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

Planting zone for 95232 — Glencoe, CA

ZIP code 95232 (Glencoe, Calaveras County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 4 and the first fall frost December 11.

Where ZIP 95232 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.

Zone9a20 to 25 °F
Coldest night−6.7 to −3.9 °C
Last frostMar 4
First frostDec 11
2012 zone9a

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 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Glencoe, 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 Glencoe, CA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 4median — 50% chance of a later frost
Safe for tender plantsApril 8only 10% chance of frost after
First fall frostDecember 11median — 10% chance by Nov 19
Growing season285 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 10 and returns around December 27.

From the NOAA station Sutter Hill Cdf, CA — 12 miles away, elevation 1,585 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 95232

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 21 – Feb 4
SpinachSow outdoors · Jan 21 – Feb 11
Broccoli, cabbageStart indoors · Dec 24 – Jan 7
Broccoli, cabbageTransplant · Feb 11 – Feb 25
Onion setsPlant outdoors · Feb 4 – Feb 18
PotatoesPlant outdoors · Feb 11 – Feb 25
LettuceSow outdoors · Feb 4 – Feb 18
Carrots, beetsSow outdoors · Feb 11 – Feb 25
TomatoesStart indoors · Jan 7 – Jan 21
TomatoesTransplant · Mar 11 – Mar 25
Peppers, eggplantStart indoors · Dec 24 – Jan 7
Peppers, eggplantTransplant · Mar 18 – Apr 1
BeansSow outdoors · Mar 11 – Mar 25
Sweet cornSow outdoors · Mar 11 – Mar 25
Cucumbers, squashSow outdoors · Mar 11 – Mar 25
Fall lettuce, spinachSow outdoors · Oct 16 – Oct 30
GarlicPlant cloves · Nov 27 – Jan 1
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 4) and first fall frost (Dec 11) 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 95232 came on Jan 28 — 6 days earlier than the 1991–2020 average (Feb 3).

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 Glencoe, CA

The soil mapped at the center of ZIP 95232 is Nedsgulch — slightly decomposed plant material, well drained.

TextureSlightly decomposed plant materialtop layer
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter75%high
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Nedsgulch-Arpatutu complex, 30 to 60 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 95232; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Glencoe, CA

Summer high93 °Faverage high, July
Winter low39 °Faverage low, January
Hot days75days a year at 90 °F or more
Freezing nights15nights a year at 32 °F or less
Growing degree days4,486base 50 °F — the season’s usable heat
Longest day14 h 50 mindaylight on June 21
Shortest day9 h 29 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation40.6 inper year, rain and melted snow
Snowfall4 inper year; 1 days with snow on the ground

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 55 °F, low 39 °F 55°39° JanFebruary: average high 58 °F, low 42 °F 58°42° FebMarch: average high 62 °F, low 42 °F 62°42° MarApril: average high 67 °F, low 45 °F 67°45° AprMay: average high 75 °F, low 51 °F 75°51° MayJune: average high 86 °F, low 57 °F 86°57° JunJuly: average high 93 °F, low 63 °F 93°63° JulAugust: average high 92 °F, low 62 °F 92°62° AugSeptember: average high 87 °F, low 60 °F 87°60° SepOctober: average high 77 °F, low 53 °F 77°53° OctNovember: average high 63 °F, low 44 °F 63°44° NovDecember: average high 55 °F, low 39 °F 55°39° Dec

Precipitation by month inches · ❄ = snowfall

0″2″4″6″8″January: 7.34 in precipitation, 0.1 in snowfall 7.3 JanFebruary: 6.91 in precipitation, 1.7 in snowfall 6.9❄2 FebMarch: 6.39 in precipitation, 1.5 in snowfall 6.4❄2 MarApril: 3.36 in precipitation 3.4 AprMay: 2.14 in precipitation 2.1 MayJune: 0.49 in precipitation 0.5 JunJuly: 0.00 in precipitation 0.0 JulAugust: 0.04 in precipitation 0.0 AugSeptember: 0.27 in precipitation 0.3 SepOctober: 2.15 in precipitation 2.1 OctNovember: 3.95 in precipitation 4.0 NovDecember: 7.52 in precipitation, 0.4 in snowfall 7.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Sutter Hill Cdf, CA (12 mi away); precipitation: W Pt, CA (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

952459a
Mokelumne Hill, CA · 4 mi
956659a
Pine Grove, CA · 5 mi
952578b
Wilseyville, CA · 6 mi
952559a
West Point, CA · 7 mi
952489a
Rail Road Flat, CA · 7 mi
956899a
Volcano, CA · 8 mi
952469a
Mountain Ranch, CA · 9 mi
956429b
Jackson, CA · 10 mi

California planting zones →

Questions about 95232

What planting zone is ZIP code 95232?

ZIP code 95232 (Glencoe, CA) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in Glencoe, CA?

The median last spring frost (32 °F) near 95232 is March 4; after April 8 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Sutter Hill Cdf station.

When is the first frost in Glencoe, CA?

The median first fall frost near 95232 is December 11, giving a median frost-free growing season of 285 days.

When should I plant tomatoes in 95232?

Start tomato seeds indoors around Jan 7 – Jan 21 and set transplants outside around Mar 11 – Mar 25, one to three weeks after the median last frost.

How much rain and snow does 95232 get?

About 40.6 inches of precipitation a year and 4 inches of snowfall (NOAA 1991–2020 normals, W Pt station).

How hot do summers get in Glencoe, CA?

The average high peaks at 93 °F in July, with about 75 days a year at 90 °F or more.

What kind of soil does 95232 have?

The USDA soil survey maps Nedsgulch at the center of ZIP 95232: slightly decomposed plant material, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Glencoe, CA in 2026?

Spring leaf-out near 95232 came on Jan 28 in 2026, 6 days earlier than the 1991–2020 average (Feb 3), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Glencoe, CA?

Intermediate onions: the longest day near 95232 is 14 h 50 min, so day-neutral types bulb best; long-day varieties may not bulb fully.