Frost Dates

&nbsp;Light freeze: &nbsp;29° to 32°F (-1.7° to 0°C)—tender plants are killed.
&nbsp;Moderate freeze: &nbsp;25° to 28°F (-3.9°&nbsp;to -2.2°C)—widely destructive to most vegetation.
&nbsp;Severe freeze: &nbsp;24°F (-4.4°C) and colder—heavy damage to most garden plants.

What are Frost Dates?

A frost date is the average date of the last light freeze in spring or the first light freeze in fall.

The classification of freeze temperatures is based on their effect on plants:

Light freeze: 29° to 32°F (-1.7° to 0°C)—tender plants are killed.
Moderate freeze: 25° to 28°F (-3.9° to -2.2°C)—widely destructive to most vegetation.
Severe freeze: 24°F (-4.4°C) and colder—heavy damage to most garden plants.

Note that these frost dates are only an estimate and the below resources may differ by several days on First and Last Frost Dates. Click on the link, enter your zip code and your approximate frost dates will be displayed:

Resources - Frost Dates:
Frost Dates Guide 1

Frost Dates Guide 2

Frost Dates - Utah