| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 44.5 | 49.0 | 53.5 | 58.8 | 64.6 | 69.8 | 75.7 | 77.0 | 71.2 | 60.1 | 49.6 | 44.1 | 59.8 |
| Highest Mean Max. Temperature (F) | 51.3 | 56.5 | 59.2 | 63.7 | 70.2 | 75.6 | 84.2 | 83.1 | 77.6 | 67.5 | 56.1 | 48.4 | 84.2 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1989 | 1992 | 1982 | 1985 | 1986 | 1974 | 1987 | 1995 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 38.1 | 42.9 | 48.1 | 54.4 | 59.0 | 64.5 | 64.7 | 70.2 | 63.5 | 55.6 | 37.0 | 37.8 | 37.0 |
| Year Lowest Occurred | 1972 | 1989 | 1971 | 1975 | 1991 | 1971 | 1993 | 1976 | 1978 | 1984 | 1985 | 1983 | 1985 |
| Mean Temperature (F) | 38.1 | 41.2 | 44.4 | 48.7 | 53.9 | 58.9 | 63.3 | 63.8 | 58.8 | 50.4 | 42.7 | 38.1 | 50.2 |
| Highest Mean Temperature (F) | 44.0 | 47.3 | 48.7 | 52.1 | 57.9 | 62.6 | 67.7 | 67.7 | 62.4 | 53.1 | 48.4 | 42.2 | 67.7 |
| Year Highest Occurred | 1995 | 1991 | 1992 | 1992 | 1997 | 1992 | 1985 | 1986 | 1995 | 1987 | 1997 | 1991 | 1985 |
| Lowest Mean Temperature (F) | 30.7 | 34.4 | 39.9 | 44.2 | 50.3 | 55.0 | 58.1 | 59.6 | 54.5 | 46.7 | 31.3 | 31.4 | 30.7 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1975 | 1974 | 1971 | 1993 | 1973 | 1985 | 1984 | 1985 | 1985 | 1980 |
| Mean Min. Temperature (F) | 31.7 | 33.4 | 35.3 | 38.5 | 43.2 | 47.9 | 50.9 | 50.5 | 46.3 | 40.6 | 35.8 | 32.1 | 40.5 |
| Highest Mean Min. Temperature (F) | 37.4 | 38.5 | 38.3 | 43.5 | 47.7 | 51.0 | 55.2 | 54.0 | 50.7 | 45.0 | 41.0 | 36.7 | 55.2 |
| Year Highest Occurred | 1995 | 1992 | 1993 | 1992 | 1997 | 1992 | 1998 | 1997 | 1995 | 1988 | 1997 | 1991 | 1998 |
| Lowest Mean Min. Temperature (F) | 23.1 | 25.9 | 30.8 | 34.0 | 40.0 | 44.9 | 47.9 | 45.9 | 43.0 | 37.7 | 25.5 | 24.7 | 23.1 |
| Year Lowest Occurred | 1980 | 1989 | 1985 | 1975 | 1980 | 1979 | 1980 | 1973 | 1983 | 1984 | 1985 | 1985 | 1980 |
| Mean Precipitation (in.) | 5.92 | 4.93 | 4.68 | 4.09 | 3.42 | 2.87 | 1.57 | 1.67 | 2.40 | 4.01 | 7.13 | 6.00 | 48.69 |
| Highest Precipitation (in.) | 10.34 | 10.20 | 7.46 | 7.30 | 6.46 | 5.26 | 5.24 | 5.85 | 6.77 | 7.93 | 12.60 | 10.91 | 12.60 |
| Year Highest Occurred | 1990 | 1996 | 1988 | 1991 | 1984 | 1993 | 1983 | 1977 | 1978 | 1975 | 1999 | 1996 | 1999 |
| Lowest Precipitation (in.) | 0.85 | 0.20 | 2.26 | 1.69 | 0.94 | 0.50 | 0.00 | 0.15 | 0.01 | 1.03 | 1.96 | 1.19 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1998 | 1982 | 1987 | 1984 | 1986 | 1993 | 1987 | 1976 | 1985 | 1984 |
| Heating Degree Days (F) | 834. | 666. | 640. | 491. | 345. | 194. | 97. | 92. | 205. | 454. | 670. | 834. | 5522. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 9. | 45. | 53. | 16. | 0. | 0. | 0. | 124. |