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 75115
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 75115 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, Dallas Redbird Airport, TX, is 6 miles from the ZIP's center: its last spring frost comes after March 6 in half of years and after March 26 in one year in ten. By the USDA's method its plant hardiness zone is 8b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Dallas Redbird Airport, TX | 6 mi | 658 ft | March 6 | March 26 | November 25 | 8b |
| Grand Prairie, TXJoe Pool Lake | 7 mi | 591 ft | March 20 | April 8 | November 13 | – |
| Waxahachie, TX | 12 mi | 626 ft | March 16 | April 3 | November 16 | – |
| Ferris, TX | 13 mi | 470 ft | March 12 | March 31 | November 19 | 8b |
| Arlington, TXArlington Municipal Airport | 14 mi | 630 ft | March 9 | March 28 | November 21 | 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 Dallas Redbird Airport
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 9 | March 28 | March 19 | February 28 | November 12 | October 27 |
| 32°F | March 26 | March 14 | March 6 | February 15 | November 25 | November 6 |
| 28°F (hard freeze) | March 12 | March 2 | February 22 | January 24 | December 9 | November 19 |
| 24°F | March 3 | February 15 | February 2 | January 1 | December 27 | December 2 |
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.