| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 20.7 | 27.5 | 39.3 | 56.0 | 69.8 | 77.7 | 83.2 | 81.8 | 72.7 | 59.3 | 38.2 | 25.1 | 54.3 |
| Highest Mean Max. Temperature (F) | 35.9 | 40.3 | 51.2 | 68.5 | 78.0 | 88.2 | 90.6 | 90.1 | 79.3 | 65.2 | 52.2 | 37.7 | 90.6 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1976 | 1983 | 1998 | 1974 | 1999 | 1979 | 1976 |
| Lowest Mean Max. Temperature (F) | 8.1 | 14.2 | 29.5 | 40.9 | 63.0 | 72.1 | 71.5 | 75.2 | 65.4 | 54.8 | 26.4 | 7.5 | 7.5 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1975 | 1996 | 1998 | 1992 | 1992 | 1985 | 1995 | 1996 | 1983 | 1983 |
| Mean Temperature (F) | 10.8 | 17.6 | 29.4 | 44.5 | 58.1 | 66.7 | 72.1 | 70.9 | 61.5 | 48.7 | 30.0 | 16.3 | 43.9 |
| Highest Mean Temperature (F) | 25.3 | 30.8 | 37.7 | 53.5 | 66.1 | 74.9 | 76.6 | 77.9 | 67.7 | 54.8 | 42.1 | 26.8 | 77.9 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1979 | 1983 |
| Lowest Mean Temperature (F) | -2.1 | 2.9 | 20.3 | 35.1 | 51.9 | 61.8 | 62.9 | 64.6 | 56.4 | 44.0 | 18.8 | -0.4 | -2.1 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1982 | 1992 | 1992 | 1993 | 1976 | 1996 | 1983 | 1982 |
| Mean Min. Temperature (F) | 0.9 | 7.6 | 19.4 | 33.0 | 46.3 | 55.7 | 61.0 | 59.9 | 50.2 | 38.1 | 21.8 | 7.4 | 33.4 |
| Highest Mean Min. Temperature (F) | 14.8 | 21.2 | 29.9 | 38.8 | 54.1 | 61.6 | 65.6 | 65.8 | 56.0 | 45.2 | 32.0 | 17.5 | 65.8 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1983 | 1983 | 1978 | 1973 | 1999 | 1999 | 1983 |
| Lowest Mean Min. Temperature (F) | -13.2 | -8.5 | 11.0 | 26.8 | 39.8 | 49.2 | 54.3 | 54.0 | 44.1 | 31.1 | 11.1 | -8.2 | -13.2 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1997 | 1979 | 1982 | 1992 | 1992 | 1993 | 1976 | 1996 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.56 | 0.50 | 1.06 | 1.74 | 2.61 | 3.45 | 3.37 | 2.86 | 1.86 | 1.77 | 0.80 | 0.37 | 20.95 |
| Highest Precipitation (in.) | 1.60 | 1.10 | 3.73 | 5.54 | 6.99 | 8.64 | 9.06 | 5.96 | 4.47 | 7.78 | 3.12 | 1.13 | 9.06 |
| Year Highest Occurred | 1997 | 1998 | 1977 | 1986 | 1972 | 1971 | 1993 | 1988 | 1986 | 1998 | 2000 | 1996 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.07 | 0.08 | 0.00 | 0.60 | 0.86 | 0.45 | 0.64 | 0.12 | 0.28 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1999 | 1971 | 1987 | 1992 | 1987 | 1976 | 1976 | 1972 | 1988 | 1999 | 1989 | 1990 |
| Heating Degree Days (F) | 1681. | 1329. | 1106. | 618. | 248. | 61. | 23. | 29. | 157. | 506. | 1051. | 1511. | 8320. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 34. | 113. | 243. | 211. | 49. | 0. | 0. | 0. | 655. |