| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.7 | 36.1 | 47.4 | 59.2 | 71.3 | 80.8 | 84.7 | 82.3 | 75.1 | 63.2 | 48.0 | 35.6 | 59.5 |
| Highest Mean Max. Temperature (F) | 42.1 | 45.8 | 55.6 | 66.9 | 82.1 | 87.3 | 90.1 | 88.3 | 81.0 | 71.0 | 57.1 | 43.8 | 90.1 |
| Year Highest Occurred | 1990 | 1976 | 2000 | 1977 | 1977 | 1971 | 1999 | 1995 | 1978 | 1971 | 1999 | 1982 | 1999 |
| Lowest Mean Max. Temperature (F) | 18.7 | 24.5 | 37.3 | 52.2 | 64.8 | 76.0 | 78.5 | 77.7 | 68.4 | 57.0 | 41.0 | 22.7 | 18.7 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1997 | 1982 | 1992 | 1994 | 1993 | 1988 | 1996 | 1983 | 1977 |
| Mean Temperature (F) | 23.5 | 28.7 | 39.0 | 49.7 | 61.1 | 70.8 | 75.5 | 73.7 | 65.9 | 54.1 | 40.8 | 28.9 | 51.0 |
| Highest Mean Temperature (F) | 34.7 | 39.7 | 46.0 | 55.1 | 69.7 | 75.9 | 81.3 | 80.9 | 70.4 | 61.7 | 47.7 | 37.1 | 81.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1971 | 1999 | 1995 | 1998 | 1971 | 1999 | 1982 | 1999 |
| Lowest Mean Temperature (F) | 10.3 | 17.0 | 30.9 | 44.0 | 55.3 | 64.4 | 71.4 | 69.7 | 60.9 | 48.0 | 32.9 | 16.5 | 10.3 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1987 | 1976 | 1983 | 1977 |
| Mean Min. Temperature (F) | 16.2 | 21.3 | 30.6 | 40.2 | 50.9 | 60.7 | 66.3 | 65.0 | 56.7 | 44.9 | 33.6 | 22.2 | 42.4 |
| Highest Mean Min. Temperature (F) | 27.2 | 34.0 | 37.6 | 46.2 | 59.4 | 65.5 | 72.5 | 73.5 | 61.4 | 52.5 | 39.4 | 30.3 | 73.5 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1991 | 1991 | 1991 | 1999 | 1995 | 1998 | 1971 | 1990 | 1982 | 1995 |
| Lowest Mean Min. Temperature (F) | 1.9 | 8.9 | 24.4 | 34.5 | 44.0 | 52.9 | 62.1 | 60.3 | 50.9 | 38.4 | 23.9 | 10.2 | 1.9 |
| Year Lowest Occurred | 1977 | 1978 | 1984 | 1982 | 1981 | 1982 | 1984 | 1982 | 1974 | 1980 | 1976 | 1983 | 1977 |
| Mean Precipitation (in.) | 1.95 | 1.78 | 2.83 | 3.82 | 3.86 | 4.16 | 3.82 | 3.91 | 3.45 | 2.79 | 3.22 | 2.76 | 38.35 |
| Highest Precipitation (in.) | 4.19 | 6.76 | 5.37 | 7.84 | 6.99 | 13.03 | 10.29 | 9.95 | 9.44 | 9.04 | 7.63 | 7.21 | 13.03 |
| Year Highest Occurred | 1993 | 1997 | 1976 | 1975 | 1980 | 1993 | 1996 | 1987 | 1977 | 1991 | 1985 | 1982 | 1993 |
| Lowest Precipitation (in.) | 0.13 | 0.56 | 0.61 | 0.45 | 0.25 | 1.09 | 1.36 | 0.76 | 0.01 | 0.73 | 0.55 | 0.50 | 0.01 |
| Year Lowest Occurred | 1981 | 1996 | 1981 | 1971 | 1992 | 1988 | 1991 | 1996 | 1979 | 1992 | 1976 | 1989 | 1979 |
| Heating Degree Days (F) | 1288. | 1017. | 805. | 462. | 203. | 28. | 4. | 11. | 67. | 352. | 726. | 1120. | 6083. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 82. | 199. | 330. | 279. | 95. | 12. | 0. | 0. | 1001. |