| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.7 | 27.8 | 39.0 | 53.8 | 67.1 | 76.0 | 80.0 | 77.5 | 68.7 | 56.3 | 40.5 | 26.9 | 53.0 |
| Highest Mean Max. Temperature (F) | 35.4 | 37.0 | 49.0 | 61.8 | 78.4 | 81.7 | 84.1 | 83.6 | 76.0 | 62.7 | 51.3 | 35.8 | 84.1 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1995 | 1983 | 1983 | 1998 | 1973 | 1999 | 1998 | 1983 |
| Lowest Mean Max. Temperature (F) | 12.2 | 19.1 | 31.7 | 45.8 | 58.6 | 70.2 | 72.4 | 73.4 | 61.6 | 50.6 | 32.1 | 15.8 | 12.2 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1983 | 1993 | 1992 | 1997 | 1993 | 1988 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 13.0 | 17.9 | 29.6 | 43.6 | 56.0 | 65.3 | 69.7 | 67.3 | 58.0 | 46.3 | 31.9 | 18.4 | 43.1 |
| Highest Mean Temperature (F) | 25.4 | 30.8 | 38.4 | 50.1 | 64.4 | 70.5 | 73.7 | 72.5 | 63.6 | 53.5 | 40.2 | 26.9 | 73.7 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1995 | 1983 | 1995 | 1998 | 1971 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | 1.0 | 7.9 | 22.5 | 36.7 | 49.5 | 59.6 | 63.9 | 63.5 | 51.8 | 40.9 | 24.3 | 7.5 | 1.0 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1983 | 1982 | 1992 | 1986 | 1993 | 1987 | 1976 | 1985 | 1977 |
| Mean Min. Temperature (F) | 3.2 | 7.9 | 20.2 | 33.4 | 44.9 | 54.5 | 59.4 | 57.1 | 47.3 | 36.2 | 23.2 | 9.9 | 33.1 |
| Highest Mean Min. Temperature (F) | 15.3 | 24.5 | 29.0 | 38.4 | 51.0 | 59.5 | 63.4 | 63.7 | 52.8 | 44.2 | 29.8 | 20.6 | 63.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1986 | 1982 | 1991 | 1983 | 1995 | 1994 | 1971 | 1998 | 1997 | 1995 |
| Lowest Mean Min. Temperature (F) | -10.2 | -3.8 | 12.2 | 27.6 | 39.5 | 48.3 | 55.4 | 52.7 | 41.2 | 30.5 | 12.6 | -2.3 | -10.2 |
| Year Lowest Occurred | 1977 | 1978 | 1975 | 1975 | 1997 | 1982 | 1992 | 1971 | 1976 | 1976 | 1976 | 1985 | 1977 |
| Mean Precipitation (in.) | 1.11 | 0.98 | 1.95 | 2.87 | 3.63 | 3.66 | 4.12 | 4.11 | 3.78 | 2.31 | 2.27 | 1.34 | 32.13 |
| Highest Precipitation (in.) | 2.79 | 2.79 | 4.35 | 5.27 | 8.52 | 9.04 | 8.68 | 8.91 | 8.33 | 5.63 | 5.20 | 2.99 | 9.04 |
| Year Highest Occurred | 1980 | 1981 | 1973 | 1981 | 1989 | 2000 | 1982 | 1995 | 1986 | 1984 | 1991 | 1982 | 2000 |
| Lowest Precipitation (in.) | 0.06 | 0.07 | 0.19 | 0.66 | 1.20 | 0.94 | 0.84 | 1.60 | 0.20 | 0.17 | 0.04 | 0.27 | 0.04 |
| Year Lowest Occurred | 1981 | 1987 | 1999 | 1997 | 1981 | 1988 | 1998 | 1976 | 1979 | 2000 | 1976 | 1994 | 1976 |
| Heating Degree Days (F) | 1614. | 1320. | 1098. | 643. | 311. | 83. | 19. | 48. | 228. | 582. | 994. | 1445. | 8385. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 32. | 91. | 165. | 119. | 19. | 0. | 0. | 0. | 427. |