When is My First and Last Frost Date?

Netherlands, Lisse, Tulips covered by frost
Frans Lemmens / Getty Images

The chart below shows the last and first frost dates for each USDA Hardiness Zone. This information is useful both in terms of knowing when to sow seeds as well as figuring out how late in the season you can plant perennials, trees, and shrubs.

Please note that the dates on this chart are approximate. Most years, the first and last frost will fall within two weeks of the date on the chart, but some years, we get a very early frost or a late snow storm that throws the dates off.

Use your discretion (and your local weather forecast!) along with this chart to plan your seed starting and planting.

First and Last Frost Dates, by Hardiness Zone

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.