Public NOAA/USDA data, updated 2026-10-16 19:24 UTC.
USDA Plant Hardiness Zone Map · Carlsbad focus
6a6b7a7b8a8b9a9b10a10b11a11b
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
None
frost-free ≥9 of 10 yrs
Soil temp Modeled
69.3°F
↓ 7.2° in 7 days
Chill hours
—
starts Nov 1
Rain
1.91″
since Oct 1 · normal 0.18″
Frost dates for 92008
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 CARLSBAD PALOMAR AP (USW00003177) 5.5 km away 20 yrs of record · 95 ft higher than this ZIP
Newsletter · 92008
Frost alerts and planting reminders for 92008. Coming soon.
Ad strip · leaderboard 970×90 / 728×90
7-day forecast · High / Low / Rain / Frost / Wind
Fri 16
92°72°gust 26 mph💧2%
Clear
Sat 17
88°66°gust 25 mph💧2%
Clear
Sun 18
83°65°gust 16 mph💧1%
Clear
Mon 19
79°63°gust 15 mph💧10%
Clear
Tue 20
71°60°gust 21 mph💧67% · 0.07″
Rain
Wed 21
69°59°gust 20 mph💧67% · 0.68″
Rain
Thu 22
68°58°gust 16 mph💧36% · 0.12″
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 · 92008
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.
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 CARLSBAD PALOMAR AP (USW00003177) 5.5 km away 20 yrs of record · 95 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)