| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 54.9 | 62.3 | 67.0 | 73.6 | 81.0 | 88.0 | 92.3 | 91.8 | 88.4 | 79.7 | 65.3 | 55.7 | 75.0 |
| Highest Mean Max. Temperature (F) | 59.5 | 68.1 | 74.6 | 80.9 | 87.7 | 94.9 | 97.3 | 96.6 | 94.3 | 85.6 | 74.1 | 61.2 | 97.3 |
| Year Highest Occurred | 1976 | 1988 | 1972 | 1987 | 1992 | 1981 | 1988 | 1996 | 1984 | 1991 | 1995 | 1999 | 1988 |
| Lowest Mean Max. Temperature (F) | 49.0 | 57.7 | 61.4 | 65.6 | 70.6 | 81.8 | 86.7 | 85.2 | 80.1 | 73.3 | 58.6 | 49.2 | 49.0 |
| Year Lowest Occurred | 1985 | 1998 | 1991 | 1975 | 1998 | 1982 | 1987 | 1976 | 1986 | 1984 | 1982 | 1985 | 1985 |
| Mean Temperature (F) | 45.7 | 51.1 | 54.9 | 59.5 | 65.7 | 71.4 | 74.8 | 74.3 | 71.3 | 63.9 | 53.0 | 45.5 | 60.9 |
| Highest Mean Temperature (F) | 51.6 | 54.7 | 60.0 | 63.7 | 72.2 | 77.5 | 79.6 | 78.4 | 75.8 | 66.8 | 60.0 | 51.1 | 79.6 |
| Year Highest Occurred | 1995 | 1995 | 1997 | 1987 | 1997 | 1981 | 1996 | 1996 | 1984 | 1991 | 1995 | 1995 | 1996 |
| Lowest Mean Temperature (F) | 40.9 | 46.6 | 50.1 | 53.4 | 60.4 | 67.2 | 68.9 | 71.0 | 61.7 | 59.9 | 48.9 | 39.9 | 39.9 |
| Year Lowest Occurred | 1985 | 1990 | 1991 | 1975 | 1977 | 1982 | 1987 | 1976 | 1986 | 1984 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 36.4 | 39.8 | 42.7 | 45.4 | 50.4 | 54.7 | 57.2 | 56.8 | 54.1 | 48.0 | 40.6 | 35.3 | 46.8 |
| Highest Mean Min. Temperature (F) | 44.3 | 45.3 | 48.2 | 49.5 | 56.9 | 60.3 | 62.5 | 60.6 | 57.9 | 51.4 | 45.8 | 42.3 | 62.5 |
| Year Highest Occurred | 1995 | 1996 | 1993 | 1996 | 1997 | 1999 | 1974 | 1998 | 1998 | 1974 | 1995 | 1996 | 1974 |
| Lowest Mean Min. Temperature (F) | 31.3 | 34.1 | 37.1 | 40.1 | 43.3 | 48.1 | 50.7 | 51.0 | 43.2 | 41.9 | 34.8 | 26.4 | 26.4 |
| Year Lowest Occurred | 1991 | 1990 | 1971 | 1989 | 1988 | 1988 | 1994 | 1994 | 1986 | 1989 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 3.34 | 3.12 | 2.66 | 1.17 | 0.53 | 0.10 | 0.05 | 0.05 | 0.34 | 0.97 | 2.01 | 2.26 | 16.60 |
| Highest Precipitation (in.) | 8.44 | 9.93 | 7.00 | 3.45 | 3.23 | 0.69 | 0.56 | 0.65 | 2.51 | 3.47 | 6.06 | 6.49 | 9.93 |
| Year Highest Occurred | 1995 | 1998 | 1982 | 1982 | 1998 | 1993 | 1980 | 1976 | 1989 | 1991 | 1983 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.20 | 0.35 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1988 | 1972 | 1992 | 1992 | 1996 | 2000 | 1999 | 1997 | 1995 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 600. | 391. | 322. | 186. | 87. | 12. | 2. | 1. | 19. | 98. | 364. | 604. | 2686. |
| Cooling Degree Days (F) | 0. | 0. | 7. | 20. | 108. | 203. | 304. | 290. | 206. | 62. | 3. | 0. | 1203. |