| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.2 | 43.0 | 55.5 | 64.8 | 74.4 | 83.7 | 93.1 | 91.5 | 80.6 | 66.3 | 47.1 | 35.7 | 64.2 |
| Highest Mean Max. Temperature (F) | 42.5 | 51.7 | 63.8 | 75.0 | 81.3 | 91.5 | 99.7 | 97.6 | 88.5 | 76.1 | 54.6 | 42.6 | 99.7 |
| Year Highest Occurred | 1999 | 1995 | 1992 | 1987 | 1992 | 1974 | 1985 | 1971 | 1990 | 1988 | 1999 | 1993 | 1985 |
| Lowest Mean Max. Temperature (F) | 23.1 | 26.1 | 47.1 | 55.4 | 67.5 | 75.1 | 82.4 | 83.2 | 71.6 | 61.0 | 36.3 | 20.6 | 20.6 |
| Year Lowest Occurred | 1979 | 1989 | 1993 | 1975 | 1977 | 1993 | 1993 | 1976 | 1985 | 1985 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 26.3 | 33.6 | 43.2 | 50.7 | 59.5 | 67.5 | 75.3 | 72.9 | 62.6 | 50.3 | 36.8 | 27.6 | 50.5 |
| Highest Mean Temperature (F) | 33.9 | 40.0 | 48.1 | 56.8 | 64.9 | 73.3 | 80.9 | 77.6 | 69.6 | 57.0 | 42.9 | 35.2 | 80.9 |
| Year Highest Occurred | 1978 | 2000 | 1992 | 1987 | 1992 | 1977 | 1985 | 1971 | 1990 | 1988 | 1999 | 1977 | 1985 |
| Lowest Mean Temperature (F) | 13.0 | 18.1 | 37.6 | 44.8 | 55.3 | 61.6 | 66.9 | 66.7 | 56.6 | 46.4 | 26.9 | 11.1 | 11.1 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1977 | 1993 | 1993 | 1976 | 1985 | 1985 | 1985 | 1985 | 1985 |
| Mean Min. Temperature (F) | 18.4 | 24.1 | 30.9 | 36.6 | 44.5 | 51.3 | 57.4 | 54.3 | 44.5 | 34.2 | 26.5 | 19.5 | 36.9 |
| Highest Mean Min. Temperature (F) | 27.6 | 31.1 | 35.7 | 41.2 | 48.5 | 57.3 | 62.1 | 58.2 | 51.0 | 39.0 | 33.3 | 28.8 | 62.1 |
| Year Highest Occurred | 1981 | 2000 | 1983 | 1990 | 1992 | 1977 | 1985 | 1994 | 1998 | 1975 | 1983 | 1973 | 1985 |
| Lowest Mean Min. Temperature (F) | 2.8 | 10.1 | 25.5 | 32.4 | 40.9 | 45.8 | 51.4 | 48.5 | 39.7 | 29.8 | 15.0 | 1.6 | 1.6 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1999 | 1999 | 1980 | 1993 | 1995 | 1971 | 1976 | 1993 | 1985 | 1985 |
| Mean Precipitation (in.) | 1.29 | 0.87 | 0.86 | 0.68 | 0.93 | 0.62 | 0.30 | 0.28 | 0.47 | 0.55 | 1.19 | 1.41 | 9.45 |
| Highest Precipitation (in.) | 2.40 | 2.10 | 3.29 | 2.69 | 5.00 | 1.55 | 1.23 | 1.60 | 1.91 | 2.08 | 2.72 | 4.34 | 5.00 |
| Year Highest Occurred | 1993 | 1999 | 1983 | 1978 | 1998 | 1993 | 1997 | 1979 | 1980 | 1982 | 1981 | 1983 | 1998 |
| Lowest Precipitation (in.) | 0.15 | 0.00 | 0.07 | 0.03 | 0.09 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 |
| Year Lowest Occurred | 1985 | 1995 | 1994 | 1977 | 1972 | 1994 | 2000 | 2000 | 1999 | 1999 | 1976 | 1986 | 1995 |
| Heating Degree Days (F) | 1199. | 881. | 677. | 431. | 194. | 64. | 9. | 18. | 143. | 457. | 845. | 1160. | 6078. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 23. | 139. | 327. | 262. | 70. | 0. | 0. | 0. | 823. |