Garden Climate for Julian, CA 92036

Zone 9b · Last frost ~Apr 19 · Soil 66.8°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 · Julian focus

2023 USDA Plant Hardiness Zone Map around ZIP 92036, marker at Julian, 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
9b
USDA 2023 · 25 to 30°F
Last frost
Apr 19
avg last frost (50%)
Soil temp Modeled
66.8°F
↓ 18.8° in 7 days
Chill hours
—
unavailable
Rain
—
since Oct 1 · not enough data

Frost dates for 92036

Last spring frost
Apr 19
50% odds
First fall frost
Oct 27
50% odds
Safer spring date
May 14
10% chance of later frost
Growing season
190
days (50%)

Earliest-risk fall date (10%): Oct 9.

NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal freeze probabilities (32F) · CA CUYAMACA HCN (USC00042239) 7.4 km away 25 yrs of record · 446 ft higher than this ZIP

Newsletter · 92036

Frost alerts and planting reminders for 92036. Coming soon.

Ad strip · leaderboard 970×90 / 728×90

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

Fri 16
77° 63° gust 29 mph 💧11%
Clear
Sat 17
69° 59° gust 17 mph 💧4%
Clear
Sun 18
72° 61° gust 14 mph 💧0%
Clear
Mon 19
76° 58° gust 12 mph 💧2%
Clear
Tue 20
70° 55° gust 20 mph 💧16%
Clear
Wed 21
63° 53° gust 15 mph 💧39% · 0.05″
Clear
Thu 22
64° 53° gust 12 mph 💧12%
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 · 92036

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 92036

What USDA hardiness zone is 92036?

ZIP 92036 (Julian, CA) is in USDA zone 9b (25 to 30°F average annual extreme minimum), per the 2023 USDA Plant Hardiness Zone Map.

When is the last frost in 92036?

Based on NOAA 1991–2020 normals at Ca Cuyamaca Hcn (7.4 km away), the median last 32°F freeze is Apr 19. In 1 of 10 years it is after May 14. The median first fall freeze is Oct 27.

Nearby ZIP codes

92004 Borrego Springs 91948 Mount Laguna 91962 Pine Valley 92066 Ranchita 91931 Guatay 91916 Descanso

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 CUYAMACA HCN (USC00042239) 7.4 km away 25 yrs of record · 446 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/92036.json