| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 61.4 | 63.9 | 66.3 | 72.2 | 76.5 | 82.1 | 85.4 | 85.7 | 84.1 | 78.1 | 67.3 | 61.5 | 73.7 |
| Highest Mean Max. Temperature (F) | 69.7 | 71.4 | 75.1 | 78.3 | 87.8 | 91.0 | 91.6 | 91.5 | 92.4 | 85.4 | 77.0 | 69.5 | 92.4 |
| Year Highest Occurred | 1976 | 1977 | 1997 | 1987 | 1997 | 1981 | 1996 | 1998 | 1997 | 1999 | 1995 | 1976 | 1997 |
| Lowest Mean Max. Temperature (F) | 56.6 | 58.3 | 57.5 | 64.4 | 67.3 | 75.3 | 77.2 | 80.6 | 74.8 | 72.9 | 59.4 | 54.8 | 54.8 |
| Year Lowest Occurred | 1995 | 1993 | 1991 | 1983 | 1998 | 1991 | 1994 | 1989 | 1986 | 1972 | 1994 | 1971 | 1971 |
| Mean Temperature (F) | 48.9 | 51.3 | 53.2 | 56.7 | 60.6 | 64.8 | 67.5 | 67.7 | 66.1 | 60.9 | 52.8 | 48.2 | 58.2 |
| Highest Mean Temperature (F) | 52.0 | 54.5 | 57.2 | 60.6 | 67.3 | 70.3 | 71.1 | 70.5 | 70.9 | 63.6 | 59.3 | 52.5 | 71.1 |
| Year Highest Occurred | 1986 | 1995 | 1978 | 1992 | 1997 | 1981 | 1996 | 1998 | 1984 | 1999 | 1995 | 1977 | 1996 |
| Lowest Mean Temperature (F) | 45.5 | 47.1 | 48.1 | 51.6 | 55.5 | 60.4 | 63.2 | 64.8 | 60.3 | 57.2 | 46.6 | 43.1 | 43.1 |
| Year Lowest Occurred | 1982 | 1989 | 1991 | 1975 | 1998 | 1991 | 1994 | 1989 | 1986 | 1981 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 36.3 | 38.6 | 40.1 | 41.1 | 44.6 | 47.5 | 49.5 | 49.6 | 48.1 | 43.6 | 38.3 | 34.9 | 42.7 |
| Highest Mean Min. Temperature (F) | 44.3 | 44.1 | 45.6 | 44.8 | 47.9 | 50.5 | 52.6 | 52.6 | 50.8 | 48.5 | 42.4 | 42.0 | 52.6 |
| Year Highest Occurred | 1995 | 1996 | 1978 | 1990 | 1992 | 1992 | 1995 | 1990 | 1983 | 1979 | 1997 | 1983 | 1995 |
| Lowest Mean Min. Temperature (F) | 29.7 | 34.1 | 34.6 | 37.3 | 41.7 | 44.7 | 47.0 | 46.9 | 45.8 | 38.5 | 33.8 | 27.1 | 27.1 |
| Year Lowest Occurred | 1976 | 1989 | 1977 | 1975 | 1999 | 1994 | 1989 | 1985 | 1986 | 1971 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 10.29 | 9.74 | 7.51 | 2.77 | 1.04 | 0.23 | 0.11 | 0.15 | 0.48 | 2.17 | 6.13 | 7.06 | 47.68 |
| Highest Precipitation (in.) | 26.51 | 27.98 | 22.61 | 8.62 | 6.00 | 1.11 | 1.66 | 1.73 | 2.47 | 6.76 | 16.50 | 24.51 | 27.98 |
| Year Highest Occurred | 1995 | 1998 | 1983 | 1983 | 1998 | 1995 | 1974 | 1976 | 1977 | 1975 | 1983 | 1996 | 1998 |
| Lowest Precipitation (in.) | 0.31 | 0.29 | 0.06 | 0.13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 0.06 | 0.00 |
| Year Lowest Occurred | 1976 | 1997 | 1988 | 1973 | 1987 | 1986 | 2000 | 1998 | 1997 | 1995 | 1986 | 1989 | 1987 |
| Heating Degree Days (F) | 501. | 386. | 367. | 257. | 167. | 67. | 23. | 13. | 54. | 148. | 368. | 520. | 2871. |
| Cooling Degree Days (F) | 0. | 0. | 1. | 6. | 29. | 62. | 99. | 96. | 86. | 20. | 1. | 0. | 400. |