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 70615
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 70615 in zone 9a (the coldest night of a typical year: 20 to 25°F).
The nearest station, Moss Bluff, LA, is 8 miles from the ZIP's center: its last spring frost comes after March 2 in half of years and after March 26 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Moss Bluff, LA2 mi NNW | 8 mi | 25 ft | March 2 | March 26 | November 25 | – |
| Lake Charles, LALake Charles Regional Airport | 11 mi | 13 ft | February 14 | March 11 | December 7 | 9b |
| Lake Arthur, LA7 mi SW | 26 mi | 11 ft | February 10 | March 8 | December 11 | 9b |
| Jennings, LA | 27 mi | 25 ft | February 19 | March 13 | December 4 | 9a |
| Hackberry, LA8 mi SSW | 30 mi | 6 ft | February 3 | March 9 | December 24 | 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 Moss Bluff
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 30 | March 20 | February 22 | November 12 | October 28 |
| 32°F | March 26 | March 13 | March 2 | January 30 | November 25 | November 3 |
| 28°F (hard freeze) | March 13 | February 26 | February 11 | January 11 | December 10 | November 15 |
| 24°F | March 1 | February 6 | January 27 | December 25 | January 1 | December 1 |
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.