National Weather Service first and second order station data summarized by station. Data is available for the 61-90 period or for the period of record. There are averages and extremes of temperature, precipitation, snowfall, and snowdepth, and averages of cooling and heating degree days. Many more graphical and tabular products are also available. National Agricultural Statistics Service crop yield data from 1972-1996 for dryland and irrigated acreage.
Data are available at the county, district, and state level.
Information includes acres intended for planting, acres harvested, yield per harvested acre, and total production for corn, sorghum, soybeans, and wheat. Historical U.S. Weather Data. National Climatic Data Center. Global Historical Fields. Department of the Navy - Department of Commerce.