Welcome to the Corn Growing Degree Day (GDD) decision support tool.
- Climate Risks - Identify the likelihood of early and late frosts/freezes.
- Activity Planning - Consider corn hybrid estimated physiological maturity requirements, along with GDD projections when making seed purchasing and other growing season decisions.
- Marketing - Look at historical and projected GDD when considering forward pricing and crop insurance purchases.
While this tool is not meant to be a crystal ball, data and information derived from the tool can be used to make helpful inferences about current conditions, especially when combined with personal experience and localized knowledge. Please note that data is currently limited to states within the U2U project area plus Kentucky & Tennessee.
- Select the blue question mark icon in the top right corner of the tab section for instructions and other information.
-
Use white user location icon (
) in upper right hand corner of map to zoom to current location of computer being used.
-
Use the layer icon (
) in the upper right hand corner of the map to control your viewing options.
- Tested with browsers: Internet Explorer 11 & later; FireFox 27.0 & later; Chrome 33.0 & later; Safari 6.1.6 & later.
- Choose your GDD start date, freeze temperature threshold and corn maturity rating
- Add up to 3 years from 1981 to previous year for comparison
- Adjust the variation of historical GDD and temperature data visible on the graph
- Add or remove silking, black layer and freeze dates for a comprehensive growing cycle snapshot
- Select the blue question mark icon in the top right corner of the tab section for instructions and other information.
- Print this chart or export it in a variety of formats using the Chart Options feature.
- Add or remove visual elements by clicking on their corresponding legend icons.
- Zoom in by clicking above or below the plotted data and dragging your cursor diagonally in either direction to select the magnified region. Use "Reset zoom" button in upper right of graph to zoom out.
User Input Summary
Location (lat, long): Tippecanoe Co., IN
Location (county, state): Tippecanoe Co., IN
GDD Start Date: Tippecanoe Co., IN
Today's Date: Tippecanoe Co., IN
Latest Data Available: September 30, 2015
Corn Maturity Days: Tippecanoe Co., IN
Growing Degree Days to Silking: Tippecanoe Co., IN
Growing Degree Days to Black Layer: Tippecanoe Co., IN
Corn Growing Degree Day (GDD) Results __________30-Year History (1991 - 2020)_________________
GDD Accumulation (September 30 - September 30)99710501020
V2 DateSeptember 30 - September 30 - September 30--
V4 DateSeptember 30 - September 30 - September 30--
V6 DateSeptember 30 - September 30 - September 30--
V8 DateSeptember 30 - September 30 - September 30--
V10 DateSeptember 30 - September 30 - September 30--
Silking Date (Estimated (Earliest - Latest))September 30 - September 30 - September 30September 30September 30
Black Layer Date (Estimated (Earliest - Latest))September 30 (Estimated)September 30September 30
Freeze Results
Last Spring FreezeSeptember 30September 30
Freeze Probability after May 1September 30
First Fall FreezeSeptember 30September 30
Freeze Probability before Black LayerSeptember 30
** = Not available since, GDD start date is after today’s date; use information under 30-year history- Select the blue question mark icon in the top right corner of the tab section for instructions and other information.
U2U Corn Growing Degree Day Animations
The following time-lapse animations are visual representations of annual GDD accumulations.
Click the play button to start chosen animation.
The following is an animation for 2015.
The following is an animation for 2013.
The following is an animation for 2012.
The following is an animation for 2002.