| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.6 | 41.1 | 46.9 | 54.8 | 63.4 | 74.0 | 82.0 | 81.1 | 70.5 | 59.4 | 44.6 | 38.2 | 57.8 |
| Highest Mean Max. Temperature (F) | 48.7 | 51.8 | 55.8 | 66.3 | 69.5 | 86.0 | 87.1 | 87.8 | 79.3 | 67.2 | 59.0 | 47.2 | 87.8 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1987 | 1987 | 1988 | 1988 | 1971 | 1979 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Max. Temperature (F) | 20.8 | 24.6 | 40.6 | 44.7 | 57.4 | 63.7 | 73.8 | 75.9 | 60.6 | 54.2 | 30.9 | 24.9 | 20.8 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1995 | 1998 | 1992 | 1987 | 1986 | 1971 | 1985 | 1978 | 1979 |
| Mean Temperature (F) | 25.9 | 29.0 | 34.4 | 41.6 | 49.8 | 58.5 | 65.0 | 64.1 | 54.7 | 45.1 | 32.9 | 26.6 | 44.0 |
| Highest Mean Temperature (F) | 37.0 | 38.1 | 42.3 | 49.5 | 54.7 | 67.3 | 69.1 | 69.7 | 61.6 | 52.0 | 44.0 | 35.8 | 69.7 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1987 | 1988 | 1989 | 1971 | 1990 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Temperature (F) | 8.9 | 11.9 | 28.3 | 33.7 | 45.7 | 51.4 | 58.0 | 59.3 | 47.5 | 40.2 | 18.8 | 13.5 | 8.9 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1975 | 1998 | 1993 | 1987 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 14.1 | 16.8 | 21.9 | 28.3 | 36.2 | 43.0 | 47.9 | 47.0 | 38.9 | 30.8 | 21.1 | 15.0 | 30.1 |
| Highest Mean Min. Temperature (F) | 25.9 | 24.8 | 28.8 | 32.6 | 39.9 | 48.6 | 51.8 | 51.6 | 45.9 | 36.7 | 29.0 | 24.3 | 51.8 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1994 | 1988 | 1998 | 1971 | 1998 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -3.1 | -0.8 | 15.8 | 22.7 | 32.4 | 39.0 | 42.1 | 42.1 | 32.8 | 25.6 | 6.7 | 1.4 | -3.1 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1986 | 1998 | 1993 | 1985 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.48 | 0.46 | 0.86 | 1.51 | 2.04 | 1.47 | 1.34 | 0.99 | 1.42 | 1.28 | 0.72 | 0.52 | 13.09 |
| Highest Precipitation (in.) | 1.53 | 1.83 | 2.37 | 3.85 | 7.63 | 3.70 | 3.97 | 4.11 | 3.71 | 3.61 | 1.77 | 1.64 | 7.63 |
| Year Highest Occurred | 1972 | 1986 | 1980 | 1971 | 1978 | 1992 | 1975 | 1972 | 1982 | 1975 | 1985 | 1978 | 1978 |
| Lowest Precipitation (in.) | 0.02 | 0.02 | 0.16 | 0.06 | 0.53 | 0.15 | 0.16 | 0.20 | 0.06 | 0.08 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1986 | 1990 | 1978 | 1985 | 1973 | 1978 | 1996 | 1978 | 1979 | 1984 | 1999 | 1986 | 1999 |
| Heating Degree Days (F) | 1215. | 1009. | 948. | 704. | 472. | 226. | 88. | 107. | 328. | 617. | 965. | 1191. | 7870. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 32. | 85. | 77. | 18. | 0. | 0. | 0. | 213. |