The current average 2-inch soil temperature across New Mexico is 82°F. Readings range from 60°F to 94°F, from 11 USDA and NOAA monitoring stations. Soil across New Mexico is right at the seasonal normal of 81°F for mid-August, based on 11 of 11 stations with historical records. New Mexico spans USDA hardiness zones 6a to 8b, cool-season grass country. Last updated August 16, 2026.
Summer conditions across New Mexico with soil averaging 82°F at 2 inches. Warm-season grasses are in peak growth; keep cool-season lawns mowed high and watered deep. The next application windows arrive in fall, starting with pre-emergent as soil falls back through 70°F.
New Mexico spans both grass families: cool-season lawns are more common toward the cooler, northern parts of the state and at elevation, warm-season lawns toward the warmer south.
For cool-season lawns (fescue, bluegrass, ryegrass), fall is the best time to plant grass seed in New Mexico, with spring the second choice: fall seedlings face less weed competition and mature before summer heat. The window opens as 2-inch soil falls back through 70°F, and germination slows sharply once soil drops below 50°F, typically around November 12.
Spring is the second choice: the window opens when soil first holds 50°F and narrows as soil passes 65°F, typically by April 11.
For warm-season lawns (bermuda, zoysia, St. Augustine), the best time to plant grass seed in New Mexico is late spring into early summer, when soil is warming and a full growing season lies ahead. The window opens when 2-inch soil reaches 65°F and keeps rising, and closes as soil cools back through 65°F, typically around October 14.
| Region | Typical spring window opens | Typical fall window opens | Stations |
|---|---|---|---|
| Eastern New Mexico | March 20 | October 1 | 4 |
| Central New Mexico | February 20 | October 13 | 4 |
| Western New Mexico | March 4 | September 28 | 3 |
Fall seeding also needs a stop date: new seedlings want about six weeks of growth before frost arrives. Your city page estimates the last safe seeding date from its nearest station: see when to plant in Albuquerque, when to plant in Santa Fe or when to plant in Las Cruces. Readings current through August 16, 2026: New Mexico averages 82°F at 2 inches right now; the Current Planting Conditions section above reads that number against the season.
Typical dates are computed from historical 2-inch soil temperature averages at 11 monitoring stations in New Mexico; your own window depends on your nearest station's readings.
Historical 2-inch soil temperature normals for New Mexico: the median across 11 in-state stations with multi-year records. Any given year runs ahead of or behind these values; the live average at the top of this page shows where this year stands.
| Month | Average 2-inch soil temperature |
|---|---|
| January | 38°F |
| February | 43°F |
| March | 53°F |
| April | 64°F |
| May | 72°F |
| June | 80°F |
| July | 83°F |
| August | 83°F |
| September | 76°F |
| October | 64°F |
| November | 49°F |
| December | 42°F |
Grass seed germination
Grass seed germination temperatures across New Mexico. Soil warmth varies by location, so check a city page for the live reading and what germinates there now.
| Grass species | Seeding soil temp (2 in) | Days |
|---|---|---|
| Kentucky bluegrass | 50–65°F | 14-30 |
| Tall fescue | 50–65°F | 7-12 |
| Perennial ryegrass | 50–65°F | 5-10 |
| Fine fescue | 50–65°F | 7-14 |
| Bermudagrass | 75–90°F | 10-30 |
For root-zone timing (fertilizer, aeration, weed control), see the 4-inch soil temperature for New Mexico. For accumulated-heat timing, see growing degree days for New Mexico. For how wet the ground is versus normal, see soil moisture for New Mexico. See the New Mexico soil temperature map for the full station view.
Interpolated from the latest 4-inch readings and refreshed daily.
| Station | 2" Temp | Last Reading |
|---|---|---|
| Adams Ranch #1 (Lincoln) | 75°F | 2026-08-16 |
| Crossroads (Lea) | 87°F | 2026-08-16 |
| Willow Wells (Lea) | 82°F | 2026-08-16 |
| Jornada Exp Range (Dona Ana) | 76°F | 2026-08-16 |
| Los Lunas PMC (Valencia) | 90°F | 2026-08-16 |
| Sevilleta (Socorro) | 85°F | 2026-08-16 |
| Alcalde (Rio Arriba) | 81°F | 2026-08-16 |
| Thoreau (McKinley) | 79°F | 2026-08-16 |
| Socorro 20 N | 94°F | 2026-08-16 |
| Los Alamos 13 W | 60°F | 2026-08-16 |
| Las Cruces 20 N | 88°F | 2026-08-16 |
Current 2-inch readings grouped along New Mexico's east-to-west axis. Regional spread matters for timing: the warm end of the state can open an application window a week or more before the cool end.
| Region | Avg 2" Temp | Range | Stations |
|---|---|---|---|
| Eastern New Mexico (Lea, Lincoln, Rio Arriba Counties) | 81°F | 75–87°F | 4 |
| Central New Mexico (Dona Ana, Socorro Counties) | 77°F | 60–88°F | 4 |
| Western New Mexico (McKinley, Valencia Counties) | 88°F | 79–94°F | 3 |
| City | ZIP | Current Temp |
|---|---|---|
| Alamogordo | 88310 | 76°F |
| Albuquerque | 87101 | 90°F |
| Artesia | 88210 | 82°F |
| Carlsbad | 88220 | 96°F* |
| Clovis | 88101 | 90°F |
| Deming | 88030 | 88°F |
| Espanola | 87532 | 81°F |
| Farmington | 87401 | 75°F |
| Gallup | 87301 | 79°F |
| Hobbs | 88240 | 87°F |
| Las Cruces | 88001 | 76°F |
| Los Alamos | 87544 | 60°F |
| Rio Rancho | 87124 | 90°F |
| Roswell | 88201 | 82°F |
| Ruidoso | 88345 | 75°F |
| Santa Fe | 87501 | 81°F |
| Silver City | 88061 | 84°F* |
Modeled estimate where no monitoring station is within 75 miles; all other readings are measured at USDA and NOAA stations.
Fall is the best time to overseed a thin lawn.
Core aeration relieves compaction, but timing decides whether the lawn recovers in a week or struggles for a month.
Brown patch and Pythium strike when humid nights hold above 68°F on lush, over-fertilized turf; dollar spot, red thread, and rust hit slow-growing lawns at 60-85°F.
Spring broadleaf timing for St.
The current average 2-inch soil temperature across New Mexico is 82°F. Readings range from 60°F to 94°F depending on location and elevation, from 11 USDA and NOAA monitoring stations. Soil across New Mexico is right at the seasonal normal of 81°F for mid-August, based on 11 of 11 stations with historical records.
Apply pre-emergent herbicide when soil at 2 inches reaches 55°F for several consecutive days. Timing varies across New Mexico, so check your city's page for station-specific readings and the pre-emergent timing recommendation.
New Mexico spans USDA hardiness zones 6a to 8b, cool-season grass country. For cool-season grasses (fescue, bluegrass), the fall window typically opens around October 6 and the spring window around March 2; for warm-season grasses (bermuda, zoysia), the window typically opens around April 11, based on historical 2-inch soil temperature averages at 11 in-state stations. Timing varies by location, so check your city's planting window for the dates specific to your area.