Frost dates in Texas

Across Texas's 387 NOAA stations with a frost every year, the typical last spring frost ranges from February 14 at Amistad Dam (1,160 feet above sea level) to April 28 at Dalhart (3,980 feet above sea level). The middle station's date is March 18.

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Last frost across Texas

The frost-free season runs from 170 days at Dalhart 6 SW to 297 days at Hallettsville 2 N.

The station with the latest frost sits about 2,800 feet higher than the one with the earliest.

At 89 stations a freezing night doesn't come every winter, so the dates there apply only to the years that have one.

At 1 station, frost comes in fewer than 1 year in 10, too rarely for frost dates.

These are typical dates: in half of springs the last frost comes later. Each place's page, and each ZIP code lookup, also gives the late-year date, after which only 1 spring in 10 has a frost. That's the safer date for tender plants.

Frost dates for Texas's larger places

Typical (1-in-2) dates. Each place's page has the early and late years, a planting calendar and a printable planner. Zones are for the ZIP code nearest each place's center. *Not every winter has a freeze here; the date is for the years that do.

Hardiness zones in Texas

Texas's 2,493 ZIP codes in the USDA list fall in zones 6b to 10b: 6b (under 1 percent), 7a (4 percent), 7b (3 percent), 8a (13 percent), 8b (36 percent), 9a (22 percent), 9b (17 percent), 10a (4 percent) and 10b (under 1 percent). Compared with the 2012 map, 66 percent of them moved to a warmer half zone (6 by a full zone or more), 34 percent stayed the same and 2 moved to a colder one.

A hardiness zone is about the coldest night of winter, which decides which shrubs, trees and perennials survive. Frost dates are about spring and fall, which decide when to plant. You need both. Read more about what the zones mean and what changed in 2023.

Every NOAA station in Texas

All 477 stations in Texas with frost statistics in NOAA's 1991 to 2020 normals, from A to Z. Station names are usually a town, an airport, or a distance and direction from a town. Find one near you and at a similar elevation.

*Not every winter has a freeze at this station; the date is for the years that do.

Typical (1-in-2) dates at 32°F. For the early and late years, and a planting calendar built from your own dates, look up your ZIP code.