When to plant in Alamogordo, NM
USDA Zone 8aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Alamogordo, New Mexico — all computed from Alamogordo's nearest NOAA weather station.
With about 254 frost-free days, Alamogordo supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. In zone 8a, Alamogordo supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Alamogordo is now 12 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
ALAMOGORDO · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Alamogordo’s own odds, recorded at ALAMOGORDO.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 10 | Mar 25 | Mar 8 | Oct 25 | Nov 8 | Nov 21 |
| 32°F | Mar 31 | Mar 9 | Feb 18 | Nov 3 | Nov 18 | Dec 3 |
| 28°F | Mar 17 | Feb 18 | Jan 26 | Nov 14 | Nov 29 | Dec 14 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Alamogordo, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 22 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Alamogordo planting FAQ
When is the last spring frost in Alamogordo, NM?
Plan for the last spring frost in Alamogordo around March 9 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Alamogordo, NM?
The first fall frost in Alamogordo typically arrives around November 18 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Alamogordo in?
Alamogordo is in USDA hardiness zone 8a. In zone 8a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Alamogordo?
Alamogordo has about 254 frost-free days — a long growing season — between the average last spring frost (March 9) and first fall frost (November 18).
When should I plant tomatoes in Alamogordo?
For Alamogordo, sow tomatoes indoors about January 12–January 26 and move the seedlings out around March 16, after the last spring frost.
Never miss a window in Alamogordo
An email when it’s time to start seeds, transplant, and sow — timed to Alamogordo’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Las Cruces · 99 km
- Chaparral · 102 km
- Fort Bliss · 122 km
- El Paso · 123 km
- Sunland Park · 132 km
- Horizon City · 136 km
- Socorro · 141 km
- Artesia · 144 km
Frost dates recorded at ALAMOGORDO, 4 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Alamogordo, NM — Frost Dates & Zone 8a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00290199. Retrieved from https://blissgarden.com/new-mexico/alamogordo.