| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.6 | 29.6 | 40.4 | 54.9 | 69.8 | 76.5 | 80.0 | 77.1 | 67.5 | 55.5 | 38.6 | 26.3 | 53.2 |
| Highest Mean Max. Temperature (F) | 34.7 | 39.9 | 48.8 | 66.1 | 80.0 | 83.7 | 86.9 | 85.8 | 75.6 | 62.6 | 47.1 | 33.5 | 86.9 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1988 | 1988 | 1998 | 1973 | 1999 | 1994 | 1988 |
| Lowest Mean Max. Temperature (F) | 13.1 | 21.4 | 34.1 | 48.2 | 61.5 | 71.2 | 73.4 | 71.9 | 61.9 | 49.6 | 29.5 | 15.3 | 13.1 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1995 | 1997 | 1982 | 1992 | 1997 | 1993 | 1987 | 1995 | 1983 | 1994 |
| Mean Temperature (F) | 10.6 | 15.9 | 27.0 | 40.9 | 54.5 | 62.7 | 66.7 | 64.4 | 55.4 | 44.4 | 29.8 | 16.1 | 40.7 |
| Highest Mean Temperature (F) | 22.2 | 29.1 | 36.5 | 49.5 | 62.9 | 67.7 | 72.3 | 70.2 | 59.4 | 52.0 | 36.0 | 23.4 | 72.3 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1988 | 1988 | 1978 | 1971 | 1975 | 1997 | 1988 |
| Lowest Mean Temperature (F) | -0.2 | 5.9 | 19.1 | 34.4 | 46.3 | 57.8 | 60.4 | 58.7 | 49.0 | 39.4 | 19.4 | 5.2 | -0.2 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1996 | 1997 | 1982 | 1996 | 1997 | 1993 | 1987 | 1995 | 1983 | 1977 |
| Mean Min. Temperature (F) | -1.4 | 2.1 | 13.5 | 26.9 | 39.2 | 48.8 | 53.4 | 51.6 | 43.3 | 33.2 | 20.9 | 5.9 | 28.1 |
| Highest Mean Min. Temperature (F) | 10.3 | 18.8 | 25.7 | 35.1 | 46.6 | 54.7 | 59.9 | 57.8 | 48.8 | 42.3 | 25.9 | 15.2 | 59.9 |
| Year Highest Occurred | 1992 | 1998 | 1973 | 1986 | 1982 | 1987 | 1983 | 1983 | 1983 | 1971 | 1981 | 1982 | 1983 |
| Lowest Mean Min. Temperature (F) | -13.9 | -9.6 | 4.0 | 19.5 | 31.1 | 42.9 | 46.6 | 45.3 | 36.1 | 25.5 | 9.3 | -6.8 | -13.9 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1996 | 1997 | 1989 | 1996 | 1990 | 1993 | 1990 | 1995 | 1976 | 1977 |
| Mean Precipitation (in.) | 1.22 | 0.91 | 1.77 | 2.40 | 3.26 | 3.49 | 4.10 | 4.12 | 3.90 | 2.55 | 2.12 | 1.32 | 31.16 |
| Highest Precipitation (in.) | 3.07 | 2.90 | 3.93 | 4.50 | 6.70 | 11.06 | 12.02 | 8.54 | 6.98 | 5.85 | 5.50 | 2.58 | 12.02 |
| Year Highest Occurred | 1996 | 1999 | 1977 | 1977 | 1991 | 1981 | 1986 | 1972 | 1994 | 1995 | 1991 | 1984 | 1986 |
| Lowest Precipitation (in.) | 0.19 | 0.08 | 0.20 | 0.50 | 0.91 | 1.22 | 1.00 | 1.46 | 0.64 | 0.28 | 0.24 | 0.39 | 0.08 |
| Year Lowest Occurred | 1981 | 1993 | 1978 | 1971 | 1986 | 1988 | 1998 | 1981 | 1976 | 1976 | 1976 | 1994 | 1993 |
| Heating Degree Days (F) | 1688. | 1376. | 1180. | 723. | 356. | 126. | 75. | 104. | 295. | 640. | 1058. | 1516. | 9137. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 30. | 56. | 128. | 83. | 6. | 0. | 0. | 0. | 303. |