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New Mexico · NOAA station USW00003062

Frost dates for Los Alamos 13 W, NM

At Los Alamos 13 W, the median last spring frost (32°F) is Jun 10 and the median first fall frost is Sep 13, for a typical growing season of 94 days. For a 90% chance that the last frost has passed, wait until Jun 24. Nearby ZIP codes are in USDA hardiness zones 6b to 7b.

  • Jun 10Last spring frost (median)50% chance of 32°F after this date
  • Jun 24Safer planting date10% chance of 32°F after this date
  • Sep 13First fall frost (median)50% chance of 32°F by this date
  • 94 daysGrowing season (median)between 32°F freezes

Planting date calculator

Pick how much frost risk you accept and how many weeks before or after the last frost your seed packet says to plant.

From your seed packet, e.g. “start 6 weeks before last frost”.

–Last spring frost
–First fall frost
–Your planting date
–Hardiness zone

Last spring frost dates

The chance that the temperature drops to the threshold after each date.

Los Alamos 13 W: last spring freeze by temperature
Temperature90% chance later50% chance later10% chance later
36°FJun 12Jun 25Jul 10
32°FMay 30Jun 10Jun 24
28°FMay 15May 29Jun 10
24°FApr 30May 14May 30

First fall frost dates

The chance that the temperature has dropped to the threshold by each date.

Los Alamos 13 W: first fall freeze by temperature
Temperature10% chance by50% chance by90% chance by
36°FAug 14Sep 1Sep 13
32°FSep 1Sep 13Sep 25
28°FSep 10Sep 23Oct 5
24°FSep 20Oct 3Oct 17

Growing season length

Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.

Los Alamos 13 W: growing season by temperature
Temperature9 in 10 years at least5 in 10 years at least1 in 10 years at least
36°F42 days65 days85 days
32°F75 days94 days111 days
28°F99 days118 days135 days
24°F122 days142 days161 days

Chance of a freeze in any year

Los Alamos 13 W: probability of at least one day at or below each temperature
TemperatureChance per year
36°F100%
32°F100%
28°F100%
24°F100%

Closest ZIP codes (each is closer to another station)

ZIP codes near Los Alamos 13 W with 2023 USDA hardiness zones
ZIPHardiness zoneAvg. extreme lowDistance
870256b-5 to 0°F9 km
870447a0 to 5°F20 km
875447a0 to 5°F23 km
870837a0 to 5°F28 km
875477b5 to 10°F29 km
870247a0 to 5°F29 km
870727a0 to 5°F30 km
870126b-5 to 0°F32 km

Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.

About this station

  • NOAA station ID USW00003062, at 35.8583, -106.5214, elevation 2657 m (8,716 ft).
  • Data quality: Representative (10+ years), 16 years of freeze data.
  • Average days per year at or below 32°F: 228.
  • Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.

Nearby weather stations

Sources

Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.

All New Mexico stations · How frost dates are calculated