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

Planting zone for 93630 — Kerman, CA

ZIP code 93630 (Kerman, Fresno County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is February 18 and the first fall frost November 27.

Where ZIP 93630 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 frostFeb 18
First frostNov 27
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 Kerman, 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 Kerman, CA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostFebruary 18median — 50% chance of a later frost
Safe for tender plantsMarch 18only 10% chance of frost after
First fall frostNovember 27median — 10% chance by Nov 10
Growing season281 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 21 and returns around December 10.

From the NOAA station Madera, CA — 17 miles away, elevation 269 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 93630

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 7 – Jan 21
SpinachSow outdoors · Jan 7 – Jan 28
Broccoli, cabbageStart indoors · Dec 10 – Dec 24
Broccoli, cabbageTransplant · Jan 28 – Feb 11
Onion setsPlant outdoors · Jan 21 – Feb 4
PotatoesPlant outdoors · Jan 28 – Feb 11
LettuceSow outdoors · Jan 21 – Feb 4
Carrots, beetsSow outdoors · Jan 28 – Feb 11
TomatoesStart indoors · Dec 24 – Jan 7
TomatoesTransplant · Feb 25 – Mar 11
Peppers, eggplantStart indoors · Dec 10 – Dec 24
Peppers, eggplantTransplant · Mar 4 – Mar 18
BeansSow outdoors · Feb 25 – Mar 11
Sweet cornSow outdoors · Feb 25 – Mar 11
Cucumbers, squashSow outdoors · Feb 25 – Mar 11
Fall lettuce, spinachSow outdoors · Oct 2 – Oct 16
GarlicPlant cloves · Nov 13 – Dec 18
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 18) and first fall frost (Nov 27) 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 93630 came on Jan 30 — 3 days earlier than the 1991–2020 average (Feb 2).

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 Kerman, CA

The soil mapped at the center of ZIP 93630 is Fresno — fine sandy loam, somewhat poorly drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding
pH8.7alkaline; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter0.75%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Fresno fine sandy loam, shallow.

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 93630; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Kerman, CA

Summer high96 °Faverage high, July
Winter low36 °Faverage low, December
Hot days100days a year at 90 °F or more
Freezing nights26nights a year at 32 °F or less
Growing degree days4,942base 50 °F — the season’s usable heat
Longest day14 h 41 mindaylight on June 21
Shortest day9 h 39 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation10.7 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 55 °F, low 38 °F 55°38° JanFebruary: average high 61 °F, low 40 °F 61°40° FebMarch: average high 67 °F, low 44 °F 67°44° MarApril: average high 73 °F, low 47 °F 73°47° AprMay: average high 82 °F, low 53 °F 82°53° MayJune: average high 90 °F, low 59 °F 90°59° JunJuly: average high 96 °F, low 64 °F 96°64° JulAugust: average high 95 °F, low 63 °F 95°63° AugSeptember: average high 89 °F, low 58 °F 89°58° SepOctober: average high 78 °F, low 49 °F 78°49° OctNovember: average high 64 °F, low 41 °F 64°41° NovDecember: average high 55 °F, low 36 °F 55°36° Dec

Precipitation by month inches

0″1″2″January: 1.94 in precipitation 1.9 JanFebruary: 1.93 in precipitation 1.9 FebMarch: 1.94 in precipitation 1.9 MarApril: 1.10 in precipitation 1.1 AprMay: 0.54 in precipitation 0.5 MayJune: 0.12 in precipitation 0.1 JunJuly: 0.03 in precipitation 0.0 JulAugust: 0.01 in precipitation 0.0 AugSeptember: 0.07 in precipitation 0.1 SepOctober: 0.55 in precipitation 0.6 OctNovember: 0.79 in precipitation 0.8 NovDecember: 1.64 in precipitation 1.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Madera, CA (17 mi away); precipitation: Helm 2.7 Nne, CA (11 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.

936609a
San Joaquin, CA · 8 mi
936069a
Biola, CA · 8 mi
936689a
Tranquillity, CA · 10 mi
937239b
Fresno, CA · 11 mi
937069b
Fresno, CA · 12 mi
936279a
Helm, CA · 14 mi
936379a
Madera, CA · 14 mi
936529a
Raisin City, CA · 15 mi

California planting zones →

Questions about 93630

What planting zone is ZIP code 93630?

ZIP code 93630 (Kerman, 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 Kerman, CA?

The median last spring frost (32 °F) near 93630 is February 18; after March 18 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Madera station.

When is the first frost in Kerman, CA?

The median first fall frost near 93630 is November 27, giving a median frost-free growing season of 281 days.

When should I plant tomatoes in 93630?

Start tomato seeds indoors around Dec 24 – Jan 7 and set transplants outside around Feb 25 – Mar 11, one to three weeks after the median last frost.

How much rain and snow does 93630 get?

About 10.7 inches of precipitation a year (NOAA 1991–2020 normals, Helm 2.7 Nne station).

How hot do summers get in Kerman, CA?

The average high peaks at 96 °F in July, with about 100 days a year at 90 °F or more.

What kind of soil does 93630 have?

The USDA soil survey maps Fresno at the center of ZIP 93630: fine sandy loam, somewhat poorly drained, pH about 8.7 (alkaline).

Did spring come early in Kerman, CA in 2026?

Spring leaf-out near 93630 came on Jan 30 in 2026, 3 days earlier than the 1991–2020 average (Feb 2), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Kerman, CA?

Intermediate onions: the longest day near 93630 is 14 h 41 min, so day-neutral types bulb best; long-day varieties may not bulb fully.