USDA zone 8a in New Mexico
USDA plant hardiness zone 8a covers 30 locations across New Mexico (average annual extreme minimum 10 to 15 °F): Albuquerque, NM, Alma, NM, Animas, NM, Atoka, NM, City of the Sun, NM, Faywood, NM, and 24 more. Average last spring frost across this group ranges March 12 (Picacho Hills) to May 6 (Alma), and growing seasons run 164–243 days (Alma to Hot Springs Landing) — even within one state, because hardiness sets winter survival, not planting dates. The table below gives every New Mexico location's own frost dates; the printable planting calendar uses Jal, this group's median-season location.
- USDA zone
- 8a10 to 15 °F
- Last frost range
- Mar 12–May 6avg, 32°F
- First frost range
- Oct 18–Nov 15avg, 32°F
- Growing season range
- 164–243days
Locations in this group
Every location below shares this zone and a nearby weather station, but keeps its own frost dates — find your town for its own numbers, or use the ZIP planner on the home page for an instant personalized answer.
| Location | Also covers | Nearest station | Last frost | First frost | Season (days) |
|---|---|---|---|---|---|
| Albuquerque | — | Albuquerque Intl Ap | Apr 6 | Nov 3 | 208 |
| Alma | — | Glenwood | May 6 | Oct 18 | 164 |
| Animas | Playas | Animas 3ese | Apr 2 | Nov 7 | 218 |
| Atoka | Loco Hills | Artesia 6s | Apr 11 | Oct 29 | 198 |
| City of the Sun | — | Columbus | Mar 18 | Nov 11 | 237 |
| Faywood | — | Faywood | Apr 21 | Oct 31 | 191 |
| Hachita | — | Antelope Wells | Apr 16 | Oct 30 | 195 |
| High Rolls | — | Mtn Park | Apr 30 | Oct 21 | 173 |
| Hillsboro | — | Hillsboro | Apr 23 | Oct 23 | 183 |
| Hobbs | North Hobbs | Hobbs | Mar 28 | Nov 10 | 225 |
| Holloman AFB | Boles Acres | White Sands Natl Mon | Apr 22 | Oct 22 | 183 |
| Hot Springs Landing | — | Elephant Butte Dam | Mar 13 | Nov 15 | 243 |
| Hurley | — | White Signal | Apr 23 | Oct 26 | 185 |
| Jal * | Eunice | Ochoa | Apr 4 | Nov 6 | 217 |
| La Hacienda | — | Deming | Apr 7 | Nov 3 | 208 |
| Las Palomas | — | Truth Or Consequences | Mar 30 | Nov 5 | 220 |
| Lordsburg | — | Lordsburg 4 Se | Apr 27 | Oct 25 | 179 |
| Malaga | Loco Hills, Mentone | Waste Isolt'n Pilot Plt | Apr 6 | Nov 2 | 210 |
| Malaga | — | Carlsbad | Mar 17 | Nov 12 | 238 |
| Monument | — | Hobbs 13w | Mar 28 | Nov 13 | 230 |
| Oasis | Salem, Arrey, Garfield, Placitas | Caballo Dam | Mar 25 | Nov 6 | 224 |
| Orogrande | — | Orogrande | Mar 24 | Nov 7 | 225 |
| Picacho Hills | — | State Univ | Mar 12 | Nov 13 | 241 |
| Rincon | — | Jornada Exp Range | Apr 27 | Oct 23 | 178 |
| Rodeo | San Simon | Portal 4 Sw | May 3 | Oct 25 | 174 |
| Santa Teresa | Chamberino | Santa Teresa Ap | Mar 23 | Nov 11 | 231 |
| Truth or Consequences | — | Truth Or Consequence Ap | Mar 22 | Nov 9 | 230 |
| Tularosa | — | Tularosa | Apr 5 | Nov 4 | 212 |
| Whites | — | Carlsbad Cavern City Ap | Mar 27 | Nov 7 | 223 |
| Whites | — | Carlsbad Caverns | Apr 2 | Nov 11 | 223 |
* Jal is this group's median-season location — the calendar below is computed from its data.
Data: NOAA NCEI U.S. Climate Normals 1991–2020 (public domain) and USDA Plant Hardiness Zone Map 2023. Planting windows synthesized from U.S. Cooperative Extension guides.
Planting calendar (Jal, representative)
Computed from Jal's average frost dates — the median-season location in this New Mexicozone 8a group. hatched = start seeds indoors, solid green = plant out, teal = a fall sowing, and the terracotta dot marks the estimated first harvest. Ranges are extension-guide planning guidance, not guarantees — your own location's dates may run a week or two earlier or later (see the table above).
