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 75056
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 75056 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, Richardson, TX, is 11 miles from the ZIP's center: its last spring frost comes after March 7 in half of years and after March 29 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Richardson, TX | 11 mi | 678 ft | March 7 | March 29 | November 21 | – |
| Grapevine, TXGrapevine Dam | 12 mi | 585 ft | March 14 | April 3 | November 17 | 8a |
| Dallas, TXDallas Fort Worth Airport | 14 mi | 560 ft | March 8 | March 26 | November 24 | 8b |
| Denton (2 mi SE), TX | 14 mi | 630 ft | March 13 | March 31 | November 20 | 8b |
| Dallas Love Field, TX | 16 mi | 440 ft | March 2 | March 19 | November 29 | 8b |
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 Richardson
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 11 | March 31 | March 21 | March 2 | November 10 | October 23 |
| 32°F | March 29 | March 14 | March 7 | February 18 | November 21 | November 2 |
| 28°F (hard freeze) | March 12 | March 3 | February 24 | January 27 | December 4 | November 14 |
| 24°F | March 4 | February 18 | February 7 | January 4 | December 23 | November 26 |
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.