Garden Climate for San Diego & La Jolla: 92037, 92092, 92093, 92107, 92109, 92110, 92111, 92117, 92161

Zone 10b · Frost-free in most years · Soil 70.7°F today (modeled) · See your place on the 2023 USDA zone map

ZIPs in this area

What differs between these ZIPs: elevation, chill hours, soil temperature. Everything else on this page is the same for all of them. The page below shows 92107 (closest to the area's middle elevation).

ZIP	Town	Elevation	Zone	Last frost	First frost	Chill hrs last season	Soil now
92037	La Jolla	382 ft	10b	frost-free	frost-free	31	71.3°F
92092	La Jolla	107 ft	10b	frost-free	frost-free	31	69.7°F
92093	La Jolla	107 ft	10b	frost-free	frost-free	31	69.8°F
92107	San Diego	136 ft	10b	frost-free	frost-free	31	70.7°F
92109	San Diego	64 ft	10b	frost-free	frost-free	31	71.3°F
92110	San Diego	19 ft	10b	frost-free	frost-free	31	71.3°F
92111	San Diego	347 ft	10b	frost-free	frost-free	41	70.3°F
92117	San Diego	294 ft	10b	frost-free	frost-free	41	69.8°F
92161	San Diego	264 ft	10b	frost-free	frost-free	31	69.8°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: all frost-free in most years, last season's chill hours all in the <100 range, the same coastal 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 · San Diego focus

Zone

10b

USDA 2023 · 35 to 40°F

Last frost

None

frost-free ≥9 of 10 yrs

Soil temp Modeled

70.7°F

↓ 6.8° in 7 days

Chill hours

—

starts Nov 1

Rain

1.04″

since Oct 1 · normal 0.17″

Frost dates for 92107

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 SAN DIEGO LINDBERGH FLD GSN (USW00023188) 5.7 km away 27 yrs of record · 121 ft lower than this ZIP

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

Fri 16

92° 73° gust 20 mph 💧6%

Clear

Sat 17

87° 68° gust 14 mph 💧6%

Clear

Sun 18

82° 67° gust 18 mph 💧0%

Clear

Mon 19

77° 65° gust 15 mph 💧7%

Clear

Tue 20

69° 62° gust 18 mph 💧67% · 0.04″

Rain

Wed 21

69° 61° gust 20 mph 💧67% · 0.52″

Rain

Thu 22

68° 61° gust 15 mph 💧37% · 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 · 92107

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 cloth Soil thermometer

Harvest planner

Create an interactive chart of your garden plan to see estimated harvest times, harvest size, and get recommendations based on your unique growing plan!

Open planner for 92107 →

Soil temperature Modeled

Daily average 70.7°F on 2026-10-15, mean of 6 cm and 18 cm model layers (~4-5 in). Modeled

7-day trend: 77.5 → 75.8 → 72.2 → 70.1 → 68.4 → 68.0 → 70.7

Source: Open-Meteo forecast API soil model (non-commercial terms).

Why modeled: no operational USCRN within 60 km and 300 m elevation

Chill hours this season

This season

—

Counting starts Nov 1

Last year by today

—

Counting starts Nov 1

10-year average by today

—

Counting starts Nov 1

Last season's total

Nov 1–Apr 30 · 2025-26 · 100% of hours recorded

All values are hours between 32°F and 45°F. Observed at SAN DIEGO/LINDBERG (SAN) 5.6 km away · 108 ft lower than this ZIP · Iowa Environmental Mesonet ASOS archive (NWS/FAA METAR routine + special obs; one value per clock hour). Chill hours = observed hours with 32F <= T <= 45F, counted from Nov 1. Missing hours are not filled. Past seasons use the same station and method; the average only includes seasons with >=80% hourly coverage.

Rainfall this season

This water year (since Oct 1)

1.04″

Oct 1–Oct 15 · 100% of days recorded · Oct 1–Oct 13 San Diego Lindbergh Field (GHCN) + Oct 14–Oct 15 Lindberg (airport ASOS)

Last year by Oct 15

0.41″

Oct 1–Oct 15, 2025 · 100% of days recorded

30-yr normal by Oct 15

0.17″

Oct 1–Oct 15 · NOAA 1991–2020 normal · full water year 9.79″

Last water year total

10.12″

Oct 1 2025–Sep 30 2026 · 100% of days recorded

Rain and melted snow, inches. Observed at CA SAN DIEGO LINDBERGH FLD GSN (USW00023188) 5.7 km away · 121 ft lower than this ZIP · NOAA NCEI GHCN-Daily (values with a quality flag are skipped; daily reports usually lag a few days to weeks, latest Oct 13). Normal: NOAA NCEI U.S. Climate Normals 1991–2020 (daily). Season starts Oct 1 (water year (Oct 1–Sep 30)). Days after Oct 13 come from SAN DIEGO/LINDBERG (SAN) 5.6 km away · 108 ft lower than this ZIP: Iowa Environmental Mesonet ASOS daily summary (METAR precipitation; a reporting day with no precip group counts as 0.00). That station uses the same distance, elevation and coastal rules; only this water year is filled. Comparisons run through the last complete day.

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Zone border tip

The 2023 USDA map puts 92107's point in zone 10b. The nearest different zone (11a) is about 1.3 km away on the map. That's close, so if you garden on that side, base plant choices on your exact spot, not the ZIP average.

Recent from the blog

Posts are coming soon. Planned: "Are frost dates shifting? 1991–2020 vs 1981–2010", "Reading chill hours for fruit trees".

Blog →

Questions about 92107

What USDA hardiness zone is 92107?

ZIP 92107 (San Diego, CA) is in USDA zone 10b (35 to 40°F average annual extreme minimum), per the 2023 USDA Plant Hardiness Zone Map.

When is the last frost in 92107?

The nearest NOAA normals station (Ca San Diego Lindbergh Fld Gsn, 5.7 km) records no 32°F freeze in at least 9 of 10 years (1991–2020).

Nearby ZIP codes

92147 San Diego 92106 San Diego 92140 San Diego 92110 San Diego 92109 San Diego 92118 Coronado

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 SAN DIEGO LINDBERGH FLD GSN (USW00023188) 5.7 km away 27 yrs of record · 121 ft lower 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/92107.json

Garden Climate for San Diego & La Jolla: 92037, 92092, 92093, 92107, 92109, 92110, 92111, 92117, 92161

ZIPs in this area

USDA Plant Hardiness Zone Map · San Diego focus

Frost dates for 92107

Newsletter · 92107

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

What to grow when · 92107

Questions about 92107

Nearby ZIP codes

Sources for this page