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How to Manage Pests

Home & garden
Agriculture
Natural environments
Exotic & invasive

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Degree-days
Interactive tools & models

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How to Manage Pests

Run Models and Calculate Degree-Days

text-only version

This degree-day calculator has two branches. Run preset models that have been recommended by UC Cooperative Extension, or specify the thresholds and method of calculation for any model. Use weather data from the UC IPM weather database, a file you supply, or data you enter online.

| Using this calculator | Reference degree-day tables | About degree-days |

Run models OR

Calculate any degree-days

Select an organism and preset thresholds

Thresholds

Enter lower

Enter upper (optional)

Method of calculation

Upper cutoff method (optional)

More information

Interactive models of pests, beneficials and plants

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /WEATHER/ddretrieve.html revised: August 9, 2007. Contact webmaster.