New Mexico Frost Dates
Published: February 1, 2026 · Updated: April 23, 2026
Last Spring Frost
February 15
Zone 8a
First Fall Frost
December 1
Zone 8a
Frost-Free Season
289 days
Late February to Early December
Lawn Care Timing for New Mexico
Vegetable Garden Timing for New Mexico
Frost Dates by City in New Mexico
Frequently Asked Questions
What is the last frost date in New Mexico?
The average last spring frost in New Mexico (zone 8a) is February 15. Dates vary by city and elevation. Find your specific city below for exact dates.
When is it safe to plant tomatoes in New Mexico?
Transplant tomato seedlings outdoors after February 15 — the average last frost date for zone 8a. Start seeds indoors November (for winter garden). Wait 2 weeks after last frost for extra safety.
When should I overseed my lawn in New Mexico?
The prime overseeding window in New Mexico is October 15–November 15. This ensures 6 weeks of warm soil for germination before the first fall frost on December 1.
When should I apply winteriser in New Mexico?
Apply winteriser fertiliser by December. Your first fall frost of December 1 is the hard deadline — apply at least 2–3 weeks before.
What USDA zone is New Mexico?
New Mexico contains USDA zones 7a, 8a. Each zone has different frost dates and growing seasons. Find your city below for your specific zone.