Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 92386 — Sugarloaf, CA

ZIP code 92386 (Sugarloaf, San Bernardino County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is May 27 and the first fall frost October 4.

Where ZIP 92386 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostMay 27
First frostOct 4
2012 zone7a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Sugarloaf, CA…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Sugarloaf, CA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 27median — 50% chance of a later frost
Safe for tender plantsJune 9only 10% chance of frost after
First fall frostOctober 4median — 10% chance by Sep 21
Growing season131 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 4 and returns around October 20.

From the NOAA station Big Bear Lake, CA — 5 miles away, elevation 6,752 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 92386

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 15 – Apr 29
SpinachSow outdoors · Apr 15 – May 6
Broccoli, cabbageStart indoors · Mar 18 – Apr 1
Broccoli, cabbageTransplant · May 6 – May 20
Onion setsPlant outdoors · Apr 29 – May 13
PotatoesPlant outdoors · May 6 – May 20
LettuceSow outdoors · Apr 29 – May 13
Carrots, beetsSow outdoors · May 6 – May 20
TomatoesStart indoors · Apr 1 – Apr 15
TomatoesTransplant · Jun 3 – Jun 17
Peppers, eggplantStart indoors · Mar 18 – Apr 1
Peppers, eggplantTransplant · Jun 10 – Jun 24
BeansSow outdoors · Jun 3 – Jun 17
Sweet cornSow outdoors · Jun 3 – Jun 17
Cucumbers, squashSow outdoors · Jun 3 – Jun 17
Fall lettuce, spinachSow outdoors · Aug 9 – Aug 23
GarlicPlant cloves · Sep 20 – Oct 25
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 27) and first fall frost (Oct 4) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 92386 came on Feb 28 — 25 days earlier than the 1991–2020 average (Mar 25).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Sugarloaf, CA

The soil mapped at the center of ZIP 92386 is Garloaf — very cobbly loam, well drained.

TextureVery cobbly loama good balance for most vegetables
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Garloaf-Urban land complex, 4 to 9 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 92386; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Sugarloaf, CA

Summer high80 °Faverage high, July
Winter low24 °Faverage low, January
Hot days1days a year at 90 °F or more
Freezing nights176nights a year at 32 °F or less
Growing degree days1,644base 50 °F — the season’s usable heat
Longest day14 h 27 mindaylight on June 21
Shortest day9 h 52 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation20 inper year, rain and melted snow
Snowfall59 inper year

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 46 °F, low 24 °F 46°24° JanFebruary: average high 46 °F, low 24 °F 46°24° FebMarch: average high 51 °F, low 27 °F 51°27° MarApril: average high 57 °F, low 31 °F 57°31° AprMay: average high 66 °F, low 37 °F 66°37° MayJune: average high 75 °F, low 44 °F 75°44° JunJuly: average high 80 °F, low 51 °F 80°51° JulAugust: average high 79 °F, low 50 °F 79°50° AugSeptember: average high 73 °F, low 44 °F 73°44° SepOctober: average high 63 °F, low 35 °F 63°35° OctNovember: average high 54 °F, low 28 °F 54°28° NovDecember: average high 46 °F, low 24 °F 46°24° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 4.51 in precipitation, 13.4 in snowfall 4.5❄13 JanFebruary: 4.39 in precipitation, 14.3 in snowfall 4.4❄14 FebMarch: 2.37 in precipitation, 11.7 in snowfall 2.4❄12 MarApril: 0.78 in precipitation, 3 in snowfall 0.8❄3 AprMay: 0.42 in precipitation, 0.6 in snowfall 0.4❄1 MayJune: 0.15 in precipitation 0.1 JunJuly: 0.69 in precipitation 0.7 JulAugust: 0.82 in precipitation 0.8 AugSeptember: 0.40 in precipitation 0.4 SepOctober: 0.79 in precipitation, 1.2 in snowfall 0.8❄1 OctNovember: 1.35 in precipitation, 3.4 in snowfall 1.4❄3 NovDecember: 3.31 in precipitation, 11 in snowfall 3.3❄11 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Big Bear Lake, CA (5 mi away); precipitation: Big Bear Lake, CA (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

5 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

923147a
Big Bear City, CA · 2 mi
923157b
Big Bear Lake, CA · 7 mi
923057a
Angelus Oaks, CA · 7 mi
923337a
Fawnskin, CA · 9 mi
923397b
Forest Falls, CA · 11 mi
923417b
Green Valley Lake, CA · 14 mi
922569b
Morongo Valley, CA · 16 mi
923828a
Running Springs, CA · 17 mi

California planting zones →

Questions about 92386

What planting zone is ZIP code 92386?

ZIP code 92386 (Sugarloaf, CA) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Sugarloaf, CA?

The median last spring frost (32 °F) near 92386 is May 27; after June 9 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Big Bear Lake station.

When is the first frost in Sugarloaf, CA?

The median first fall frost near 92386 is October 4, giving a median frost-free growing season of 131 days.

When should I plant tomatoes in 92386?

Start tomato seeds indoors around Apr 1 – Apr 15 and set transplants outside around Jun 3 – Jun 17, one to three weeks after the median last frost.

How much rain and snow does 92386 get?

About 20 inches of precipitation a year and 59 inches of snowfall (NOAA 1991–2020 normals, Big Bear Lake station).

How hot do summers get in Sugarloaf, CA?

The average high peaks at 80 °F in July, with about 1 days a year at 90 °F or more.

What kind of soil does 92386 have?

The USDA soil survey maps Garloaf at the center of ZIP 92386: very cobbly loam, well drained, pH about 6.2 (slightly acidic).

Did spring come early in Sugarloaf, CA in 2026?

Spring leaf-out near 92386 came on Feb 28 in 2026, 25 days earlier than the 1991–2020 average (Mar 25), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Sugarloaf, CA?

Intermediate onions: the longest day near 92386 is 14 h 27 min, so day-neutral types bulb best; long-day varieties may not bulb fully.