Garden Climate for San Diego, CA 92179

Zone 10b · Frost-free in most years · Soil 71.1°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 · San Diego focus

2023 USDA Plant Hardiness Zone Map around ZIP 92179, marker at San Diego, CA
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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
10b
USDA 2023 · 35 to 40°F
Last frost
None
frost-free ≥9 of 10 yrs
Soil temp Modeled
71.1°F
↓ 8.6° in 7 days
Chill hours
—
starts Nov 1
Rain
1.04″
since Oct 1 · normal 0.17″

Frost dates for 92179

Frost-free in most years. No 32F freeze in at least 9 of 10 years at this station (NCEI reports no freeze dates; growing season = 365 days).

NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal freeze probabilities (32F) · CA SAN DIEGO LINDBERGH FLD GSN (USW00023188) 3.2 km away 27 yrs of record · about the same elevation

Newsletter · 92179

Frost alerts and planting reminders for 92179. Coming soon.

Ad strip · leaderboard 970×90 / 728×90

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

High wind: 2 day(s) with gusts ≥40 mph. Stake and protect transplants.
Fri 16
90° 71° gust 59 mph 💧8%
High wind
Sat 17
88° 65° gust 46 mph 💧8%
High wind
Sun 18
86° 64° gust 18 mph 💧0%
Clear
Mon 19
81° 62° gust 18 mph 💧8%
Clear
Tue 20
72° 59° gust 25 mph 💧67% · 0.05″
Rain
Wed 21
69° 57° gust 24 mph 💧67% · 0.44″
Rain
Thu 22
68° 56° gust 18 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 · 92179

Calendar: San Diego County, coastal (guide Regions 1-2). Planting months from UC Master Gardeners of San Diego County; Master Gardener Association of San Diego County. 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 92179

What USDA hardiness zone is 92179?

ZIP 92179 (San Diego, CA) is in USDA zone 10b (35 to 40°F average annual extreme minimum), per the 2023 USDA Plant Hardiness Zone Map.

When is the last frost in 92179?

The nearest NOAA normals station (Ca San Diego Lindbergh Fld Gsn, 3.2 km) records no 32°F freeze in at least 9 of 10 years (1991–2020).

Nearby ZIP codes

92154 San Diego 91915 Chula Vista 91913 Chula Vista 91914 Chula Vista 91911 Chula Vista 92173 San Ysidro

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 SAN DIEGO LINDBERGH FLD GSN (USW00023188) 3.2 km away 27 yrs of record · about the same elevation
  • 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: Iowa Environmental Mesonet ASOS archive (NWS/FAA METAR routine + special obs; one value per clock hour)
  • Raw data: /data/zip/92179.json