| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.6 | 28.6 | 39.5 | 54.1 | 68.6 | 76.4 | 80.3 | 77.5 | 68.2 | 55.8 | 39.1 | 26.6 | 53.1 |
| Highest Mean Max. Temperature (F) | 33.8 | 37.7 | 48.7 | 61.8 | 78.2 | 83.3 | 85.1 | 83.4 | 76.4 | 63.1 | 50.9 | 35.3 | 85.1 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1983 | 1983 | 1998 | 1973 | 1999 | 1998 | 1983 |
| Lowest Mean Max. Temperature (F) | 13.7 | 20.7 | 32.3 | 46.4 | 59.8 | 71.7 | 72.9 | 72.8 | 62.4 | 50.2 | 31.0 | 17.5 | 13.7 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1995 | 1997 | 1982 | 1992 | 1997 | 1993 | 1980 | 1995 | 1983 | 1994 |
| Mean Temperature (F) | 11.9 | 16.9 | 28.1 | 41.6 | 54.6 | 63.2 | 67.8 | 65.6 | 56.7 | 45.1 | 30.9 | 17.6 | 41.7 |
| Highest Mean Temperature (F) | 22.2 | 29.3 | 36.5 | 47.0 | 62.3 | 68.1 | 72.5 | 70.7 | 61.8 | 52.8 | 38.8 | 25.8 | 72.5 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1995 | 1983 | 1983 | 1998 | 1971 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | 3.1 | 7.0 | 21.0 | 36.0 | 47.4 | 57.9 | 61.3 | 61.5 | 51.5 | 40.5 | 22.8 | 6.7 | 3.1 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1997 | 1982 | 1992 | 1997 | 1993 | 1988 | 1995 | 1976 | 1977 |
| Mean Min. Temperature (F) | 1.2 | 5.1 | 16.7 | 29.0 | 40.5 | 49.9 | 55.2 | 53.6 | 45.1 | 34.4 | 22.6 | 8.6 | 30.2 |
| Highest Mean Min. Temperature (F) | 11.7 | 20.9 | 25.6 | 34.5 | 47.3 | 54.4 | 60.0 | 60.5 | 50.0 | 44.0 | 28.7 | 18.7 | 60.5 |
| Year Highest Occurred | 1998 | 1998 | 1973 | 1986 | 1991 | 1995 | 1983 | 1995 | 1978 | 1971 | 1998 | 1987 | 1995 |
| Lowest Mean Min. Temperature (F) | -9.4 | -6.8 | 9.2 | 22.9 | 35.0 | 44.1 | 49.7 | 48.6 | 39.8 | 28.2 | 13.4 | -5.1 | -9.4 |
| Year Lowest Occurred | 1982 | 1979 | 1989 | 1975 | 1997 | 1982 | 1992 | 1986 | 1974 | 1976 | 1976 | 1976 | 1982 |
| Mean Precipitation (in.) | 1.39 | 1.02 | 2.31 | 3.00 | 3.43 | 3.83 | 3.56 | 3.89 | 3.92 | 2.68 | 2.46 | 1.63 | 33.12 |
| Highest Precipitation (in.) | 3.51 | 2.83 | 6.75 | 4.89 | 8.80 | 8.74 | 7.49 | 8.93 | 9.82 | 5.51 | 5.87 | 3.77 | 9.82 |
| Year Highest Occurred | 1996 | 1981 | 1977 | 1993 | 1973 | 1990 | 1999 | 1974 | 1994 | 1995 | 1992 | 1972 | 1994 |
| Lowest Precipitation (in.) | 0.33 | 0.00 | 0.15 | 0.60 | 0.82 | 1.30 | 0.15 | 1.49 | 1.00 | 0.17 | 0.07 | 0.14 | 0.00 |
| Year Lowest Occurred | 1991 | 1987 | 1978 | 1997 | 1986 | 1972 | 1998 | 1991 | 1989 | 2000 | 1976 | 1994 | 1987 |
| Heating Degree Days (F) | 1646. | 1348. | 1145. | 703. | 345. | 114. | 43. | 76. | 260. | 617. | 1024. | 1469. | 8790. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 22. | 58. | 128. | 93. | 8. | 0. | 0. | 0. | 309. |