| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 68.0 | 68.5 | 68.9 | 72.7 | 74.0 | 78.3 | 82.9 | 84.6 | 83.1 | 78.9 | 73.4 | 68.8 | 75.2 |
| Highest Mean Max. Temperature (F) | 76.7 | 73.9 | 75.0 | 76.9 | 80.3 | 86.1 | 87.0 | 90.5 | 89.8 | 83.9 | 81.5 | 75.7 | 90.5 |
| Year Highest Occurred | 1976 | 1977 | 1988 | 1996 | 1997 | 1981 | 1984 | 1998 | 1984 | 1976 | 1977 | 1976 | 1998 |
| Lowest Mean Max. Temperature (F) | 63.2 | 64.4 | 64.5 | 66.2 | 68.9 | 73.0 | 78.0 | 80.1 | 76.8 | 71.9 | 68.1 | 64.0 | 63.2 |
| Year Lowest Occurred | 1995 | 1998 | 1991 | 1975 | 1995 | 1982 | 1987 | 1999 | 1986 | 2000 | 2000 | 1971 | 1995 |
| Mean Temperature (F) | 57.0 | 58.3 | 59.7 | 63.0 | 65.9 | 69.8 | 73.8 | 75.1 | 73.4 | 68.6 | 61.8 | 57.1 | 65.3 |
| Highest Mean Temperature (F) | 61.7 | 61.8 | 64.6 | 67.5 | 71.3 | 75.9 | 77.5 | 80.1 | 80.0 | 72.4 | 66.8 | 61.7 | 80.1 |
| Year Highest Occurred | 1986 | 1995 | 1978 | 1992 | 1997 | 1981 | 1984 | 1998 | 1984 | 1976 | 1977 | 1977 | 1998 |
| Lowest Mean Temperature (F) | 53.9 | 55.6 | 55.4 | 57.3 | 62.2 | 65.9 | 70.4 | 70.9 | 68.5 | 64.7 | 56.9 | 52.9 | 52.9 |
| Year Lowest Occurred | 1974 | 1990 | 1973 | 1975 | 1995 | 1999 | 1987 | 1999 | 1986 | 2000 | 1994 | 1971 | 1971 |
| Mean Min. Temperature (F) | 46.0 | 48.1 | 50.4 | 53.2 | 57.8 | 61.3 | 64.6 | 65.6 | 63.7 | 58.3 | 50.1 | 45.3 | 55.4 |
| Highest Mean Min. Temperature (F) | 50.5 | 52.4 | 56.5 | 58.0 | 62.2 | 65.6 | 67.9 | 69.8 | 70.2 | 62.5 | 54.8 | 52.5 | 70.2 |
| Year Highest Occurred | 1980 | 1995 | 1978 | 1992 | 1997 | 1981 | 1984 | 1983 | 1984 | 1987 | 1997 | 1977 | 1984 |
| Lowest Mean Min. Temperature (F) | 42.0 | 42.6 | 44.1 | 48.3 | 54.3 | 58.2 | 62.6 | 61.7 | 59.4 | 53.7 | 45.3 | 41.8 | 41.8 |
| Year Lowest Occurred | 1972 | 1974 | 1977 | 1971 | 1971 | 1999 | 1999 | 1999 | 1973 | 1971 | 1994 | 1974 | 1974 |
| Mean Precipitation (in.) | 2.95 | 3.01 | 2.43 | 0.60 | 0.23 | 0.08 | 0.02 | 0.10 | 0.24 | 0.40 | 1.12 | 1.76 | 12.94 |
| Highest Precipitation (in.) | 12.76 | 12.09 | 8.75 | 2.31 | 2.32 | 0.86 | 0.21 | 2.03 | 1.45 | 2.30 | 4.21 | 5.29 | 12.76 |
| Year Highest Occurred | 1995 | 1998 | 1983 | 1999 | 1977 | 1993 | 1986 | 1977 | 1976 | 2000 | 1985 | 1971 | 1995 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 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 | 1984 | 1997 | 1997 | 1997 | 2000 | 2000 | 2000 | 2000 | 1999 | 2000 | 2000 | 1976 |
| Heating Degree Days (F) | 267. | 205. | 186. | 99. | 39. | 5. | 0. | 0. | 1. | 16. | 128. | 265. | 1211. |
| Cooling Degree Days (F) | 3. | 5. | 10. | 28. | 55. | 135. | 260. | 302. | 244. | 119. | 20. | 5. | 1186. |