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 75009
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 75009 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, McKinney Municipal Airport, TX, is 14 miles from the ZIP's center: its last spring frost comes after March 17 in half of years and after April 5 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| McKinney Municipal Airport, TX | 14 mi | 586 ft | March 17 | April 5 | November 15 | – |
| McKinney, TXMcKinney Municipal Airport | 14 mi | 580 ft | March 18 | April 7 | November 11 | 8a |
| Pilot Point, TXPilot Point Island Du Boi | 15 mi | 690 ft | March 24 | April 13 | November 16 | – |
| Denton (2 mi SE), TX | 23 mi | 630 ft | March 13 | March 31 | November 20 | 8b |
| Richardson, TX | 24 mi | 678 ft | March 7 | March 29 | November 21 | – |
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 McKinney Municipal 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 19 | April 7 | March 31 | March 9 | November 3 | October 20 |
| 32°F | April 5 | March 26 | March 17 | February 27 | November 15 | October 27 |
| 28°F (hard freeze) | March 24 | March 12 | March 4 | February 15 | November 30 | November 6 |
| 24°F | March 13 | March 3 | February 24 | January 26 | December 18 | November 22 |
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.