| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.9 | 51.0 | 55.4 | 61.0 | 67.3 | 71.9 | 77.4 | 77.7 | 72.4 | 61.6 | 51.6 | 46.1 | 61.7 |
| Highest Mean Max. Temperature (F) | 51.7 | 55.4 | 60.0 | 65.0 | 72.7 | 77.3 | 84.4 | 83.1 | 78.7 | 66.0 | 57.2 | 50.5 | 84.4 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1987 | 1992 | 1982 | 1985 | 1977 | 1974 | 1987 | 1997 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 41.8 | 43.7 | 50.0 | 56.2 | 62.4 | 67.1 | 70.4 | 72.2 | 66.7 | 58.7 | 42.4 | 40.5 | 40.5 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1972 | 1991 | 1971 | 1993 | 1976 | 1996 | 1997 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 40.8 | 43.5 | 47.0 | 51.4 | 57.1 | 62.0 | 66.4 | 66.6 | 61.7 | 52.9 | 45.1 | 40.4 | 52.9 |
| Highest Mean Temperature (F) | 44.5 | 47.7 | 50.3 | 54.3 | 60.6 | 65.0 | 69.4 | 70.4 | 65.8 | 55.7 | 49.3 | 44.5 | 70.4 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1992 | 1992 | 1982 | 1998 | 1977 | 1990 | 1988 | 1995 | 1979 | 1977 |
| Lowest Mean Temperature (F) | 34.1 | 35.1 | 42.8 | 47.3 | 53.6 | 58.5 | 62.5 | 62.5 | 58.1 | 50.4 | 35.5 | 35.2 | 34.1 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1975 | 1999 | 1971 | 1993 | 1973 | 1972 | 1972 | 1985 | 1985 | 1980 |
| Mean Min. Temperature (F) | 34.6 | 36.0 | 38.5 | 41.7 | 46.9 | 52.0 | 55.3 | 55.5 | 51.0 | 44.2 | 38.5 | 34.7 | 44.1 |
| Highest Mean Min. Temperature (F) | 39.3 | 40.0 | 41.2 | 44.9 | 50.9 | 54.1 | 59.2 | 59.0 | 57.2 | 49.5 | 43.2 | 38.8 | 59.2 |
| Year Highest Occurred | 1994 | 1991 | 1984 | 1994 | 1997 | 1989 | 1998 | 1997 | 1990 | 1988 | 1995 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 26.3 | 26.6 | 33.7 | 37.2 | 44.4 | 47.7 | 52.7 | 51.1 | 47.5 | 40.2 | 28.5 | 29.3 | 26.3 |
| Year Lowest Occurred | 1980 | 1989 | 1985 | 1982 | 1999 | 1976 | 1982 | 1973 | 1972 | 1972 | 1985 | 1985 | 1980 |
| Mean Precipitation (in.) | 5.30 | 4.47 | 4.08 | 2.87 | 2.06 | 1.74 | 0.88 | 1.20 | 1.75 | 3.37 | 6.06 | 5.81 | 39.59 |
| Highest Precipitation (in.) | 8.35 | 8.80 | 7.90 | 6.82 | 4.39 | 3.93 | 3.53 | 4.36 | 5.75 | 8.21 | 10.33 | 10.79 | 10.79 |
| Year Highest Occurred | 1990 | 1972 | 1997 | 1991 | 1984 | 1984 | 1983 | 1975 | 1978 | 1975 | 1999 | 1979 | 1979 |
| Lowest Precipitation (in.) | 0.83 | 0.37 | 1.09 | 0.67 | 0.40 | 0.16 | 0.00 | 0.02 | 0.00 | 0.31 | 0.99 | 1.86 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1992 | 1987 | 1984 | 1974 | 1993 | 1987 | 1976 | 1978 | 1984 |
| Heating Degree Days (F) | 752. | 602. | 561. | 409. | 249. | 111. | 40. | 37. | 128. | 374. | 598. | 763. | 4624. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 19. | 81. | 88. | 28. | 0. | 0. | 0. | 219. |