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

Planting zone for 93647 — Orosi, CA

ZIP code 93647 (Orosi, Tulare County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is June 1 and the first fall frost October 7.

Where ZIP 93647 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 frostJun 1
First frostOct 7
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 Orosi, 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 Orosi, 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 — 15 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 93647

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 93647 came on Jan 22 — 8 days earlier than the 1991–2020 average (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 Orosi, CA

The soil mapped at the center of ZIP 93647 is Blasingame — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding
pH6.7neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.5%low — add compost
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Blasingame-Rock outcrop complex, 9 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 93647; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Orosi, 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 40 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
Precipitation41.7 inper year, rain and melted snow
Snowfall186 inper year; 140 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 46 °F, low 26 °F 46°26° JanFebruary: average high 46 °F, low 25 °F 46°25° FebMarch: average high 48 °F, low 27 °F 48°27° MarApril: average high 52 °F, low 30 °F 52°30° AprMay: average high 60 °F, low 38 °F 60°38° MayJune: average high 71 °F, low 46 °F 71°46° JunJuly: average high 79 °F, low 53 °F 79°53° JulAugust: average high 79 °F, low 52 °F 79°52° AugSeptember: average high 73 °F, low 47 °F 73°47° SepOctober: average high 63 °F, low 39 °F 63°39° OctNovember: average high 53 °F, low 32 °F 53°32° NovDecember: average high 46 °F, low 25 °F 46°25° Dec

Precipitation by month inches · ❄ = snowfall

0″2″4″6″8″January: 8.03 in precipitation, 37.7 in snowfall 8.0❄38 JanFebruary: 7.33 in precipitation, 44.8 in snowfall 7.3❄45 FebMarch: 7.81 in precipitation, 35.1 in snowfall 7.8❄35 MarApril: 3.58 in precipitation, 20 in snowfall 3.6❄20 AprMay: 1.37 in precipitation, 4.9 in snowfall 1.4❄5 MayJune: 0.53 in precipitation, 0.6 in snowfall 0.5❄1 JunJuly: 0.27 in precipitation 0.3 JulAugust: 0.16 in precipitation 0.2 AugSeptember: 0.32 in precipitation 0.3 SepOctober: 2.37 in precipitation, 3.5 in snowfall 2.4❄4 OctNovember: 3.26 in precipitation, 8.6 in snowfall 3.3❄9 NovDecember: 6.63 in precipitation, 30.8 in snowfall 6.6❄31 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Grant Grove, CA (15 mi away); precipitation: Grant Grove, CA (15 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

936469b
Orange Cove, CA · 7 mi
936759a
Yokuts, CA · 9 mi
936159b
Cutler, CA · 9 mi
936709b
Yettem, CA · 9 mi
936669b
Sultana, CA · 10 mi
936419a
Miramonte, CA · 10 mi
932869b
Woodlake, CA · 11 mi
936219a
Dunlap, CA · 11 mi

California planting zones →

Questions about 93647

What planting zone is ZIP code 93647?

ZIP code 93647 (Orosi, 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 Orosi, CA?

The median last spring frost (32 °F) near 93647 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 Orosi, CA?

The median first fall frost near 93647 is October 7, giving a median frost-free growing season of 132 days.

When should I plant tomatoes in 93647?

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 93647 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 Orosi, 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 93647 have?

The USDA soil survey maps Blasingame at the center of ZIP 93647: sandy loam, well drained, pH about 6.7 (neutral).

Did spring come early in Orosi, CA in 2026?

Spring leaf-out near 93647 came on Jan 22 in 2026, 8 days earlier than the 1991–2020 average (Jan 30), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Orosi, CA?

Intermediate onions: the longest day near 93647 is 14 h 40 min, so day-neutral types bulb best; long-day varieties may not bulb fully.