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 70128
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 70128 in zone 9b (the coldest night of a typical year: 25 to 30°F).
The nearest station, New Orleans Lakefront Airport, LA, is 5 miles from the ZIP's center: its last spring frost comes after January 22 in half of years and after February 23 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 |
|---|---|---|---|---|---|---|
| New Orleans Lakefront Airport, LA | 5 mi | 9 ft | January 22 | February 23 | January 5 | 9b |
| Chalmette, LA | 7 mi | 3 ft | February 10 | March 8 | December 17 | – |
| Terrytown, LA3 mi S | 11 mi | 10 ft | February 1 | March 6 | December 31 | 9b |
| New Orleans Audubon, LA | 14 mi | 20 ft | January 24 | February 23 | January 2 | 9b |
| St Bernard, LA | 14 mi | 5 ft | February 4 | March 6 | December 15 | – |
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 New Orleans Lakefront 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) | March 7 | February 17 | February 4 | January 5 | December 26 | November 30 |
| 32°F | February 23 | February 1 | January 22 | December 28 | January 5 | December 13 |
| 28°F (hard freeze) | February 11 | January 28 | January 18 | December 26 | January 11 | December 23 |
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.