Frost dates by ZIP code: The nearest NOAA stations to your ZIP, 1991-2020 normals
Enter a five-digit ZIP code. PlainClimate finds its center (Census Bureau 2024) and the five nearest NOAA stations with frost dates, and shows each station's last spring and first autumn 32°F dates with its distance and elevation.
Frost dates near ZIP 76311
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 76311 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Wichita Falls, TX, is 1 miles from the ZIP's center: its last spring frost comes after March 26 in half of years and after April 14 in one year in ten. By the USDA's method its plant hardiness zone is 8a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Wichita Falls, TXWichita Falls Municipal Airport | 1 mi | 1,017 ft | March 26 | April 14 | November 9 | 8a |
| Henrietta, TX | 21 mi | 930 ft | April 1 | April 17 | November 8 | – |
| Grandfield, OKGrandfield 3 mi W Mesonet | 23 mi | 1,122 ft | March 31 | April 18 | November 6 | – |
| Archer City, TX2 mi W | 27 mi | 1,001 ft | March 25 | April 13 | November 10 | – |
| Walters station, OK | 29 mi | 1,005 ft | April 1 | April 18 | November 5 | – |
Frost comes later in spring at higher and colder stations and earlier in low, open ground: prefer a station at a similar elevation to yours. Hardiness zone in the table: the USDA's rule (the average of each year's coldest night, 1991-2020) applied to the station's own record.
Every frost threshold at Wichita Falls
NOAA publishes the dates for several temperatures and odds. A 30% spring date means a 3-in-10 chance of a later frost (the convention almanacs use); 50% is the median; 10% the cautious date.
| Threshold | Spring, 10% | Spring, 30% | Spring, 50% | Spring, 90% | Autumn, 50% | Autumn, 10% |
|---|---|---|---|---|---|---|
| 36°F (light frost) | April 24 | April 15 | April 7 | March 22 | November 1 | October 18 |
| 32°F | April 14 | April 2 | March 26 | March 8 | November 9 | October 25 |
| 28°F (hard freeze) | April 1 | March 20 | March 12 | February 23 | November 18 | November 2 |
| 24°F | March 17 | March 8 | March 1 | February 5 | December 1 | November 12 |
Source: NOAA NCEI 1991-2020 annual normals; ZIP centers: Census Bureau 2024 Gazetteer; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. Autumn 10%: one year in ten has its first frost before this date.