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First and Last Frost Dates

Knowing when to expect frost is a huge factor in figuring out what to plant and when to plant it. Use this frost chart as a guideline for planning your spring and fall gardens.

Knowing when to expect frost is a huge factor in figuring out what to plant and when to plant it. Use this frost chart as a guideline for planning your spring and fall gardens.

The frost chart below is organized by USDA Hardiness Zone, but understand that these dates are approximated based on years of regional weather data. In most cases, the first and last frost will occur within two weeks of the date listed, but wacky weather patterns can result in a very early frost or late frost. Use the chart as a guide for planting, but count on your local weather forecast to plan frost protection measures.

USDA Hardiness ZoneFirst Frost DateLast Frost Date
1July 15thJune 15th
2August 15thMay 15th
3September 15thMay 15th
4September 15thMay 15th
5October 15thApril 15th
6October 15thApril 15th
7October 15thApril 15th
8November 15thMarch 15th
9December 15thFebruary 15th
10December 15thJanuary 31st (sometimes earlier)
11No frost.No frost.
USDA Hardiness ZoneFirst Frost DateLast Frost Date
1July 15thJune 15th
2Autust 15thMay 15th
3September 15thMay 15th
4September 15thMay 15th
5October 15thApril 15th
6October 15thApril 15th
7October 15thApril 15th
8November 15thMarch 15th
9December 15thFebruary 15th
10December 15thJanuary 31st (sometimes earlier)
11No frost.No frost.

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