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Calcimator

Degree Day Calculator

Accumulated degree days from daily temperature data using the single-sine method for predicting pest development stages.

Inputs

Results

Degree-days per day

20

Total accumulated DD

280

Average daily temperature (°F)70
Effective temperature above base (°F)20
Estimated pest generations0.56
Days to first generation25
How to Use This Calculator
  1. Enter Daily high temperature (°F), Daily low temperature (°F), and Base development threshold (°F).
  2. Set Upper cutoff temperature (°F) and Number of days.
  3. Review Degree-days per day and Total accumulated DD.
  4. Use Average daily temperature (°F) and Effective temperature above base (°F) to inform your decision.
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