Zone 10a · Last frost ~Jan 30 · Soil 68.7°F today (modeled) · See your place on the 2023 USDA zone map
This ZIP is part of Vista & Oceanside, where nearby ZIPs share the same stations and zone. That page compares every ZIP in the area.
Public NOAA/USDA data, updated 2026-10-16 19:24 UTC.
USDA Plant Hardiness Zone Map · Oceanside focus
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The map pixel at the marker shows 9b. The ZIP lookup table gives 10a for the whole ZIP area. Zone edges run through or near this ZIP.
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 30
avg last frost (50%)
Soil temp Modeled
68.7°F
↓ 7.3° in 7 days
Chill hours
—
starts Nov 1
Rain
1.74″
since Oct 1 · normal 0.25″
Frost dates for 92057
Last spring frost
Jan 30
50% odds
First fall frost
Jan 7 (next yr)
50% odds
Safer spring date
Mar 16
10% chance of later frost
Growing season
365
days (50%)
Earliest-risk fall date (10%): Dec 14.
NOAA NCEI U.S. Climate Normals 1991-2020, annual/seasonal freeze probabilities (32F) · CA VISTA (USC00049378) 6.6 km away 22 yrs of record · 354 ft higher than this ZIP
Newsletter · 92057
Frost alerts and planting reminders for 92057. Coming soon.
Ad strip · leaderboard 970×90 / 728×90
7-day forecast · High / Low / Rain / Frost / Wind
Fri 16
94°71°gust 35 mph💧2%
Clear
Sat 17
91°65°gust 24 mph💧2%
Clear
Sun 18
87°65°gust 16 mph💧1%
Clear
Mon 19
82°62°gust 15 mph💧10%
Clear
Tue 20
73°59°gust 25 mph💧68% · 0.07″
Rain
Wed 21
71°58°gust 22 mph💧68% · 0.72″
Rain
Thu 22
70°57°gust 16 mph💧32% · 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 · 92057
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.
ZIP 92057 (Oceanside, 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 92057?
Based on NOAA 1991–2020 normals at Ca Vista (6.6 km away), the median last 32°F freeze is Jan 30. In 1 of 10 years it is after Mar 16. The median first fall freeze is Jan 7.
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 VISTA (USC00049378) 6.6 km away 22 yrs of record · 354 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)
