| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 20.7 | 25.9 | 36.3 | 50.5 | 65.8 | 74.7 | 78.1 | 75.1 | 65.1 | 52.5 | 36.7 | 24.6 | 50.5 |
| Highest Mean Max. Temperature (F) | 31.0 | 36.5 | 43.5 | 59.8 | 76.3 | 80.5 | 83.1 | 79.7 | 71.9 | 59.1 | 44.2 | 32.6 | 83.1 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1983 | 1983 | 1998 | 1973 | 1999 | 1994 | 1983 |
| Lowest Mean Max. Temperature (F) | 11.5 | 17.8 | 29.2 | 43.0 | 56.7 | 69.7 | 70.9 | 71.0 | 60.3 | 46.7 | 28.1 | 15.3 | 11.5 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1997 | 1993 | 1992 | 1997 | 1974 | 1987 | 1995 | 1989 | 1977 |
| Mean Temperature (F) | 10.4 | 15.6 | 25.4 | 39.7 | 53.2 | 63.0 | 66.6 | 64.7 | 54.5 | 43.2 | 29.0 | 16.3 | 40.1 |
| Highest Mean Temperature (F) | 21.1 | 27.8 | 33.7 | 46.0 | 61.7 | 67.3 | 71.4 | 69.3 | 59.8 | 50.6 | 34.9 | 24.2 | 71.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1995 | 1983 | 1983 | 1994 | 1971 | 1999 | 1994 | 1983 |
| Lowest Mean Temperature (F) | -0.9 | 5.7 | 19.1 | 33.6 | 44.9 | 58.0 | 61.0 | 60.3 | 49.1 | 37.9 | 20.8 | 5.9 | -0.9 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1997 | 1982 | 1992 | 1997 | 1974 | 1987 | 1995 | 1989 | 1977 |
| Mean Min. Temperature (F) | 0.0 | 5.3 | 14.5 | 28.8 | 40.6 | 51.2 | 55.1 | 54.2 | 43.9 | 33.9 | 21.2 | 7.9 | 29.7 |
| Highest Mean Min. Temperature (F) | 11.2 | 19.1 | 24.1 | 34.3 | 48.3 | 56.7 | 59.6 | 60.4 | 49.7 | 42.4 | 26.2 | 16.5 | 60.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1986 | 1991 | 1991 | 1983 | 1995 | 1994 | 1971 | 1990 | 1982 | 1995 |
| Lowest Mean Min. Temperature (F) | -13.2 | -6.4 | 7.7 | 24.0 | 33.1 | 45.4 | 51.1 | 49.6 | 37.9 | 28.6 | 11.8 | -4.3 | -13.2 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1972 | 1997 | 1982 | 1992 | 1997 | 1974 | 1976 | 1976 | 1976 | 1977 |
| Mean Precipitation (in.) | 1.29 | 0.80 | 1.67 | 2.10 | 3.17 | 3.52 | 3.62 | 3.92 | 3.78 | 2.41 | 2.06 | 1.25 | 29.59 |
| Highest Precipitation (in.) | 3.29 | 2.41 | 3.85 | 4.95 | 7.31 | 10.40 | 8.18 | 9.57 | 7.02 | 5.73 | 4.52 | 3.08 | 10.40 |
| Year Highest Occurred | 1997 | 1971 | 1973 | 1991 | 1999 | 1981 | 2000 | 1980 | 1980 | 1979 | 1991 | 1996 | 1981 |
| Lowest Precipitation (in.) | 0.15 | 0.00 | 0.06 | 0.46 | 0.26 | 1.50 | 0.76 | 1.17 | 0.77 | 0.41 | 0.36 | 0.24 | 0.00 |
| Year Lowest Occurred | 1974 | 1987 | 1974 | 1979 | 1986 | 1995 | 1975 | 1987 | 1976 | 1976 | 1981 | 1994 | 1987 |
| Heating Degree Days (F) | 1693. | 1383. | 1228. | 759. | 386. | 114. | 52. | 86. | 318. | 675. | 1081. | 1511. | 9286. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 21. | 53. | 101. | 75. | 3. | 0. | 0. | 0. | 253. |