Crop (corn) heat units (ESRI REST)

View metadata and access the original ESRI REST file: Crop (corn) heat units.

Format

ESRI REST

Access

file-only

Publisher-reported update

2025-07-21

Crop Heat Units (CHU) are calculated on a daily basis, using the maximum and minimum temperatures in order to account for a crop’s negative response to higher temperatures. The formula used to calculate the CHU value for a day is: (1.8 × (Minimum Temperature − 4.4) + 3.33 × (Maximum Temperature − 10) − 0.084 × (Maximum Temperature − 10)²) ÷ 2.0 CHU values are only accumulated during the Growing Season, April 1 through October 31.

Access original file