| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 28.6 | 33.0 | 42.0 | 52.7 | 64.7 | 75.6 | 81.4 | 79.7 | 71.9 | 59.4 | 45.0 | 33.1 | 55.6 |
| Highest Mean Max. Temperature (F) | 38.6 | 40.3 | 50.1 | 59.8 | 73.3 | 84.5 | 86.8 | 84.4 | 79.2 | 63.9 | 54.6 | 41.5 | 86.8 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1983 | 1988 | 1998 | 1971 | 1999 | 1998 | 1983 |
| Lowest Mean Max. Temperature (F) | 16.8 | 24.7 | 35.4 | 47.5 | 57.8 | 69.8 | 76.3 | 75.5 | 66.4 | 55.2 | 38.0 | 22.9 | 16.8 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1983 | 1993 | 1992 | 1994 | 1993 | 1976 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 20.9 | 25.6 | 34.3 | 44.3 | 55.0 | 65.1 | 71.4 | 70.5 | 62.8 | 51.1 | 38.2 | 26.2 | 47.1 |
| Highest Mean Temperature (F) | 31.7 | 35.3 | 40.5 | 48.8 | 61.1 | 71.5 | 76.3 | 75.6 | 68.4 | 57.0 | 44.8 | 33.7 | 76.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1998 | 1988 | 1983 | 1995 | 1998 | 1971 | 1999 | 1982 | 1983 |
| Lowest Mean Temperature (F) | 9.1 | 16.7 | 28.3 | 39.8 | 49.7 | 60.6 | 67.1 | 66.4 | 57.4 | 47.2 | 30.2 | 16.3 | 9.1 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1997 | 1993 | 1992 | 1992 | 1993 | 1988 | 1995 | 1983 | 1977 |
| Mean Min. Temperature (F) | 13.2 | 18.1 | 26.6 | 35.8 | 45.2 | 54.5 | 61.4 | 61.3 | 53.6 | 42.7 | 31.3 | 19.3 | 38.6 |
| Highest Mean Min. Temperature (F) | 24.8 | 30.2 | 32.9 | 40.0 | 51.1 | 60.2 | 65.8 | 67.7 | 57.5 | 50.1 | 37.0 | 27.5 | 67.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1998 | 1998 | 1987 | 1983 | 1995 | 1998 | 1971 | 1998 | 1987 | 1995 |
| Lowest Mean Min. Temperature (F) | 1.4 | 8.8 | 19.1 | 31.0 | 39.9 | 49.7 | 57.5 | 56.5 | 48.3 | 38.6 | 22.3 | 7.3 | 1.4 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1996 | 1997 | 1982 | 1978 | 1992 | 1993 | 1988 | 1995 | 2000 | 1977 |
| Mean Precipitation (in.) | 1.76 | 1.33 | 2.25 | 2.99 | 2.90 | 3.28 | 3.19 | 4.08 | 3.29 | 2.51 | 2.43 | 1.89 | 31.90 |
| Highest Precipitation (in.) | 3.61 | 3.46 | 6.26 | 5.49 | 5.92 | 7.51 | 6.13 | 13.30 | 13.20 | 5.09 | 6.54 | 5.06 | 13.30 |
| Year Highest Occurred | 2000 | 1971 | 1976 | 1993 | 1983 | 1996 | 1977 | 1998 | 1986 | 1991 | 1985 | 1971 | 1998 |
| Lowest Precipitation (in.) | 0.05 | 0.02 | 0.20 | 0.72 | 0.53 | 0.55 | 1.30 | 0.80 | 0.13 | 0.42 | 0.38 | 0.30 | 0.02 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1989 | 1981 | 1995 | 1971 | 1976 | 1979 | 1975 | 1976 | 1993 | 1987 |
| Heating Degree Days (F) | 1368. | 1105. | 952. | 623. | 326. | 91. | 13. | 19. | 117. | 434. | 806. | 1202. | 7056. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 92. | 212. | 189. | 50. | 1. | 0. | 0. | 559. |