| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.8 | 43.6 | 52.0 | 61.4 | 70.8 | 80.9 | 87.6 | 86.6 | 77.6 | 64.8 | 47.1 | 39.0 | 62.4 |
| Highest Mean Max. Temperature (F) | 47.3 | 54.1 | 58.9 | 70.3 | 79.0 | 88.8 | 93.8 | 93.5 | 84.0 | 69.5 | 62.0 | 48.3 | 93.8 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1987 | 1985 | 1988 | 1974 | 1983 | 1998 | 1999 | 1999 | 1979 | 1974 |
| Lowest Mean Max. Temperature (F) | 23.2 | 28.3 | 42.8 | 53.4 | 62.9 | 72.3 | 77.6 | 81.1 | 68.2 | 60.1 | 30.7 | 20.7 | 20.7 |
| Year Lowest Occurred | 1979 | 1978 | 1975 | 1983 | 1995 | 1982 | 1992 | 1992 | 1986 | 1971 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 24.3 | 29.3 | 37.0 | 46.2 | 56.0 | 65.5 | 71.7 | 70.1 | 60.2 | 48.4 | 33.9 | 25.8 | 47.4 |
| Highest Mean Temperature (F) | 33.5 | 38.7 | 43.8 | 52.8 | 61.1 | 73.2 | 75.5 | 76.4 | 67.4 | 51.3 | 44.9 | 34.1 | 76.4 |
| Year Highest Occurred | 1981 | 1999 | 1986 | 1981 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1999 | 1983 |
| Lowest Mean Temperature (F) | 9.2 | 16.5 | 29.7 | 40.2 | 50.9 | 59.4 | 64.3 | 65.0 | 55.4 | 45.4 | 19.1 | 8.2 | 8.2 |
| Year Lowest Occurred | 1979 | 1978 | 1975 | 1983 | 1983 | 1998 | 1992 | 1974 | 1974 | 1971 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 10.7 | 15.0 | 22.0 | 30.9 | 41.2 | 50.1 | 55.8 | 53.6 | 42.8 | 32.0 | 20.6 | 12.5 | 32.3 |
| Highest Mean Min. Temperature (F) | 19.8 | 23.9 | 28.8 | 35.7 | 47.0 | 57.5 | 59.3 | 59.2 | 50.7 | 36.0 | 27.7 | 20.0 | 59.3 |
| Year Highest Occurred | 1981 | 1999 | 1986 | 1981 | 1977 | 1988 | 1977 | 1983 | 1998 | 1998 | 1999 | 1999 | 1977 |
| Lowest Mean Min. Temperature (F) | -4.8 | 3.9 | 16.6 | 26.7 | 35.4 | 45.5 | 50.5 | 48.0 | 36.4 | 28.7 | 7.5 | -4.4 | -4.8 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1982 | 1983 | 1998 | 1971 | 1974 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.36 | 0.45 | 0.92 | 1.95 | 3.03 | 2.81 | 2.57 | 1.77 | 1.33 | 1.26 | 0.53 | 0.35 | 17.33 |
| Highest Precipitation (in.) | 0.79 | 1.29 | 2.20 | 6.30 | 6.45 | 6.31 | 8.05 | 4.99 | 3.41 | 4.66 | 1.54 | 0.98 | 8.05 |
| Year Highest Occurred | 1998 | 1987 | 1998 | 2000 | 1982 | 1999 | 1997 | 1996 | 1989 | 1998 | 1998 | 1994 | 1997 |
| Lowest Precipitation (in.) | 0.00 | 0.03 | 0.13 | 0.07 | 0.55 | 0.71 | 0.60 | 0.28 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1989 | 1996 | 1988 | 1987 | 1985 | 1996 | 1994 | 1975 | 1992 | 1999 | 1997 | 1979 | 1989 |
| Heating Degree Days (F) | 1263. | 999. | 869. | 566. | 291. | 89. | 15. | 32. | 191. | 516. | 935. | 1218. | 6984. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 12. | 104. | 222. | 191. | 47. | 0. | 0. | 0. | 576. |