Growing Degree Days Calculator
The time between your start date and end date cannot exceed 1 year.
Want to know if your season is ahead of or behind normal? The USA National Phenology Network's AGDD anomaly maps compare accumulated growing degree days to the 30-year average for your region. Use them alongside the eKonomics Growing Degree Days Calculator for additional context on seasonal crop development: Explore AGDD maps
What does GDD mean? Each crop requires exposure to a certain amount of Growing Degree Days (GDDs) or heat units to complete its life-cycle. For some crops, like corn and soybean, one can actually use GDDs to determine where a crop is in its development cycle. This information can be useful for determining when scouting should be done, and it can also allow one to determine when a crop is in an important growth stage.
See how your season compares to the average
Want to know if your season is ahead of or behind normal? The USA National Phenology Network's AGDD anomaly maps compare accumulated growing degree days to the 30-year average for your region. Use them alongside the eKonomics Growing Degree Days Calculator for additional context on seasonal crop development: Explore AGDD maps
Temperature data from: Agronomy and Environmental Sciences (AES)
