| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 24.9 | 31.3 | 42.2 | 57.6 | 70.8 | 78.7 | 82.2 | 80.2 | 71.8 | 59.9 | 42.5 | 29.0 | 55.9 |
| Highest Mean Max. Temperature (F) | 36.3 | 41.3 | 51.8 | 66.5 | 80.4 | 85.9 | 88.9 | 86.7 | 79.9 | 66.3 | 53.0 | 38.0 | 88.9 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 12.9 | 22.6 | 34.6 | 48.8 | 63.0 | 73.6 | 75.1 | 76.3 | 65.4 | 53.9 | 34.1 | 18.4 | 12.9 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1975 | 1983 | 1982 | 1992 | 1997 | 1993 | 1980 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 14.3 | 20.3 | 31.6 | 45.5 | 57.2 | 65.7 | 69.4 | 67.5 | 59.1 | 48.1 | 33.4 | 20.0 | 44.3 |
| Highest Mean Temperature (F) | 25.6 | 33.1 | 40.6 | 51.4 | 64.5 | 70.3 | 73.9 | 72.7 | 64.2 | 54.8 | 40.2 | 27.8 | 73.9 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1995 | 1983 | 1983 | 1998 | 1971 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | 1.3 | 10.0 | 23.9 | 38.2 | 50.9 | 59.8 | 63.3 | 62.9 | 53.9 | 42.3 | 25.0 | 8.7 | 1.3 |
| Year Lowest Occurred | 1977 | 1978 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1976 | 1976 | 1983 | 1977 |
| Mean Min. Temperature (F) | 3.6 | 9.3 | 21.0 | 33.3 | 43.6 | 52.6 | 56.5 | 54.8 | 46.4 | 36.2 | 24.2 | 10.9 | 32.7 |
| Highest Mean Min. Temperature (F) | 14.8 | 24.9 | 30.1 | 38.5 | 50.0 | 57.3 | 60.5 | 61.4 | 50.6 | 44.6 | 29.4 | 20.6 | 61.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1985 | 1982 | 1991 | 1983 | 1995 | 1977 | 1971 | 1987 | 1997 | 1995 |
| Lowest Mean Min. Temperature (F) | -10.4 | -3.9 | 12.0 | 27.6 | 37.8 | 46.0 | 51.5 | 49.3 | 39.9 | 28.4 | 11.4 | -3.6 | -10.4 |
| Year Lowest Occurred | 1977 | 1978 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1976 | 1976 | 1976 | 1976 | 1977 |
| Mean Precipitation (in.) | 0.96 | 0.94 | 1.84 | 2.97 | 3.77 | 3.84 | 4.17 | 4.12 | 3.71 | 2.30 | 2.02 | 1.28 | 31.92 |
| Highest Precipitation (in.) | 2.10 | 2.46 | 4.14 | 5.72 | 9.40 | 7.94 | 9.56 | 10.57 | 9.65 | 6.18 | 4.26 | 3.30 | 10.57 |
| Year Highest Occurred | 1996 | 1981 | 1977 | 1976 | 1973 | 1984 | 1982 | 1980 | 1986 | 1979 | 1983 | 1972 | 1980 |
| Lowest Precipitation (in.) | 0.00 | 0.03 | 0.30 | 1.02 | 1.40 | 1.32 | 1.07 | 1.71 | 0.27 | 0.49 | 0.00 | 0.34 | 0.00 |
| Year Lowest Occurred | 1981 | 1978 | 1978 | 1997 | 1981 | 1988 | 1974 | 1976 | 1979 | 1976 | 1976 | 1976 | 1981 |
| Heating Degree Days (F) | 1573. | 1252. | 1035. | 588. | 278. | 73. | 28. | 48. | 196. | 527. | 950. | 1396. | 7944. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 36. | 92. | 162. | 126. | 19. | 1. | 0. | 0. | 437. |