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 37764
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 37764 in zone 7b (the coldest night of a typical year: 5 to 10°F).
The nearest station, Sevierville, TN, is 3 miles from the ZIP's center: its last spring frost comes after April 6 in half of years and after April 21 in one year in ten. By the USDA's method its plant hardiness zone is 7b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Sevierville, TN | 3 mi | 899 ft | April 6 | April 21 | October 29 | 7b |
| Jefferson City, TN | 13 mi | 1,108 ft | April 24 | May 13 | October 17 | – |
| Morristown Weather Office, TN | 18 mi | 1,320 ft | March 31 | April 18 | November 4 | 7b |
| Knoxville Experiment Station, TN | 20 mi | 830 ft | April 11 | April 29 | October 28 | 7b |
| Gatlinburg, TN2 mi SW | 20 mi | 1,454 ft | April 17 | May 2 | October 25 | 7b |
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 Sevierville
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) | May 5 | April 25 | April 19 | April 4 | October 21 | October 9 |
| 32°F | April 21 | April 11 | April 6 | March 23 | October 29 | October 16 |
| 28°F (hard freeze) | April 9 | April 2 | March 27 | March 8 | November 7 | October 25 |
| 24°F | April 1 | March 22 | March 14 | February 20 | November 20 | November 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.