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 36112
The USDA's 2023 Plant Hardiness Zone Map puts ZIP 36112 in zone 8b (the coldest night of a typical year: 15 to 20°F).
The nearest station, Montgomery, AL, is 6 miles from the ZIP's center: its last spring frost comes after March 13 in half of years and after March 31 in one year in ten. By the USDA's method its plant hardiness zone is 8b.
| Station | Distance | Elevation | Last frost (median) | 1 in 10 after | First frost (median) | Hardiness zone |
|---|---|---|---|---|---|---|
| Montgomery, ALMontgomery Airport | 6 mi | 202 ft | March 13 | March 31 | November 13 | 8b |
| Montgomery (6 mi SW), AL | 12 mi | 225 ft | March 4 | March 23 | November 18 | – |
| Milstead, AL | 28 mi | 215 ft | March 25 | April 13 | November 8 | 8b |
| Highland Home #2, AL | 30 mi | 555 ft | March 12 | March 30 | November 18 | – |
| Highland Home (2 mi S), AL | 32 mi | 614 ft | March 4 | March 25 | November 26 | – |
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 Montgomery
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 16 | April 5 | March 29 | March 5 | November 3 | October 21 |
| 32°F | March 31 | March 20 | March 13 | February 20 | November 13 | October 31 |
| 28°F (hard freeze) | March 19 | March 8 | February 27 | January 30 | November 25 | November 8 |
| 24°F | March 7 | February 21 | February 7 | January 9 | December 14 | November 17 |
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.