Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 30, 2026

Planting zone for 93628 — Hume, CA

ZIP code 93628 (Hume, Fresno County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is June 1 and the first fall frost October 7.

Where ZIP 93628 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.

Zone7b5 to 10 °F

Coldest night−15 to −12.2 °C

Last frostJun 1

First frostOct 7

2012 zone7a

Was 7a 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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Hume, 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 Hume, CA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostJune 1median — 50% chance of a later frost

Safe for tender plantsJune 15only 10% chance of frost after

First fall frostOctober 7median — 10% chance by Sep 19

Growing season132 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 16 and returns around October 21.

From the NOAA station Grant Grove, CA — 7 miles away, elevation 6,582 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 93628

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 20 – May 4

SpinachSow outdoors · Apr 20 – May 11

Broccoli, cabbageStart indoors · Mar 23 – Apr 6

Broccoli, cabbageTransplant · May 11 – May 25

Onion setsPlant outdoors · May 4 – May 18

PotatoesPlant outdoors · May 11 – May 25

LettuceSow outdoors · May 4 – May 18

Carrots, beetsSow outdoors · May 11 – May 25

TomatoesStart indoors · Apr 6 – Apr 20

TomatoesTransplant · Jun 8 – Jun 22

Peppers, eggplantStart indoors · Mar 23 – Apr 6

Peppers, eggplantTransplant · Jun 15 – Jun 29

BeansSow outdoors · Jun 8 – Jun 22

Sweet cornSow outdoors · Jun 8 – Jun 22

Cucumbers, squashSow outdoors · Jun 8 – Jun 22

Fall lettuce, spinachSow outdoors · Aug 12 – Aug 26

GarlicPlant cloves · Sep 23 – Oct 28

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 1) and first fall frost (Oct 7) 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 93628 came on Feb 22 — 45 days earlier than the 1991–2020 average (Apr 8).

average
Apr 82026
Feb 22

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 Hume, CA

The soil mapped at the center of ZIP 93628 is Cannell — sandy loam, well drained.

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

pH5.8moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter4%moderate

Hydrologic groupAwater soaks in fast

Farmland classNot prime farmlandUSDA classification

Map unit: Cannell-Kriest family,-Rock outcrop complex, 30 to 50 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 93628; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hume, CA

Summer high79 °Faverage high, July

Winter low25 °Faverage low, February

Hot days0days a year at 90 °F or more

Freezing nights137nights a year at 32 °F or less

Growing degree days1,819base 50 °F — the season’s usable heat

Longest day14 h 41 mindaylight on June 21

Shortest day9 h 38 mindaylight on December 21

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

Precipitation41.7 inper year, rain and melted snow

Snowfall186 inper year; 140 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Grant Grove, CA (7 mi away); precipitation: Grant Grove, CA (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

936337b

Kings Canyon National Pk, CA · 7 mi

936419a

Miramonte, CA · 12 mi

Three Rivers, CA · 23 mi

California planting zones →

Questions about 93628

What planting zone is ZIP code 93628?

ZIP code 93628 (Hume, CA) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Hume, CA?

The median last spring frost (32 °F) near 93628 is June 1; after June 15 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Grant Grove station.

When is the first frost in Hume, CA?

The median first fall frost near 93628 is October 7, giving a median frost-free growing season of 132 days.

When should I plant tomatoes in 93628?

Start tomato seeds indoors around Apr 6 – Apr 20 and set transplants outside around Jun 8 – Jun 22, one to three weeks after the median last frost.

How much rain and snow does 93628 get?

About 41.7 inches of precipitation a year and 186 inches of snowfall (NOAA 1991–2020 normals, Grant Grove station).

How hot do summers get in Hume, CA?

The average high peaks at 79 °F in July, with about 0 days a year at 90 °F or more.

What kind of soil does 93628 have?

The USDA soil survey maps Cannell at the center of ZIP 93628: sandy loam, well drained, pH about 5.8 (moderately acidic).

Did spring come early in Hume, CA in 2026?

Spring leaf-out near 93628 came on Feb 22 in 2026, 45 days earlier than the 1991–2020 average (Apr 8), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Hume, CA?

Intermediate onions: the longest day near 93628 is 14 h 41 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 93628 change?

Yes. The 2012 USDA map put 93628 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.