. | 879. | 740. | 499. | 314. | 131. | 53. | 64. | 204. | 537. | 866. | 1155. | 6582. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 18. | 55. | 162. | 160. | 39. | 0. | 0. | 0. | 435. |