| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.9 | 50.5 | 54.5 | 59.3 | 64.9 | 69.5 | 74.5 | 74.9 | 69.9 | 60.3 | 51.5 | 46.5 | 60.3 |
| Highest Mean Max. Temperature (F) | 52.2 | 54.8 | 58.6 | 63.0 | 69.8 | 75.1 | 80.5 | 79.2 | 75.0 | 64.1 | 57.0 | 49.8 | 80.5 |
| Year Highest Occurred | 1995 | 1991 | 1981 | 1987 | 1993 | 1992 | 1985 | 1997 | 1974 | 1987 | 1997 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 42.0 | 43.7 | 48.9 | 54.3 | 60.5 | 64.5 | 69.7 | 69.1 | 64.7 | 57.2 | 42.1 | 40.8 | 40.8 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1976 | 1978 | 1971 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 41.5 | 43.8 | 46.9 | 50.9 | 56.6 | 61.1 | 65.5 | 66.0 | 61.3 | 53.4 | 46.0 | 41.3 | 52.9 |
| Highest Mean Temperature (F) | 45.6 | 48.3 | 50.1 | 54.0 | 61.2 | 65.0 | 69.0 | 69.3 | 65.0 | 56.1 | 50.3 | 45.3 | 69.3 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1987 | 1993 | 1992 | 1998 | 1997 | 1994 | 1993 | 1995 | 1980 | 1997 |
| Lowest Mean Temperature (F) | 35.7 | 36.6 | 42.1 | 46.8 | 53.2 | 57.4 | 62.6 | 62.2 | 57.0 | 50.7 | 36.8 | 36.1 | 35.7 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1986 | 1973 | 1972 | 1972 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 36.0 | 37.1 | 39.2 | 42.5 | 48.2 | 52.7 | 56.4 | 57.1 | 52.6 | 46.4 | 40.4 | 36.1 | 45.4 |
| Highest Mean Min. Temperature (F) | 41.0 | 41.8 | 41.7 | 45.6 | 52.5 | 55.5 | 60.4 | 59.4 | 55.4 | 50.6 | 44.6 | 40.7 | 60.4 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1994 | 1993 | 1998 | 1998 | 1999 | 1979 | 1988 | 1995 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 29.3 | 29.5 | 35.3 | 38.6 | 45.4 | 50.0 | 54.2 | 53.9 | 49.2 | 43.1 | 31.4 | 30.8 | 29.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1982 | 1974 | 1976 | 1977 | 1973 | 1972 | 1972 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 5.24 | 4.09 | 3.92 | 2.75 | 2.03 | 1.55 | 0.93 | 1.16 | 1.61 | 3.24 | 5.67 | 6.06 | 38.25 |
| Highest Precipitation (in.) | 10.38 | 7.62 | 8.74 | 5.80 | 4.24 | 3.17 | 2.16 | 5.49 | 5.62 | 8.04 | 11.20 | 11.97 | 11.97 |
| Year Highest Occurred | 1986 | 1999 | 1997 | 1996 | 1977 | 1984 | 1978 | 1977 | 1978 | 1975 | 1983 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.60 | 0.54 | 1.32 | 0.87 | 0.57 | 0.12 | 0.11 | 0.10 | 0.00 | 0.29 | 0.50 | 1.22 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1979 | 1998 | 1982 | 1987 | 1975 | 1998 | 1993 | 1987 | 1976 | 1985 | 1993 |
| Heating Degree Days (F) | 729. | 593. | 564. | 423. | 266. | 131. | 52. | 50. | 139. | 362. | 571. | 735. | 4615. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 15. | 67. | 79. | 27. | 0. | 0. | 0. | 192. |