| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.6 | 35.4 | 44.1 | 54.9 | 64.4 | 74.7 | 83.7 | 82.9 | 73.1 | 59.7 | 41.2 | 30.6 | 56.2 |
| Highest Mean Max. Temperature (F) | 36.1 | 44.2 | 55.3 | 66.9 | 74.5 | 85.4 | 92.0 | 88.8 | 83.6 | 70.6 | 53.3 | 37.9 | 92.0 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1988 | 1989 | 1991 | 1990 | 1988 | 1999 | 1979 | 1989 |
| Lowest Mean Max. Temperature (F) | 17.5 | 29.0 | 36.2 | 43.2 | 57.6 | 65.1 | 69.6 | 75.9 | 62.8 | 52.2 | 32.0 | 23.7 | 17.5 |
| Year Lowest Occurred | 1979 | 1993 | 1976 | 1975 | 1991 | 1998 | 1993 | 1993 | 1986 | 1984 | 1994 | 1978 | 1979 |
| Mean Temperature (F) | 20.7 | 25.1 | 33.5 | 41.9 | 50.2 | 58.4 | 65.2 | 64.3 | 55.3 | 44.3 | 31.2 | 21.5 | 42.6 |
| Highest Mean Temperature (F) | 27.2 | 32.1 | 40.9 | 47.9 | 55.9 | 65.4 | 70.4 | 69.2 | 63.1 | 52.2 | 39.8 | 28.6 | 70.4 |
| Year Highest Occurred | 1998 | 1995 | 1986 | 1987 | 1992 | 1988 | 1989 | 1991 | 1990 | 1988 | 1999 | 1975 | 1989 |
| Lowest Mean Temperature (F) | 6.5 | 17.5 | 24.2 | 34.3 | 46.0 | 51.9 | 55.1 | 59.3 | 48.9 | 38.7 | 23.2 | 13.0 | 6.5 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1991 | 1998 | 1993 | 1993 | 1985 | 1984 | 1994 | 1990 | 1979 |
| Mean Min. Temperature (F) | 11.7 | 14.8 | 22.8 | 28.9 | 36.0 | 42.0 | 46.6 | 45.7 | 37.5 | 28.8 | 21.1 | 12.4 | 29.0 |
| Highest Mean Min. Temperature (F) | 20.3 | 23.7 | 30.1 | 32.4 | 40.4 | 46.9 | 52.7 | 52.3 | 44.5 | 33.9 | 27.3 | 22.2 | 52.7 |
| Year Highest Occurred | 1998 | 1986 | 1972 | 1978 | 1984 | 1972 | 1975 | 1983 | 1998 | 1988 | 1995 | 1975 | 1975 |
| Lowest Mean Min. Temperature (F) | -4.5 | 5.4 | 12.2 | 24.5 | 31.7 | 36.7 | 40.6 | 40.3 | 31.9 | 23.8 | 13.1 | 0.4 | -4.5 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1979 | 1979 | 1979 | 1993 | 1985 | 1985 | 1980 | 1979 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.54 | 0.97 | 1.38 | 1.62 | 2.75 | 1.48 | 1.39 | 1.34 | 1.39 | 1.37 | 1.53 | 1.30 | 18.06 |
| Highest Precipitation (in.) | 3.64 | 1.92 | 4.21 | 3.93 | 5.81 | 3.57 | 3.66 | 3.34 | 3.21 | 3.32 | 2.94 | 4.32 | 5.81 |
| Year Highest Occurred | 1997 | 1999 | 1995 | 1986 | 1987 | 1998 | 1973 | 1993 | 1982 | 1994 | 1983 | 1996 | 1987 |
| Lowest Precipitation (in.) | 0.26 | 0.22 | 0.26 | 0.26 | 0.00 | 0.12 | 0.05 | 0.06 | 0.00 | 0.00 | 0.06 | 0.15 | 0.00 |
| Year Lowest Occurred | 1992 | 1991 | 1994 | 1987 | 1992 | 1978 | 1988 | 1985 | 1987 | 1978 | 1976 | 1976 | 1992 |
| Heating Degree Days (F) | 1374. | 1118. | 977. | 693. | 459. | 223. | 95. | 92. | 304. | 644. | 1014. | 1348. | 8341. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 24. | 99. | 71. | 12. | 0. | 0. | 0. | 206. |