Garden Climate for Palomar Mountain, CA 92060

Zone 9a · Last frost ~Apr 29 · Soil 54.6°F today (modeled) · See your place on the 2023 USDA zone map

Public NOAA/USDA data, updated 2026-10-16 18:57 UTC.

USDA Plant Hardiness Zone Map · Palomar Mountain focus

2023 USDA Plant Hardiness Zone Map around ZIP 92060, marker at Palomar Mountain, CA
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The map pixel at the marker shows 8b. The ZIP lookup table gives 9a for the whole ZIP area. Zone edges run through or near this ZIP.

USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture. Accessed from https://planthardiness.ars.usda.gov/. Rendered unaltered from the PRISM Group, Oregon State University GIS data (https://prism.oregonstate.edu, accessed 15 Oct 2026) with official zone colors. Roads (TIGER/Line 2023 primary roads), place names (2023 Gazetteer) and state lines (2023 cartographic boundaries 1:500k) are drawn on top. Source: U.S. Census Bureau.

Zone
9a
USDA 2023 · 20 to 25°F
Last frost
Apr 29
avg last frost (50%)
Soil temp Modeled
54.6°F
↓ 8.3° in 7 days
Chill hours
—
unavailable
Rain
—
since Oct 1 · not enough data

Frost dates for 92060

Last spring frost
Apr 29
50% odds
First fall frost
Nov 18
50% odds
Safer spring date
May 29
10% chance of later frost
Growing season
201
days (50%)

Earliest-risk fall date (10%): Oct 27.

NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal freeze probabilities (32F) · CA PALOMAR MTN OBSY (USC00046657) 7.1 km away 25 yrs of record · 233 ft higher than this ZIP

Newsletter · 92060

Frost alerts and planting reminders for 92060. Coming soon.

Ad strip · leaderboard 970×90 / 728×90

7-day forecast · High / Low / Rain / Frost / Wind

High wind: 1 day(s) with gusts ≥40 mph. Stake and protect transplants.
Fri 16
68° 57° gust 45 mph 💧4%
High wind
Sat 17
65° 53° gust 37 mph 💧4%
Clear
Sun 18
67° 53° gust 15 mph 💧1%
Clear
Mon 19
66° 47° gust 10 mph 💧6%
Clear
Tue 20
56° 43° gust 15 mph 💧59% · 0.05″
Rain
Wed 21
52° 42° gust 15 mph 💧70% · 0.70″
Rain
Thu 22
52° 42° gust 10 mph 💧33% · 0.10″
Clear

NOAA NWS api.weather.gov (SGX). Frost = low ≤32°F · High wind = gust ≥40 mph · 💧 = chance of precipitation and expected amount (NWS quantitative precipitation forecast; blank when NWS gives none) · Rain = chance ≥50%.

What to grow when · 92060

Calendar: San Diego County, mountains (900 m / ~3,000 ft and up). Planting months from University of Arizona Cooperative Extension Yavapai County Bulletin #51 'Yavapai County Vegetable Planting Dates' (an out-of-county analog; no San Diego-specific guide covers this area). Harvest months add typical days-to-harvest. This month also checks live soil temperature and the 7-day frost forecast. The harvest planner uses the same calendar. Rules: methodology.

Affiliate links (disclosed). Placeholders, no partners yet:Frost clothSoil thermometer

Questions about 92060

What USDA hardiness zone is 92060?

ZIP 92060 (Palomar Mountain, CA) is in USDA zone 9a (20 to 25°F average annual extreme minimum), per the 2023 USDA Plant Hardiness Zone Map.

When is the last frost in 92060?

Based on NOAA 1991–2020 normals at Ca Palomar Mtn Obsy (7.1 km away), the median last 32°F freeze is Apr 29. In 1 of 10 years it is after May 29. The median first fall freeze is Nov 18.

Nearby ZIP codes

92061 Pauma Valley 92082 Valley Center 92059 Pala 92070 Santa Ysabel 92086 Warner Springs 92027 Escondido

Sources for this page

  • Location: US Census Bureau 2023 Gazetteer, ZCTA internal point
  • Zone: USDA Plant Hardiness Zone Map 2023, ZIP datasets (USDA ARS + PRISM Climate Group, Oregon State University)
  • Frost: NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal freeze probabilities (32F) CA PALOMAR MTN OBSY (USC00046657) 7.1 km away 25 yrs of record · 233 ft higher than this ZIP
  • Forecast: NOAA National Weather Service api.weather.gov (7-day forecast + gridpoint wind gusts)
  • Soil: Open-Meteo forecast API soil model (non-commercial terms)
  • Chill: RuntimeError: not enough nearby data: no suitable hourly weather station within 25 km
  • Raw data: /data/zip/92060.json