| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 57.8 | 64.8 | 69.7 | 77.3 | 85.2 | 92.9 | 97.6 | 96.3 | 91.2 | 81.3 | 66.8 | 57.8 | 78.2 |
| Highest Mean Max. Temperature (F) | 63.4 | 72.7 | 77.9 | 86.4 | 91.1 | 97.3 | 101.7 | 99.3 | 95.8 | 86.8 | 73.4 | 65.2 | 101.7 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1987 | 1992 | 1977 | 1988 | 1992 | 1974 | 1978 | 1995 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 48.0 | 58.7 | 61.5 | 70.6 | 74.9 | 86.2 | 93.0 | 91.8 | 83.6 | 74.7 | 58.0 | 49.6 | 48.0 |
| Year Lowest Occurred | 1972 | 1971 | 1973 | 1983 | 1998 | 1998 | 1983 | 1979 | 1986 | 1984 | 1972 | 1972 | 1972 |
| Mean Temperature (F) | 47.1 | 51.9 | 56.0 | 61.2 | 68.0 | 74.9 | 79.5 | 78.1 | 73.2 | 64.3 | 52.9 | 46.1 | 62.8 |
| Highest Mean Temperature (F) | 51.8 | 55.9 | 61.4 | 67.3 | 74.9 | 78.8 | 83.4 | 82.1 | 77.5 | 69.5 | 57.2 | 52.4 | 83.4 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1987 | 1992 | 1977 | 1988 | 1998 | 1991 | 1987 | 1995 | 1977 | 1988 |
| Lowest Mean Temperature (F) | 40.6 | 47.3 | 51.0 | 56.0 | 61.9 | 70.8 | 74.9 | 74.1 | 66.2 | 59.5 | 46.4 | 41.3 | 40.6 |
| Year Lowest Occurred | 1972 | 1971 | 1973 | 1975 | 1998 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1990 | 1972 |
| Mean Min. Temperature (F) | 36.4 | 38.9 | 42.2 | 45.0 | 50.8 | 56.8 | 61.4 | 59.9 | 55.2 | 47.3 | 39.0 | 34.4 | 47.3 |
| Highest Mean Min. Temperature (F) | 43.1 | 43.2 | 48.0 | 49.4 | 58.7 | 61.2 | 65.9 | 65.4 | 60.1 | 53.5 | 44.9 | 41.4 | 65.9 |
| Year Highest Occurred | 1997 | 1992 | 1993 | 1992 | 1992 | 2000 | 1985 | 1998 | 1998 | 1987 | 1997 | 1977 | 1985 |
| Lowest Mean Min. Temperature (F) | 30.8 | 33.5 | 34.5 | 40.7 | 46.6 | 52.0 | 56.1 | 55.2 | 48.7 | 42.8 | 32.5 | 27.4 | 27.4 |
| Year Lowest Occurred | 1976 | 1985 | 1977 | 1975 | 1977 | 1980 | 1981 | 1981 | 1986 | 1981 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 2.44 | 2.25 | 2.57 | 0.90 | 0.41 | 0.13 | 0.01 | 0.02 | 0.34 | 0.67 | 1.33 | 1.50 | 12.57 |
| Highest Precipitation (in.) | 5.96 | 5.84 | 8.44 | 2.63 | 2.74 | 1.17 | 0.08 | 0.18 | 2.62 | 1.65 | 3.97 | 4.60 | 8.44 |
| Year Highest Occurred | 1999 | 1998 | 1991 | 1998 | 1971 | 1993 | 1979 | 1977 | 1978 | 1974 | 1985 | 1996 | 1991 |
| Lowest Precipitation (in.) | 0.00 | 0.18 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1977 | 1972 | 1997 | 1999 | 1999 | 2000 | 1999 | 2000 | 1999 | 1995 | 1999 | 1976 |
| Heating Degree Days (F) | 556. | 368. | 291. | 160. | 58. | 3. | 0. | 0. | 10. | 108. | 365. | 586. | 2505. |
| Cooling Degree Days (F) | 0. | 0. | 11. | 44. | 151. | 298. | 450. | 407. | 257. | 86. | 3. | 0. | 1707. |