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 38122
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 38122 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Memphis Weather Office, TN, is 7 miles from the ZIP's center: its last spring frost comes after March 29 in half of years and after April 13 in one year in ten.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Memphis Weather Office, TN | 7 mi | 310 ft | March 29 | April 13 | November 5 | – |
| Memphis, TNMemphis International Airport | 8 mi | 254 ft | March 16 | April 4 | November 16 | 8a |
| Germantown, TN4 mi SE | 12 mi | 320 ft | March 22 | April 9 | November 7 | 8a |
| West Memphis station, AR | 15 mi | 215 ft | March 19 | April 7 | November 10 | 8a |
| Olive Branch, MS | 15 mi | 385 ft | March 26 | April 11 | November 6 | 8a |
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 Memphis Weather Office
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 25 | April 15 | April 9 | March 23 | October 27 | October 15 |
| 32°F | April 13 | April 4 | March 29 | March 9 | November 5 | October 25 |
| 28°F (hard freeze) | April 2 | March 22 | March 15 | February 26 | November 17 | November 2 |
| 24°F | March 20 | March 11 | March 3 | February 6 | December 1 | November 10 |
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.