| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 50.1 | 53.7 | 58.0 | 65.2 | 73.9 | 82.2 | 89.7 | 89.3 | 83.3 | 72.9 | 56.6 | 50.5 | 68.8 |
| Highest Mean Max. Temperature (F) | 58.0 | 64.2 | 65.7 | 75.9 | 82.8 | 87.1 | 94.6 | 93.4 | 91.2 | 81.5 | 64.8 | 59.1 | 94.6 |
| Year Highest Occurred | 1984 | 1991 | 1988 | 1987 | 1992 | 1977 | 1984 | 1986 | 1991 | 1988 | 1995 | 1989 | 1984 |
| Lowest Mean Max. Temperature (F) | 44.2 | 44.1 | 51.0 | 57.1 | 62.1 | 74.5 | 84.0 | 80.6 | 73.8 | 65.5 | 46.6 | 43.4 | 43.4 |
| Year Lowest Occurred | 1993 | 1998 | 1983 | 1975 | 1998 | 1980 | 1993 | 1976 | 1986 | 1984 | 1994 | 1972 | 1972 |
| Mean Temperature (F) | 39.2 | 41.6 | 44.7 | 50.2 | 57.6 | 64.8 | 70.5 | 69.2 | 63.9 | 55.5 | 44.4 | 39.6 | 53.4 |
| Highest Mean Temperature (F) | 43.4 | 48.3 | 49.3 | 55.7 | 64.2 | 68.6 | 74.8 | 72.3 | 68.6 | 61.1 | 50.3 | 43.5 | 74.8 |
| Year Highest Occurred | 1986 | 1995 | 1986 | 1990 | 1992 | 2000 | 1994 | 1998 | 1991 | 1988 | 1995 | 1989 | 1994 |
| Lowest Mean Temperature (F) | 34.7 | 37.2 | 40.7 | 43.5 | 51.3 | 58.7 | 65.8 | 64.0 | 58.2 | 51.1 | 37.5 | 33.8 | 33.8 |
| Year Lowest Occurred | 1993 | 1989 | 1991 | 1975 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1972 | 1972 |
| Mean Min. Temperature (F) | 28.3 | 29.4 | 31.3 | 35.1 | 41.3 | 47.4 | 51.3 | 49.1 | 44.5 | 38.0 | 32.2 | 28.6 | 38.0 |
| Highest Mean Min. Temperature (F) | 36.1 | 34.2 | 35.1 | 39.6 | 45.7 | 51.0 | 55.6 | 52.2 | 48.5 | 41.2 | 38.2 | 34.8 | 55.6 |
| Year Highest Occurred | 1998 | 2000 | 1993 | 1990 | 1992 | 1986 | 1994 | 2000 | 1998 | 1979 | 1997 | 1995 | 1994 |
| Lowest Mean Min. Temperature (F) | 23.6 | 23.8 | 26.5 | 29.9 | 37.6 | 42.9 | 47.4 | 46.3 | 41.7 | 33.9 | 26.4 | 20.3 | 20.3 |
| Year Lowest Occurred | 1972 | 1990 | 1976 | 1975 | 1988 | 1980 | 1983 | 1973 | 1972 | 1971 | 1985 | 1990 | 1990 |
| Mean Precipitation (in.) | 11.39 | 10.38 | 9.50 | 4.14 | 2.55 | 0.99 | 0.34 | 0.36 | 1.35 | 3.22 | 7.90 | 9.16 | 61.28 |
| Highest Precipitation (in.) | 39.20 | 27.48 | 27.57 | 9.76 | 12.99 | 3.39 | 3.03 | 2.04 | 5.49 | 10.77 | 23.84 | 31.64 | 39.20 |
| Year Highest Occurred | 1995 | 1998 | 1983 | 1982 | 1990 | 1995 | 1974 | 1976 | 1978 | 1982 | 1984 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.42 | 0.67 | 0.07 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.86 | 0.09 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1988 | 1985 | 1992 | 1979 | 1994 | 1998 | 1999 | 1978 | 1995 | 1989 | 1992 |
| Heating Degree Days (F) | 801. | 657. | 631. | 449. | 248. | 80. | 16. | 16. | 103. | 303. | 618. | 789. | 4711. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 18. | 73. | 186. | 147. | 70. | 7. | 0. | 0. | 503. |