Garden Climate for Borrego Springs, CA 92004

Zone 10a · Last frost ~Jan 10 · Soil 75.9°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 · Borrego Springs focus

2023 USDA Plant Hardiness Zone Map around ZIP 92004, marker at Borrego Springs, 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 10
avg last frost (50%)
Soil temp Modeled
75.9°F
↓ 18.8° in 7 days
Chill hours
—
starts Nov 1
Rain
0.96″
since Oct 1 · normal 0.08″

Frost dates for 92004

Last spring frost
Jan 10
50% odds
First fall frost
Jan 1 (next yr)
50% odds
Safer spring date
Feb 16
10% chance of later frost
Growing season
365
days (50%)

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

NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal freeze probabilities (32F) · CA BORREGO DESERT PARK (USC00040983) 5.2 km away 24 yrs of record · 282 ft higher than this ZIP

Newsletter · 92004

Frost alerts and planting reminders for 92004. Coming soon.

Ad strip · leaderboard 970×90 / 728×90

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

Fri 16
90° 70° gust 30 mph 💧7%
Clear
Sat 17
82° 67° gust 21 mph 💧2%
Clear
Sun 18
84° 69° gust 14 mph 💧0%
Clear
Mon 19
86° 66° gust 13 mph 💧1%
Clear
Tue 20
81° 63° gust 36 mph 💧8%
Clear
Wed 21
75° 59° gust 25 mph 💧29% · 0.03″
Clear
Thu 22
77° 59° gust 20 mph 💧8%
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 · 92004

Calendar: San Diego County, low desert (Anza-Borrego). Planting months from University of Arizona Cooperative Extension az1005 'Vegetable Planting Calendar for Maricopa County' (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 92004

What USDA hardiness zone is 92004?

ZIP 92004 (Borrego Springs, 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 92004?

Based on NOAA 1991–2020 normals at Ca Borrego Desert Park (5.2 km away), the median last 32°F freeze is Jan 10. In 1 of 10 years it is after Feb 16. The median first fall freeze is Jan 1.

Nearby ZIP codes

92036 Julian 92066 Ranchita 92086 Warner Springs 91948 Mount Laguna 91962 Pine Valley 92070 Santa Ysabel

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 BORREGO DESERT PARK (USC00040983) 5.2 km away 24 yrs of record · 282 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: Iowa Environmental Mesonet ASOS archive (NWS/FAA METAR routine + special obs; one value per clock hour)
  • Raw data: /data/zip/92004.json