| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 56.6 | 64.5 | 70.2 | 78.4 | 86.6 | 94.3 | 99.0 | 97.6 | 92.2 | 82.2 | 66.9 | 56.6 | 78.8 |
| Highest Mean Max. Temperature (F) | 62.9 | 71.2 | 77.0 | 86.2 | 93.6 | 100.2 | 102.9 | 101.5 | 97.5 | 87.9 | 73.7 | 63.3 | 102.9 |
| Year Highest Occurred | 2000 | 1991 | 1997 | 1987 | 1992 | 1981 | 1988 | 1998 | 1974 | 1978 | 1995 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 48.4 | 59.9 | 63.6 | 70.6 | 75.6 | 86.2 | 93.5 | 91.8 | 85.0 | 76.5 | 60.1 | 48.3 | 48.3 |
| Year Lowest Occurred | 1972 | 1971 | 1973 | 1983 | 1998 | 1998 | 1987 | 1976 | 1985 | 1984 | 1994 | 1985 | 1985 |
| Mean Temperature (F) | 46.6 | 52.3 | 56.9 | 62.6 | 69.8 | 76.5 | 81.1 | 79.7 | 75.0 | 65.7 | 53.3 | 45.5 | 63.8 |
| Highest Mean Temperature (F) | 52.3 | 56.3 | 62.5 | 69.0 | 76.6 | 81.0 | 85.2 | 82.7 | 79.7 | 70.5 | 59.1 | 52.4 | 85.2 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1987 | 1992 | 1981 | 1988 | 1992 | 1991 | 1991 | 1995 | 1977 | 1988 |
| Lowest Mean Temperature (F) | 39.9 | 47.7 | 52.6 | 56.2 | 62.4 | 71.1 | 76.1 | 74.8 | 69.0 | 60.9 | 47.5 | 40.4 | 39.9 |
| Year Lowest Occurred | 1972 | 1971 | 1973 | 1975 | 1998 | 1998 | 1987 | 1976 | 1986 | 1971 | 1994 | 1990 | 1972 |
| Mean Min. Temperature (F) | 36.5 | 40.0 | 43.5 | 46.7 | 52.9 | 58.7 | 63.2 | 61.8 | 57.7 | 49.1 | 39.7 | 34.4 | 48.7 |
| Highest Mean Min. Temperature (F) | 42.6 | 45.0 | 49.3 | 51.7 | 59.5 | 63.9 | 67.4 | 65.2 | 62.5 | 55.1 | 44.5 | 42.1 | 67.4 |
| Year Highest Occurred | 1995 | 1996 | 1993 | 1987 | 1997 | 1985 | 1988 | 1995 | 1991 | 1992 | 1995 | 1977 | 1988 |
| Lowest Mean Min. Temperature (F) | 29.9 | 35.0 | 36.3 | 41.5 | 47.7 | 54.0 | 58.7 | 57.8 | 52.4 | 43.5 | 33.5 | 26.1 | 26.1 |
| Year Lowest Occurred | 1975 | 1974 | 1977 | 1975 | 1977 | 1980 | 1987 | 1976 | 1986 | 1971 | 2000 | 1990 | 1990 |
| Mean Precipitation (in.) | 1.34 | 1.37 | 1.60 | 0.58 | 0.24 | 0.13 | 0.01 | 0.03 | 0.18 | 0.34 | 0.64 | 0.88 | 7.34 |
| Highest Precipitation (in.) | 3.86 | 5.78 | 5.78 | 2.66 | 2.15 | 2.00 | 0.10 | 0.47 | 1.57 | 1.76 | 1.95 | 2.81 | 5.78 |
| Year Highest Occurred | 1999 | 1998 | 1982 | 1988 | 1971 | 1998 | 1986 | 1983 | 1978 | 1974 | 1987 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.03 | 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 | 1972 | 1977 | 1972 | 1997 | 2000 | 1999 | 2000 | 1999 | 2000 | 1999 | 2000 | 2000 | 1972 |
| Heating Degree Days (F) | 571. | 357. | 265. | 143. | 47. | 2. | 0. | 0. | 4. | 86. | 354. | 605. | 2434. |
| Cooling Degree Days (F) | 0. | 0. | 14. | 69. | 194. | 347. | 500. | 455. | 302. | 106. | 3. | 0. | 1990. |