| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.7 | 44.1 | 50.6 | 57.4 | 64.9 | 72.8 | 80.7 | 80.6 | 72.4 | 61.7 | 46.3 | 39.6 | 59.2 |
| Highest Mean Max. Temperature (F) | 48.0 | 53.3 | 56.9 | 66.5 | 74.6 | 80.3 | 87.5 | 86.5 | 78.2 | 70.9 | 53.6 | 47.7 | 87.5 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1987 | 1992 | 1992 | 1985 | 1986 | 1998 | 1988 | 1999 | 1989 | 1985 |
| Lowest Mean Max. Temperature (F) | 29.0 | 33.7 | 45.1 | 51.2 | 57.1 | 67.1 | 71.5 | 72.5 | 64.4 | 53.4 | 35.8 | 29.8 | 29.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 31.2 | 34.4 | 38.9 | 43.7 | 50.3 | 57.0 | 63.5 | 63.1 | 55.5 | 47.0 | 37.0 | 31.2 | 46.1 |
| Highest Mean Temperature (F) | 38.4 | 40.8 | 44.4 | 50.3 | 55.2 | 62.5 | 69.1 | 66.9 | 61.1 | 54.0 | 44.3 | 37.9 | 69.1 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1987 | 1993 | 1986 | 1998 | 1986 | 1998 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 19.6 | 22.5 | 34.1 | 38.2 | 44.9 | 52.0 | 56.2 | 58.8 | 49.6 | 41.7 | 25.9 | 23.2 | 19.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1976 | 1993 | 1975 | 1985 | 1971 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 22.6 | 24.7 | 27.2 | 30.0 | 35.6 | 41.2 | 46.2 | 45.6 | 38.6 | 32.2 | 27.6 | 22.7 | 32.9 |
| Highest Mean Min. Temperature (F) | 29.0 | 30.1 | 32.2 | 34.2 | 40.9 | 45.1 | 52.2 | 49.6 | 44.0 | 38.0 | 34.9 | 30.0 | 52.2 |
| Year Highest Occurred | 1983 | 1983 | 1983 | 1987 | 1993 | 1986 | 1998 | 1999 | 1998 | 1979 | 1999 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 10.1 | 11.4 | 23.1 | 25.1 | 31.9 | 35.9 | 40.8 | 41.6 | 34.6 | 26.8 | 15.9 | 13.0 | 10.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1999 | 1999 | 1976 | 1993 | 1995 | 1971 | 1971 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.76 | 1.13 | 0.92 | 0.70 | 0.90 | 0.75 | 0.62 | 0.60 | 0.49 | 0.62 | 1.46 | 1.78 | 11.73 |
| Highest Precipitation (in.) | 3.47 | 3.65 | 2.76 | 2.18 | 4.11 | 2.83 | 3.73 | 2.76 | 1.74 | 1.45 | 4.58 | 6.32 | 6.32 |
| Year Highest Occurred | 1974 | 1986 | 1974 | 1978 | 1998 | 1980 | 1987 | 1999 | 1982 | 1979 | 1973 | 1981 | 1981 |
| Lowest Precipitation (in.) | 0.12 | 0.10 | 0.10 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.00 | 0.00 |
| Year Lowest Occurred | 1985 | 1991 | 1973 | 1977 | 1975 | 2000 | 1994 | 2000 | 1999 | 1988 | 1972 | 1976 | 1977 |
| Heating Degree Days (F) | 1049. | 858. | 808. | 639. | 458. | 254. | 118. | 114. | 295. | 558. | 841. | 1050. | 7042. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 14. | 69. | 54. | 10. | 0. | 0. | 0. | 147. |