Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 93673 — Traver, CA

ZIP code 93673 (Traver, Tulare County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is February 20 and the first fall frost November 23.

Where ZIP 93673 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.

Zone9b25 to 30 °F

Coldest night−3.9 to −1.1 °C

Last frostFeb 20

First frostNov 23

2012 zone9b

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 9b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Traver, 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 Traver, CA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostFebruary 20median — 50% chance of a later frost

Safe for tender plantsMarch 21only 10% chance of frost after

First fall frostNovember 23median — 10% chance by Nov 6

Growing season276 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 19 and returns around December 5.

From the NOAA station Hanford Municipal Airport, CA — 12 miles away, elevation 249 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 93673

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 9 – Jan 23

SpinachSow outdoors · Jan 9 – Jan 30

Broccoli, cabbageStart indoors · Dec 12 – Dec 26

Broccoli, cabbageTransplant · Jan 30 – Feb 13

Onion setsPlant outdoors · Jan 23 – Feb 6

PotatoesPlant outdoors · Jan 30 – Feb 13

LettuceSow outdoors · Jan 23 – Feb 6

Carrots, beetsSow outdoors · Jan 30 – Feb 13

TomatoesStart indoors · Dec 26 – Jan 9

TomatoesTransplant · Feb 27 – Mar 13

Peppers, eggplantStart indoors · Dec 12 – Dec 26

Peppers, eggplantTransplant · Mar 6 – Mar 20

BeansSow outdoors · Feb 27 – Mar 13

Sweet cornSow outdoors · Feb 27 – Mar 13

Cucumbers, squashSow outdoors · Feb 27 – Mar 13

Fall lettuce, spinachSow outdoors · Sep 28 – Oct 12

GarlicPlant cloves · Nov 9 – Dec 14

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 20) and first fall frost (Nov 23) 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 93673 came on Jan 30 — about the same time as the 1991–2020 average (Feb 1).

average
Feb 12026
Jan 30

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 Traver, CA

The soil mapped at the center of ZIP 93673 is Calgro — sandy loam, moderately well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH7.9alkaline; most vegetables like 6.0–7.0

DrainageModerately well drainednatural drainage class

Organic matter0.5%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Calgro-Calgro, saline-Sodic, complex, 0 to 2 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 93673; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Traver, CA

Summer high98 °Faverage high, July

Winter low35 °Faverage low, December

Hot days112days a year at 90 °F or more

Freezing nights31nights a year at 32 °F or less

Growing degree days5,283base 50 °F — the season’s usable heat

Longest day14 h 39 mindaylight on June 21

Shortest day9 h 40 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation10.2 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Hanford Municipal Airport, CA (12 mi away); precipitation: Hanford 3.6 N, CA (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9b.

California planting zones →

Questions about 93673

What planting zone is ZIP code 93673?

ZIP code 93673 (Traver, CA) is in USDA hardiness zone 9b on the 2023 map: the coldest night of an average winter reaches 25 to 30 °F (−3.9 to −1.1 °C).

When is the last frost in Traver, CA?

The median last spring frost (32 °F) near 93673 is February 20; after March 21 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hanford Municipal Airport station.

When is the first frost in Traver, CA?

The median first fall frost near 93673 is November 23, giving a median frost-free growing season of 276 days.

When should I plant tomatoes in 93673?

Start tomato seeds indoors around Dec 26 – Jan 9 and set transplants outside around Feb 27 – Mar 13, one to three weeks after the median last frost.

How much rain and snow does 93673 get?

About 10.2 inches of precipitation a year (NOAA 1991–2020 normals, Hanford 3.6 N station).

How hot do summers get in Traver, CA?

The average high peaks at 98 °F in July, with about 112 days a year at 90 °F or more.

What kind of soil does 93673 have?

The USDA soil survey maps Calgro at the center of ZIP 93673: sandy loam, moderately well drained, pH about 7.9 (alkaline).

Did spring come early in Traver, CA in 2026?

Spring leaf-out near 93673 came on Jan 30 in 2026, about the same as the 1991–2020 average (Feb 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Traver, CA?

Intermediate onions: the longest day near 93673 is 14 h 39 min, so day-neutral types bulb best; long-day varieties may not bulb fully.