| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 53.7 | 61.4 | 66.2 | 72.7 | 80.7 | 88.0 | 93.3 | 91.8 | 87.1 | 77.6 | 63.5 | 53.3 | 74.1 |
| Highest Mean Max. Temperature (F) | 58.9 | 66.0 | 73.5 | 80.0 | 88.1 | 93.6 | 97.5 | 95.9 | 91.8 | 83.2 | 70.9 | 58.7 | 97.5 |
| Year Highest Occurred | 1986 | 1991 | 1972 | 1987 | 1992 | 1981 | 1996 | 1998 | 1984 | 1978 | 1995 | 1999 | 1996 |
| Lowest Mean Max. Temperature (F) | 47.5 | 57.9 | 59.8 | 64.5 | 70.5 | 82.3 | 87.8 | 86.7 | 79.8 | 72.7 | 57.5 | 46.4 | 46.4 |
| Year Lowest Occurred | 1972 | 1998 | 1973 | 1975 | 1998 | 1980 | 1987 | 1976 | 1986 | 1984 | 1972 | 1985 | 1985 |
| Mean Temperature (F) | 46.4 | 52.2 | 56.1 | 60.7 | 67.1 | 73.3 | 77.6 | 76.5 | 72.7 | 64.7 | 53.5 | 45.6 | 62.2 |
| Highest Mean Temperature (F) | 52.2 | 55.7 | 60.0 | 65.8 | 73.7 | 78.3 | 81.9 | 80.9 | 77.0 | 69.2 | 59.3 | 50.8 | 81.9 |
| Year Highest Occurred | 1995 | 1992 | 1994 | 1987 | 1992 | 1981 | 1996 | 1998 | 1984 | 1991 | 1995 | 1995 | 1996 |
| Lowest Mean Temperature (F) | 40.8 | 48.6 | 51.1 | 53.5 | 60.7 | 68.7 | 72.9 | 72.5 | 67.3 | 60.4 | 48.6 | 40.3 | 40.3 |
| Year Lowest Occurred | 1972 | 1990 | 1973 | 1975 | 1977 | 1980 | 1987 | 1976 | 1986 | 1971 | 1994 | 1985 | 1985 |
| Mean Min. Temperature (F) | 39.0 | 42.9 | 45.9 | 48.7 | 53.4 | 58.5 | 61.8 | 61.2 | 58.2 | 51.8 | 43.5 | 37.9 | 50.2 |
| Highest Mean Min. Temperature (F) | 46.7 | 47.6 | 50.5 | 52.8 | 59.4 | 63.0 | 66.3 | 65.8 | 62.4 | 56.3 | 49.1 | 44.4 | 66.3 |
| Year Highest Occurred | 1995 | 1992 | 1993 | 1992 | 1997 | 1981 | 1996 | 1998 | 1998 | 1991 | 1997 | 1996 | 1996 |
| Lowest Mean Min. Temperature (F) | 32.2 | 37.9 | 40.7 | 42.5 | 48.5 | 54.7 | 58.0 | 57.7 | 54.0 | 45.4 | 38.9 | 30.9 | 30.9 |
| Year Lowest Occurred | 1976 | 1974 | 1977 | 1975 | 1977 | 1971 | 1987 | 1975 | 1973 | 1971 | 1971 | 1990 | 1990 |
| Mean Precipitation (in.) | 2.43 | 2.34 | 2.13 | 0.89 | 0.47 | 0.06 | 0.03 | 0.04 | 0.27 | 0.70 | 1.40 | 1.67 | 12.43 |
| Highest Precipitation (in.) | 7.22 | 8.47 | 6.46 | 3.96 | 2.65 | 0.31 | 0.60 | 0.55 | 2.68 | 2.23 | 4.03 | 4.87 | 8.47 |
| Year Highest Occurred | 1995 | 1998 | 1995 | 1978 | 1998 | 1991 | 1974 | 1975 | 1983 | 2000 | 1983 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.15 | 0.18 | 0.01 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1997 | 1972 | 1992 | 1992 | 1999 | 2000 | 1999 | 1999 | 1999 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 579. | 360. | 289. | 174. | 69. | 4. | 0. | 0. | 8. | 87. | 347. | 602. | 2519. |
| Cooling Degree Days (F) | 0. | 0. | 10. | 44. | 134. | 252. | 389. | 357. | 238. | 79. | 3. | 0. | 1506. |