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

Planting zone for 93308 — Bakersfield, CA

ZIP code 93308 (Bakersfield, Kern County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F.

Where ZIP 93308 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 frostrare
First frostrare
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 Bakersfield, 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

A 32 °F frost doesn't happen here in most winters. At the nearest station (NOAA station Bakersfield Airport, CA — 10 miles away, elevation 489 ft) the median growing season is 334 days. When frost does come, it is a midwinter night or two; cover tender plants when a freeze is forecast.

Frost data: NOAA NCEI U.S. Climate Normals 1991–2020.

When spring arrived in 2026

In 2026, spring leaf-out near 93308 came on Jan 30 — about the same time as the 1991–2020 average (Jan 29).

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 Bakersfield, CA

The soil mapped at the center of ZIP 93308 is Chanac — loam, well drained.

TextureLoama good balance for most vegetables
pH7.9alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.75%low — add compost
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Chanac-Pleito-Premier association, 20 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 93308; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Bakersfield, CA

Summer high98 °Faverage high, July
Winter low40 °Faverage low, December
Hot days112days a year at 90 °F or more
Freezing nights10nights a year at 32 °F or less
Growing degree days6,145base 50 °F — the season’s usable heat
Longest day14 h 34 mindaylight on June 21
Shortest day9 h 45 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation6.4 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 59 °F, low 41 °F 59°41° JanFebruary: average high 64 °F, low 43 °F 64°43° FebMarch: average high 70 °F, low 47 °F 70°47° MarApril: average high 76 °F, low 51 °F 76°51° AprMay: average high 84 °F, low 58 °F 84°58° MayJune: average high 92 °F, low 65 °F 92°65° JunJuly: average high 98 °F, low 71 °F 98°71° JulAugust: average high 97 °F, low 70 °F 97°70° AugSeptember: average high 91 °F, low 65 °F 91°65° SepOctober: average high 80 °F, low 55 °F 80°55° OctNovember: average high 67 °F, low 45 °F 67°45° NovDecember: average high 59 °F, low 40 °F 59°40° Dec

Precipitation by month inches

0″1″2″January: 1.19 in precipitation, 0.1 in snowfall 1.2 JanFebruary: 1.18 in precipitation 1.2 FebMarch: 1.15 in precipitation 1.1 MarApril: 0.60 in precipitation 0.6 AprMay: 0.25 in precipitation 0.3 MayJune: 0.05 in precipitation 0.1 JunJuly: 0.00 in precipitation 0.0 JulAugust: 0.00 in precipitation 0.0 AugSeptember: 0.05 in precipitation 0.1 SepOctober: 0.28 in precipitation 0.3 OctNovember: 0.51 in precipitation 0.5 NovDecember: 1.10 in precipitation 1.1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Bakersfield Airport, CA (10 mi away); precipitation: Bakersfield Airport, CA (10 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9b.

933069b
Bakersfield, CA · 11 mi
933059b
Bakersfield, CA · 11 mi
933019b
Bakersfield, CA · 12 mi
932879b
Woody, CA · 12 mi
933029b
Bakersfield, CA · 13 mi
933849b
Bakersfield, CA · 13 mi
933129b
Bakersfield, CA · 14 mi
932209b
Edison, CA · 15 mi

All 22 ZIP codes in Bakersfield → · California planting zones →

Questions about 93308

What planting zone is ZIP code 93308?

ZIP code 93308 (Bakersfield, 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).

How much rain and snow does 93308 get?

About 6.4 inches of precipitation a year (NOAA 1991–2020 normals, Bakersfield Airport station).

How hot do summers get in Bakersfield, 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 93308 have?

The USDA soil survey maps Chanac at the center of ZIP 93308: loam, well drained, pH about 7.9 (alkaline).

Did spring come early in Bakersfield, CA in 2026?

Spring leaf-out near 93308 came on Jan 30 in 2026, about the same as the 1991–2020 average (Jan 29), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Bakersfield, CA?

Intermediate onions: the longest day near 93308 is 14 h 34 min, so day-neutral types bulb best; long-day varieties may not bulb fully.