- Start indoors
- Plant out
- Fall sowing
- First harvest
| Crop | Frost tolerance | Start indoors | Plant out | First harvest | Fall planting | Season fit |
|---|---|---|---|---|---|---|
| Tomato | Tender | Feb 7 – Feb 21 | Apr 11 – Apr 18 | Jun 10 – Jun 30 | — | matures comfortably |
| Pepper | Very tender | Jan 24 – Feb 7 | Apr 18 – Apr 25 | Jun 17 – Jul 17 | — | matures comfortably |
| Cucumber | Tender | Mar 7 – Mar 14 | Apr 11 – Apr 18 | May 31 – Jun 20 | — | matures comfortably |
| Summer squash / zucchini | Tender | — | Apr 11 – Apr 18 | May 26 – Jun 10 | — | matures comfortably |
| Bush bean | Tender | — | Apr 11 – Apr 18 | May 31 – Jun 10 | Sep 7 – Sep 17 | matures comfortably |
| Sweet corn | Tender | — | Apr 4 – Apr 18 | Jun 3 – Jul 3 | — | matures comfortably |
| Basil | Very tender | Feb 21 – Mar 7 | Apr 11 – Apr 18 | May 11 – May 26 | — | matures comfortably |
| Lettuce | Half-hardy | Feb 21 – Mar 7 | Mar 7 – Mar 21 | Apr 21 – May 6 | Aug 24 – Sep 8 | matures comfortably |
| Pea | Hardy | — | Feb 21 – Mar 7 | Apr 17 – May 2 | Aug 14 – Aug 29 | matures comfortably |
| Spinach | Hardy | — | Feb 21 – Mar 7 | Apr 2 – Apr 12 | Sep 3 – Sep 13 | matures comfortably |
| Carrot | Half-hardy | — | Mar 14 – Mar 21 | May 13 – Jun 2 | Aug 4 – Aug 24 | matures comfortably |
| Broccoli | Half-hardy | Feb 7 – Feb 21 | Mar 7 – Mar 21 | May 1 – May 21 | Aug 9 – Aug 29 | matures comfortably |
Which crops fit this growing season
Using Jal's own 217-day growing season (32°F, NOAA 1991–2020 median) against each crop's real days-to-maturity range: 12 of 12 crops mature here with comfortable margin. A different location in the table above with a longer or shorter season will get a different mix — the ZIP planner on the home page gives your own.
Frost & freeze dates (Jal)
From NOAA's 1991–2020 Climate Normals at station USC00296281. The median (p50) is the average date; the 90%-safe column is the date the freeze has passed in about 9 years out of 10 — the conservative date to plant after or harvest before.
| Threshold | Last spring — avg | Last spring — 90%-safe | First fall — avg | First fall — 90%-safe | Season (days) |
|---|---|---|---|---|---|
| 36°F | Apr 17 | May 1 | Oct 29 | Nov 10 | 194 |
| 32°F (freeze) | Apr 4 | Apr 23 | Nov 6 | Nov 21 | 217 |
| 28°F | Mar 17 | Apr 9 | Nov 16 | Dec 1 | 241 |
| 24°F | Mar 1 | Mar 24 | Nov 27 | Dec 13 | 268 |
Growing degree days
Growing degree days (GDD) accumulate warmth above a base temperature over the year — a better predictor of crop development than the calendar alone. This group's median GDD (base 50°F) across all 30 locations is 5,071; Jal's own reading is shown below.
| Model | °F·days | Used for |
|---|---|---|
| Base 50°F (warm-season) | 5,341 | standard warm-season base (tomato, corn, beans) |
| Base 40°F (cool-season) | 8,382 | cool-season crops (brassicas, greens) |
Hardiness zone 8a in New Mexico
Zone 8a means an average annual extreme minimum winter temperature of about 10 to 15 °F on the USDA's 2023 map — the number that tells you which perennials, shrubs, and trees reliably survive an average winter here. It does not set your planting dates, which come from the frost calendar above. New Mexico spans 8 hardiness zones in this dataset — see all New Mexico locations for the full range, including zones5a, 5b, 6a, 6b, 7a, 7b, 8b.
Explore zone 8a in other states at zone 8a, or see all USDA hardiness zones.
Frequently asked questions
- What does USDA hardiness zone 8a mean in New Mexico?
- Zone 8a means an average annual extreme minimum winter temperature of 10 to 15 °F — the standard USDA measure of which perennials survive winter. 30 locations in New Mexico fall in this zone. It does not set planting dates; see the frost calendar below for that.
- Where in New Mexico's zone 8a is the growing season longest?
- Hot Springs Landing runs the longest season on this page at about 243 days; Alma is shortest at about 164 days — they share the same hardiness zone, but they sit at different weather stations, so their frost calendars differ.
- When should I plant tomatoes in New Mexico's zone 8a?
- Using Jal's frost dates (this page's median-season location): start seeds indoors about Feb 7 – Feb 21, then transplant outside about Apr 11 – Apr 18. Your own location in the table above may differ by a week or two — use the ZIP planner on the home page for your exact station's dates.
- Does every location in New Mexico's zone 8a have the same frost dates?
- No — they do not all share a weather station, so frost dates vary by a week or more across the 30 locations listed (see the table above for each location's own dates).
Sources & method
Frost, freeze, growing-season, and growing-degree-day figures are NOAA NCEI U.S. Climate Normals 1991–2020, one reading per location's own nearest station (see the table above). The hardiness zone is the USDA Plant Hardiness Zone Map 2023, matched to each location's ZIP. Planting windows are computed by counting from the average last and first frost using per-crop offsets synthesized from U.S. Cooperative Extension guides — the full method and citations are on the methodology page.