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 70812
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 70812 in zone 9a (the coldest night of a typical year: 20 to 25°F).
The nearest station, Baton Rouge, LA, is 3 miles from the ZIP's center: its last spring frost comes after February 25 in half of years and after March 19 in one year in ten. By the USDA's method its plant hardiness zone is 9a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Baton Rouge, LABaton Rouge Metro Airport | 3 mi | 64 ft | February 25 | March 19 | November 26 | 9a |
| Lsu Ben-Hur Farm, LA | 10 mi | 21 ft | February 28 | March 21 | November 26 | 9a |
| Brusly, LA2 mi W | 12 mi | 20 ft | February 28 | March 21 | November 24 | 9a |
| Carville (2 mi SW), LA | 21 mi | 25 ft | February 9 | March 10 | December 13 | 9b |
| New Roads, LA5 mi NE | 22 mi | 45 ft | February 19 | March 14 | December 5 | 9a |
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 Baton Rouge
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 1 | March 21 | March 13 | February 20 | November 13 | October 30 |
| 32°F | March 19 | March 7 | February 25 | January 29 | November 26 | November 7 |
| 28°F (hard freeze) | March 8 | February 19 | February 6 | January 4 | December 11 | November 19 |
| 24°F | February 23 | February 3 | January 24 | December 25 | January 2 | December 4 |
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.