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 28134
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 28134 in zone 8a (the coldest night of a typical year: 10 to 15°F).
The nearest station, Charlotte, NC, is 10 miles from the ZIP's center: its last spring frost comes after March 30 in half of years and after April 14 in one year in ten. By the USDA's method its plant hardiness zone is 8a.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Charlotte, NCCharlotte Douglas Airport | 10 mi | 728 ft | March 30 | April 14 | November 3 | 8a |
| Rock Hill, SCRock Hill York County Airport | 12 mi | 669 ft | March 31 | April 15 | November 4 | 8a |
| Winthrop University, SC | 13 mi | 650 ft | March 27 | April 11 | November 5 | 8a |
| Monroe, NCMonroe Airport | 16 mi | 679 ft | March 31 | April 16 | November 5 | 8a |
| Gastonia, NCGastonia Municipal Airport | 17 mi | 797 ft | March 24 | April 10 | November 9 | 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 Charlotte
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 28 | April 17 | April 11 | March 26 | October 27 | October 15 |
| 32°F | April 14 | April 5 | March 30 | March 12 | November 3 | October 22 |
| 28°F (hard freeze) | April 3 | March 24 | March 17 | February 25 | November 14 | November 1 |
| 24°F | March 24 | March 13 | March 2 | February 4 | November 29 | November 11 |
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.