Chad Hart, Larry Biehl, Roger Elmore, Chris Panza, Brian Raub, Dennis Todey, Melissa Widhalm
AgClimate View is your source for historical climate and crop yield data for the U.S. Corn Belt. This product let's you plot local monthly temperature and precipitation variation back to 1980, track county crop yields and trends, and consider crop yields in the context of monthly temperature, precipitation and growing degree day (GDD50) data.
Climate data are retrieved from the Applied Climate Information System (ACIS), a quality-controlled historical climate database developed and maintained by the NOAA Regional Climate Centers (RCCs). All climate stations in ACIS identified as currently collecting data (end date = 999) are included in AgClimate ViewDST regardless of the station's length of record or number of missing data points. We have found that some stations in ACIS contain no data although they are labeled as currently collecting data. If this type of station is selected, AgClimate View will automatically redirect you to another nearby station
Growing Degree Day (GDD) data displayed in AgClimate View are calculated using a base temperature of 50F and no upper limit. For corn-specific GDD (86/50), please visit our Corn GDD product.
Stress Degree Day (SDD) data displayed in AgClimate View are calculated using a 90F threshold.
Climate Averages and Variation
The Monthly Climate Averages displayed on the Climate Average tab are pulled directly from the ACIS database. The ACIS database uses the National Climatic Data Center (NCDC) 1981-2010 averages. NCDC applies a number of quality adjustments to account for missing data, station moves, equipment changes, and other factors that can influence the climate record. Therefore, the climate averages might not be exactly equal to the 30-year average as calculated from the observed daily data in ACIS.
Climate Variations displayed on the Climate Average tab are based on the maximum and minimum monthly average values in the ACIS database. The period of record can go back as far as 1981. The actual period of observations available for an individual station are shown in the chart legend.
Crop Yields and Trends
Historical (1980 - last year) county-level corn and soybean yield data are provided by the USDA National Agricultural Statistics Service (NASS) Quick Stats Database. Yield trends are calculated as a straight linear trend of county yield data from 1980-2010).
Climate products and tools are developed by the High Plains Regional Climate Center (HPRCC) and its partner Regional Climate Centers to provide users with a means to routinely access recent weather and climate data. While applied research has demonstrated that the use of such data in decision making can reduce risk and lower a user's cost, near-real-time data are preliminary in nature and sometimes contain errors. Although care is taken to remove known errors, it is possible that some data will change after receipt of written records and final quality control steps. Users are therefore warned to consider any negative impact that errant data might have on their business and use preliminary data and information at their own risk.
The user assumes the entire risk related to the use of information on HPRCC webpages. HPRCC provides such information "as is,", and in no event will HPRCC be liable to a user or to any third party for any direct, indirect, incidental, consequential, special or exemplary damages or lost profit resulting from any use or misuse of information provided through HPRCC.