| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.2 | 45.6 | 57.2 | 67.6 | 76.6 | 85.3 | 90.6 | 89.4 | 81.3 | 70.1 | 54.2 | 42.4 | 66.6 |
| Highest Mean Max. Temperature (F) | 52.4 | 57.5 | 65.6 | 77.1 | 83.0 | 93.1 | 101.2 | 97.6 | 88.1 | 75.8 | 65.6 | 51.6 | 101.2 |
| Year Highest Occurred | 1990 | 1991 | 1986 | 1981 | 1998 | 1988 | 1980 | 1983 | 1978 | 1971 | 1999 | 1988 | 1980 |
| Lowest Mean Max. Temperature (F) | 25.4 | 32.2 | 47.7 | 59.0 | 67.5 | 79.7 | 85.8 | 81.6 | 73.6 | 63.6 | 46.2 | 23.5 | 23.5 |
| Year Lowest Occurred | 1979 | 1978 | 1975 | 1983 | 1995 | 1999 | 1996 | 1992 | 1974 | 1976 | 1996 | 1983 | 1983 |
| Mean Temperature (F) | 29.9 | 35.8 | 46.3 | 56.7 | 66.1 | 75.1 | 80.2 | 78.7 | 70.4 | 59.2 | 44.9 | 33.7 | 56.4 |
| Highest Mean Temperature (F) | 41.8 | 44.4 | 52.6 | 65.7 | 72.2 | 80.2 | 88.0 | 85.7 | 75.8 | 64.2 | 54.1 | 39.8 | 88.0 |
| Year Highest Occurred | 1990 | 1991 | 1986 | 1981 | 1998 | 1988 | 1980 | 1983 | 1978 | 1971 | 1999 | 1988 | 1980 |
| Lowest Mean Temperature (F) | 16.6 | 23.1 | 36.6 | 49.6 | 59.8 | 70.5 | 75.8 | 72.5 | 62.2 | 52.1 | 36.7 | 16.6 | 16.6 |
| Year Lowest Occurred | 1979 | 1978 | 1975 | 1983 | 1976 | 1982 | 1971 | 1992 | 1974 | 1976 | 1976 | 1983 | 1979 |
| Mean Min. Temperature (F) | 20.5 | 25.9 | 35.4 | 45.7 | 55.6 | 64.8 | 69.7 | 67.9 | 59.4 | 48.3 | 35.6 | 25.0 | 46.2 |
| Highest Mean Min. Temperature (F) | 31.1 | 34.6 | 41.7 | 54.3 | 61.3 | 68.4 | 74.7 | 73.9 | 65.7 | 53.3 | 43.1 | 31.0 | 74.7 |
| Year Highest Occurred | 1990 | 1999 | 1973 | 1981 | 1998 | 1994 | 1980 | 2000 | 1998 | 2000 | 1998 | 1991 | 1980 |
| Lowest Mean Min. Temperature (F) | 7.3 | 13.5 | 25.4 | 40.1 | 49.0 | 60.6 | 64.9 | 62.5 | 50.7 | 40.6 | 24.6 | 9.7 | 7.3 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1983 | 1976 | 1982 | 1971 | 1986 | 1974 | 1976 | 1976 | 1983 | 1977 |
| Mean Precipitation (in.) | 1.25 | 1.19 | 2.74 | 3.54 | 5.30 | 5.63 | 4.01 | 3.81 | 4.54 | 3.40 | 2.57 | 1.80 | 39.78 |
| Highest Precipitation (in.) | 3.49 | 2.71 | 10.54 | 8.93 | 11.54 | 14.35 | 18.30 | 10.94 | 12.85 | 10.11 | 6.21 | 4.77 | 18.30 |
| Year Highest Occurred | 1979 | 1997 | 1973 | 1999 | 1995 | 1977 | 1993 | 1996 | 1973 | 1998 | 1998 | 1971 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 0.43 | 0.68 | 0.71 | 2.05 | 0.23 | 0.61 | 0.56 | 0.25 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1986 | 1991 | 1994 | 1980 | 1998 | 1973 | 1983 | 1984 | 1990 | 1995 | 1989 | 2000 | 1986 |
| Heating Degree Days (F) | 1089. | 819. | 581. | 273. | 91. | 5. | 0. | 5. | 43. | 204. | 604. | 971. | 4685. |
| Cooling Degree Days (F) | 0. | 0. | 2. | 22. | 125. | 307. | 470. | 427. | 202. | 25. | 2. | 0. | 1582. |