Heating Degree Day Calculator

Supply the daily max and min instead of the mean, and the mean is their average.
Commonly 10 C or 50 F for maize, and 18.3 C or 65 F for heating and cooling degree days.
Caps the daily maximum before averaging, as many crop models require. 0 disables it.
Degree units for the day
8
Degree Day Calculator
Accumulated over the period
8
Mean temperature used
10
Type
heating degree days
Worked out from Growing degree days accumulate max(mean - base, 0); heating degree days accumulate max(base - mean, 0); cooling degree days accumulate max(mean - base, 0). and 1 other source.

How this is worked out

2 steps
  1. Mean temperature used: 10
  2. Heating degree units = max(base - mean, 0) = max(18 - 10, 0) = 8

Results are general information, not financial, tax, legal, medical or engineering advice.