Garden Climate for Escondido, San Marcos & San Diego: 92025, 92026, 92027, 92029, 92069, 92096, 92127

Zone 10a · Last frost ~Jan 2 · Soil 72.1°F today (measured) · See your place on the 2023 USDA zone map

ZIPs in this area

What differs between these ZIPs: elevation, zone. Everything else on this page is the same for all of them. The page below shows 92029 (closest to the area's middle elevation).

ZIPTownElevationZoneLast frostFirst frostChill hrs last seasonSoil now
92025Escondido684 ft10aJan 2Dec 3053672.1°F
92026Escondido784 ft10aJan 2Dec 3053672.1°F
92027Escondido692 ft9bJan 2Dec 3053672.1°F
92029Escondido613 ft10aJan 2Dec 3053672.1°F
92069San Marcos588 ft10aJan 2Dec 3053672.1°F
92096San Marcos582 ft10aJan 2Dec 3053672.1°F
92127San Diego508 ft10aJan 2Dec 3053672.1°F

Why grouped: these are urban and suburban lowland ZIPs (under about 1,500 ft and within 40 km of the ocean) whose numbers are close: median last frost dates within about two weeks of each other, last season's chill hours all in the 300-600 range, the same inland setting and the same 820 ft elevation band. Each ZIP still uses its own nearest suitable stations; see the table for exact values.

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

USDA Plant Hardiness Zone Map · Escondido focus

2023 USDA Plant Hardiness Zone Map around ZIP 92029, marker at Escondido, 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
10a
USDA 2023 · 30 to 35°F
Last frost
Jan 2
avg last frost (50%)
Soil temp Measured
72.1°F
↓ 14.7° in 7 days
Chill hours
—
starts Nov 1
Rain
1.02″
since Oct 1 · normal 0.19″

Frost dates for 92029

Last spring frost
Jan 2
50% odds
First fall frost
Dec 30
50% odds
Safer spring date
Feb 4
10% chance of later frost
Growing season
365
days (50%)

Earliest-risk fall date (10%): Dec 8.

Station record: 19 of the 30 years in 1991–2020, which NOAA still uses for freeze dates. A full record would be more reliable.

NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal freeze probabilities (32F) · CA ESCONDIDO #2 (USC00042863) 4.1 km away 19 yrs of record · about the same elevation

Newsletter · 92029

Frost alerts and planting reminders for 92029. 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
91° 71° gust 51 mph 💧1%
High wind
Sat 17
88° 63° gust 36 mph 💧2%
Clear
Sun 18
87° 63° gust 17 mph 💧1%
Clear
Mon 19
83° 61° gust 16 mph 💧11%
Clear
Tue 20
73° 58° gust 28 mph 💧64% · 0.04″
Rain
Wed 21
71° 56° gust 23 mph 💧64% · 0.55″
Rain
Thu 22
69° 55° 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 · 92029

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 92029

What USDA hardiness zone is 92029?

ZIP 92029 (Escondido, CA) is in USDA zone 10a (30 to 35°F average annual extreme minimum), per the 2023 USDA Plant Hardiness Zone Map.

When is the last frost in 92029?

Based on NOAA 1991–2020 normals at Ca Escondido #2 (4.1 km away), the median last 32°F freeze is Jan 2. In 1 of 10 years it is after Feb 4. The median first fall freeze is Dec 30.

Nearby ZIP codes

92096 San Marcos 92078 San Marcos 92091 Rancho Santa Fe 92127 San Diego 92025 Escondido 92067 Rancho Santa Fe

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 ESCONDIDO #2 (USC00042863) 4.1 km away 19 yrs of record · about the same elevation
  • Forecast: NOAA National Weather Service api.weather.gov (7-day forecast + gridpoint wind gusts)
  • Soil: NOAA U.S. Climate Reference Network (USCRN) hourly02, SOIL_TEMP_10
  • Chill: CIMIS, California Department of Water Resources (hourly air temperature; QC-flagged hours dropped)
  • Raw data: /data/zip/92029.json