| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 55.5 | 59.3 | 63.1 | 70.1 | 79.4 | 88.7 | 95.3 | 94.1 | 88.9 | 78.5 | 63.3 | 55.9 | 74.3 |
| Highest Mean Max. Temperature (F) | 62.5 | 67.6 | 69.2 | 79.1 | 88.2 | 93.7 | 101.4 | 98.4 | 96.2 | 87.0 | 71.5 | 63.8 | 101.4 |
| Year Highest Occurred | 1984 | 1991 | 1988 | 1987 | 1992 | 1985 | 1988 | 1996 | 1991 | 1991 | 1995 | 1989 | 1988 |
| Lowest Mean Max. Temperature (F) | 48.7 | 51.8 | 57.0 | 61.5 | 65.6 | 80.7 | 90.6 | 84.6 | 81.3 | 71.7 | 55.4 | 47.1 | 47.1 |
| Year Lowest Occurred | 1973 | 1998 | 1991 | 1975 | 1998 | 1998 | 1983 | 1976 | 1986 | 1984 | 1994 | 1972 | 1972 |
| Mean Temperature (F) | 44.4 | 47.7 | 50.8 | 55.9 | 63.8 | 72.1 | 77.9 | 76.4 | 71.4 | 62.3 | 50.3 | 44.2 | 59.8 |
| Highest Mean Temperature (F) | 48.0 | 53.0 | 55.0 | 62.3 | 70.1 | 77.5 | 83.2 | 79.4 | 77.1 | 68.6 | 55.8 | 47.7 | 83.2 |
| Year Highest Occurred | 1984 | 1991 | 1972 | 1987 | 1992 | 1977 | 1988 | 1971 | 1991 | 1991 | 1976 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 39.9 | 43.5 | 47.1 | 49.5 | 55.1 | 66.5 | 73.1 | 70.9 | 66.0 | 58.3 | 42.8 | 37.6 | 37.6 |
| Year Lowest Occurred | 1973 | 1994 | 1977 | 1975 | 1998 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1972 | 1972 |
| Mean Min. Temperature (F) | 33.2 | 36.1 | 38.5 | 41.7 | 48.1 | 55.5 | 60.4 | 58.7 | 53.8 | 46.1 | 37.2 | 32.4 | 45.1 |
| Highest Mean Min. Temperature (F) | 39.8 | 40.6 | 44.1 | 45.5 | 53.0 | 61.4 | 65.0 | 62.1 | 57.9 | 51.8 | 43.6 | 38.4 | 65.0 |
| Year Highest Occurred | 1995 | 1992 | 1978 | 1990 | 1973 | 1977 | 1988 | 1990 | 1991 | 1987 | 1981 | 1981 | 1988 |
| Lowest Mean Min. Temperature (F) | 29.3 | 31.2 | 33.6 | 37.5 | 44.2 | 51.1 | 55.5 | 55.0 | 50.4 | 42.1 | 30.1 | 25.7 | 25.7 |
| Year Lowest Occurred | 1976 | 1989 | 1977 | 1975 | 1977 | 1980 | 1999 | 1993 | 1993 | 1998 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 4.50 | 3.86 | 3.24 | 1.11 | 0.86 | 0.45 | 0.11 | 0.22 | 0.30 | 1.18 | 2.41 | 3.07 | 21.31 |
| Highest Precipitation (in.) | 20.21 | 16.52 | 11.08 | 3.47 | 5.28 | 2.73 | 0.84 | 4.20 | 3.14 | 3.41 | 8.17 | 10.30 | 20.21 |
| Year Highest Occurred | 1995 | 1998 | 1983 | 1983 | 1998 | 1998 | 1974 | 1976 | 1989 | 1982 | 1983 | 1983 | 1995 |
| Lowest Precipitation (in.) | 0.10 | 0.02 | 0.10 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1971 | 1972 | 1973 | 1976 | 1994 | 1999 | 2000 | 1999 | 1995 | 1995 | 1989 | 1976 |
| Heating Degree Days (F) | 639. | 484. | 441. | 288. | 135. | 18. | 1. | 0. | 18. | 151. | 445. | 648. | 3268. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 15. | 97. | 232. | 399. | 354. | 210. | 67. | 2. | 0. | 1376. |