| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 35.1 | 39.0 | 46.5 | 56.2 | 65.6 | 73.5 | 80.5 | 80.1 | 68.6 | 55.7 | 42.4 | 35.5 | 56.6 |
| Highest Mean Max. Temperature (F) | 40.5 | 44.9 | 50.1 | 61.1 | 73.4 | 80.8 | 89.2 | 85.8 | 77.4 | 61.9 | 47.3 | 45.4 | 89.2 |
| Year Highest Occurred | 1983 | 1995 | 1992 | 1980 | 1992 | 1992 | 1985 | 1973 | 1998 | 1979 | 1999 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 25.6 | 30.3 | 42.0 | 50.4 | 53.4 | 67.4 | 70.6 | 73.5 | 62.3 | 51.9 | 32.2 | 27.9 | 25.6 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1975 | 1996 | 1981 | 1993 | 1976 | 1971 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 28.5 | 31.5 | 36.8 | 44.0 | 52.0 | 59.1 | 64.7 | 63.9 | 54.3 | 43.9 | 35.3 | 29.1 | 45.3 |
| Highest Mean Temperature (F) | 35.0 | 36.8 | 40.2 | 48.0 | 58.1 | 64.3 | 70.7 | 67.5 | 60.1 | 48.2 | 39.7 | 35.0 | 70.7 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1994 | 1993 | 1992 | 1998 | 1994 | 1998 | 1988 | 1983 | 1979 | 1998 |
| Lowest Mean Temperature (F) | 15.9 | 21.5 | 32.7 | 39.4 | 44.9 | 54.9 | 59.3 | 59.4 | 49.6 | 40.9 | 25.1 | 21.8 | 15.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1996 | 1981 | 1993 | 1995 | 1971 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 21.8 | 23.9 | 27.0 | 31.8 | 38.4 | 44.7 | 48.9 | 47.6 | 39.9 | 32.0 | 28.1 | 22.7 | 33.9 |
| Highest Mean Min. Temperature (F) | 30.1 | 31.2 | 32.3 | 36.1 | 44.6 | 48.3 | 55.5 | 52.6 | 45.3 | 36.9 | 33.8 | 29.0 | 55.5 |
| Year Highest Occurred | 1994 | 1992 | 1998 | 1994 | 1993 | 1974 | 1998 | 1997 | 1997 | 1997 | 1983 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 6.2 | 12.8 | 23.1 | 26.6 | 34.6 | 41.3 | 45.4 | 42.0 | 35.7 | 27.2 | 18.0 | 14.6 | 6.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1982 | 2000 | 1981 | 1987 | 1999 | 1974 | 1985 | 1978 | 1979 |
| Mean Precipitation (in.) | 2.66 | 2.32 | 2.18 | 1.94 | 2.37 | 1.92 | 1.25 | 1.19 | 1.25 | 1.81 | 3.13 | 3.29 | 25.31 |
| Highest Precipitation (in.) | 5.81 | 5.14 | 4.32 | 4.56 | 4.39 | 4.69 | 5.30 | 4.12 | 3.14 | 4.62 | 5.55 | 6.46 | 6.46 |
| Year Highest Occurred | 1974 | 1979 | 1997 | 1982 | 1980 | 1971 | 1993 | 1978 | 1973 | 1975 | 1983 | 1980 | 1980 |
| Lowest Precipitation (in.) | 0.16 | 0.41 | 0.47 | 0.27 | 0.65 | 0.50 | 0.00 | 0.02 | 0.00 | 0.00 | 0.71 | 0.75 | 0.00 |
| Year Lowest Occurred | 1985 | 1973 | 1992 | 1998 | 1983 | 1998 | 1973 | 1973 | 1990 | 1998 | 1993 | 1976 | 1973 |
| Heating Degree Days (F) | 1133. | 940. | 876. | 631. | 404. | 198. | 94. | 102. | 330. | 656. | 893. | 1113. | 7370. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 21. | 85. | 66. | 7. | 0. | 0. | 0. | 181. |