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

Planting zone for 96093 — Weaverville, CA

ZIP code 96093 (Weaverville, Trinity County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is May 3 and the first fall frost October 11.

Where ZIP 96093 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.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
Last frostMay 3
First frostOct 11
2012 zone8a

Was 8a on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Weaverville, 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 Weaverville, CA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 3median — 50% chance of a later frost
Safe for tender plantsMay 27only 10% chance of frost after
First fall frostOctober 11median — 10% chance by Sep 28
Growing season159 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 11 and returns around October 29.

From the NOAA station Weaverville, CA — 2 miles away, elevation 2,057 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 96093

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 22 – Apr 5
SpinachSow outdoors · Mar 22 – Apr 12
Broccoli, cabbageStart indoors · Feb 22 – Mar 8
Broccoli, cabbageTransplant · Apr 12 – Apr 26
Onion setsPlant outdoors · Apr 5 – Apr 19
PotatoesPlant outdoors · Apr 12 – Apr 26
LettuceSow outdoors · Apr 5 – Apr 19
Carrots, beetsSow outdoors · Apr 12 – Apr 26
TomatoesStart indoors · Mar 8 – Mar 22
TomatoesTransplant · May 10 – May 24
Peppers, eggplantStart indoors · Feb 22 – Mar 8
Peppers, eggplantTransplant · May 17 – May 31
BeansSow outdoors · May 10 – May 24
Sweet cornSow outdoors · May 10 – May 24
Cucumbers, squashSow outdoors · May 10 – May 24
Fall lettuce, spinachSow outdoors · Aug 16 – Aug 30
GarlicPlant cloves · Sep 27 – Nov 1
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 3) and first fall frost (Oct 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 96093 came on Feb 7 — 24 days earlier than the 1991–2020 average (Mar 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 Weaverville, CA

The soil mapped at the center of ZIP 96093 is Soulajule family — gravelly loam, well drained.

TextureGravelly loama good balance for most vegetables
pH6.8neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Soulajule family, 40 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 96093; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Weaverville, CA

Summer high95 °Faverage high, July
Winter low31 °Faverage low, January
Hot days85days a year at 90 °F or more
Freezing nights106nights a year at 32 °F or less
Growing degree days3,089base 50 °F — the season’s usable heat
Longest day15 h 06 mindaylight on June 21
Shortest day9 h 15 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation37.5 inper year, rain and melted snow
Snowfall9 inper year; 6 days with snow on the ground

Average high and low, by month

20°30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 50 °F, low 31 °F 50°31° JanFebruary: average high 55 °F, low 31 °F 55°31° FebMarch: average high 61 °F, low 33 °F 61°33° MarApril: average high 68 °F, low 36 °F 68°36° AprMay: average high 77 °F, low 42 °F 77°42° MayJune: average high 86 °F, low 46 °F 86°46° JunJuly: average high 95 °F, low 52 °F 95°52° JulAugust: average high 95 °F, low 50 °F 95°50° AugSeptember: average high 89 °F, low 44 °F 89°44° SepOctober: average high 75 °F, low 36 °F 75°36° OctNovember: average high 57 °F, low 33 °F 57°33° NovDecember: average high 47 °F, low 31 °F 47°31° Dec

Precipitation by month inches · ❄ = snowfall

0″2″4″6″8″January: 6.68 in precipitation, 2.2 in snowfall 6.7❄2 JanFebruary: 5.69 in precipitation, 1.3 in snowfall 5.7❄1 FebMarch: 5.01 in precipitation, 0.2 in snowfall 5.0 MarApril: 2.62 in precipitation, 0.2 in snowfall 2.6 AprMay: 1.86 in precipitation 1.9 MayJune: 0.93 in precipitation 0.9 JunJuly: 0.27 in precipitation 0.3 JulAugust: 0.17 in precipitation 0.2 AugSeptember: 0.31 in precipitation 0.3 SepOctober: 2.00 in precipitation 2.0 OctNovember: 4.33 in precipitation, 0.8 in snowfall 4.3❄1 NovDecember: 7.67 in precipitation, 4 in snowfall 7.7❄4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Weaverville, CA (2 mi away); precipitation: Weaverville, CA (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

960488b
Junction City, CA · 6 mi
960528b
Lewiston, CA · 10 mi
960248b
Douglas City, CA · 15 mi
960339a
French Gulch, CA · 18 mi
960108b
Big Bar, CA · 20 mi
960917b
Trinity Center, CA · 21 mi
960879a
Shasta, CA · 21 mi
960959b
Whiskeytown, CA · 22 mi

California planting zones →

Questions about 96093

What planting zone is ZIP code 96093?

ZIP code 96093 (Weaverville, CA) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Weaverville, CA?

The median last spring frost (32 °F) near 96093 is May 3; after May 27 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Weaverville station.

When is the first frost in Weaverville, CA?

The median first fall frost near 96093 is October 11, giving a median frost-free growing season of 159 days.

When should I plant tomatoes in 96093?

Start tomato seeds indoors around Mar 8 – Mar 22 and set transplants outside around May 10 – May 24, one to three weeks after the median last frost.

How much rain and snow does 96093 get?

About 37.5 inches of precipitation a year and 9 inches of snowfall (NOAA 1991–2020 normals, Weaverville station).

How hot do summers get in Weaverville, CA?

The average high peaks at 95 °F in July, with about 85 days a year at 90 °F or more.

What kind of soil does 96093 have?

The USDA soil survey maps Soulajule family at the center of ZIP 96093: gravelly loam, well drained, pH about 6.8 (neutral).

Did spring come early in Weaverville, CA in 2026?

Spring leaf-out near 96093 came on Feb 7 in 2026, 24 days earlier than the 1991–2020 average (Mar 3), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Weaverville, CA?

Long-day onions: the longest day near 96093 is 15 h 06 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 96093 change?

Yes. The 2012 USDA map put 96093 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.