| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 28.3 | 35.0 | 47.0 | 59.9 | 69.3 | 78.8 | 87.0 | 85.9 | 75.6 | 62.0 | 41.9 | 29.6 | 58.4 |
| Highest Mean Max. Temperature (F) | 41.0 | 44.2 | 58.5 | 70.7 | 79.2 | 87.2 | 91.8 | 91.9 | 83.6 | 71.2 | 53.1 | 37.4 | 91.9 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1988 | 1989 | 1994 | 1990 | 1988 | 1999 | 1980 | 1994 |
| Lowest Mean Max. Temperature (F) | 19.1 | 23.9 | 35.9 | 47.7 | 63.7 | 68.4 | 77.0 | 80.9 | 67.0 | 55.6 | 32.6 | 21.0 | 19.1 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1975 | 1998 | 1993 | 1993 | 1986 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 16.4 | 22.5 | 33.5 | 43.8 | 53.1 | 61.3 | 67.5 | 65.7 | 55.9 | 44.2 | 29.0 | 17.5 | 42.5 |
| Highest Mean Temperature (F) | 27.8 | 30.8 | 41.1 | 49.6 | 58.4 | 67.6 | 71.1 | 70.1 | 63.6 | 51.3 | 36.3 | 26.0 | 71.1 |
| Year Highest Occurred | 1981 | 2000 | 1992 | 1990 | 1992 | 1988 | 1989 | 1991 | 1990 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 5.8 | 9.0 | 20.1 | 35.7 | 48.8 | 55.0 | 60.0 | 61.5 | 48.8 | 39.4 | 20.4 | 8.4 | 5.8 |
| Year Lowest Occurred | 1985 | 1985 | 1985 | 1975 | 1975 | 1998 | 1993 | 1985 | 1971 | 1984 | 1985 | 1985 | 1985 |
| Mean Min. Temperature (F) | 4.4 | 10.0 | 19.9 | 27.6 | 36.9 | 43.8 | 47.9 | 45.5 | 36.1 | 26.4 | 16.0 | 5.3 | 26.7 |
| Highest Mean Min. Temperature (F) | 14.7 | 21.3 | 24.5 | 32.5 | 40.8 | 48.0 | 51.6 | 51.0 | 45.6 | 31.4 | 24.2 | 14.6 | 51.6 |
| Year Highest Occurred | 1981 | 1980 | 1982 | 1990 | 1980 | 1988 | 1975 | 1983 | 1998 | 1988 | 1998 | 1980 | 1975 |
| Lowest Mean Min. Temperature (F) | -8.4 | -5.9 | 4.3 | 23.6 | 31.8 | 41.0 | 43.0 | 39.3 | 29.0 | 18.9 | 6.5 | -5.2 | -8.4 |
| Year Lowest Occurred | 1985 | 1985 | 1985 | 1975 | 1974 | 1975 | 1993 | 1985 | 1971 | 1985 | 1993 | 1984 | 1985 |
| Mean Precipitation (in.) | 0.66 | 0.51 | 0.70 | 0.87 | 1.52 | 1.18 | 0.91 | 0.76 | 0.61 | 0.65 | 0.74 | 0.66 | 9.77 |
| Highest Precipitation (in.) | 1.93 | 1.61 | 1.77 | 2.29 | 4.21 | 2.91 | 2.98 | 1.65 | 2.20 | 2.20 | 1.69 | 1.51 | 4.21 |
| Year Highest Occurred | 1973 | 1978 | 1982 | 1978 | 1980 | 1995 | 1984 | 1983 | 1985 | 1994 | 1983 | 1971 | 1980 |
| Lowest Precipitation (in.) | 0.01 | 0.02 | 0.05 | 0.09 | 0.13 | 0.25 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1992 | 1991 | 1994 | 1977 | 1992 | 1981 | 1974 | 2000 | 1987 | 1988 | 1976 | 1976 | 1974 |
| Heating Degree Days (F) | 1508. | 1191. | 978. | 638. | 370. | 154. | 50. | 71. | 298. | 645. | 1083. | 1474. | 8460. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 43. | 126. | 91. | 24. | 0. | 0. | 0. | 286. |