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 78414
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 78414 in zone 10a (the coldest night of a typical year: 30 to 35°F).
The nearest station, C C Botanical Gardens, TX, is 2 miles from the ZIP's center: its last spring frost comes after January 29 in half of years and after March 1 in one year in ten. By the USDA's method its plant hardiness zone is 9b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| C C Botanical Gardens, TX | 2 mi | 16 ft | January 29 | March 1 | December 24 | 9b |
| Corpus Christi Cabaniss Field, TX | 5 mi | 30 ft | January 15 | February 23 | December 30 | – |
| Corpus Christi Naval Air Station, TX | 6 mi | 18 ft | January 14 | February 20 | January 8 | – |
| Corpus Christi NWS, TX | 12 mi | 44 ft | January 31 | March 2 | December 22 | – |
| Corpus Christi, TXCorpus Christi International Airport | 12 mi | 45 ft | January 28 | February 28 | December 21 | 9b |
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 C C Botanical Gardens
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) | March 10 | February 26 | February 14 | January 11 | December 9 | November 16 |
| 32°F | March 1 | February 11 | January 29 | December 15 | December 24 | December 1 |
| 28°F (hard freeze) | February 16 | January 31 | January 10 | December 14 | January 1 | December 9 |
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.