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

Planting zone for 92201 — Indio, CA

ZIP code 92201 (Indio, Riverside County) is in USDA zone 10a: the coldest winter night averages 30 to 35 °F.

Where ZIP 92201 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.

Zone10a30 to 35 °F
Coldest night−1.1 to 1.7 °C
Last frostrare
First frostrare
2012 zone9b

Was 9b 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 10a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Indio, 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 Indio Fire Stn, CA — within 1 mile, elevation -20 ft) the median growing season is 365 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 92201 came on Jan 17 — 4 days earlier than the 1991–2020 average (Jan 21).

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 Indio, CA

The soil mapped at the center of ZIP 92201 is Gilman — fine sandy loam, well drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding
pH8.2alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.5%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classPrime farmland if irrigatedUSDA classification

Map unit: Gilman fine sandy loam, 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 92201; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Indio, CA

Summer high106 °Faverage high, July
Winter low45 °Faverage low, December
Hot days184days a year at 90 °F or more
Freezing nights1nights a year at 32 °F or less
Growing degree days9,508base 50 °F — the season’s usable heat
Longest day14 h 24 mindaylight on June 21
Shortest day9 h 55 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation2.9 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°110°120°32 °FJanuary: average high 70 °F, low 47 °F 70°47° JanFebruary: average high 73 °F, low 51 °F 73°51° FebMarch: average high 80 °F, low 57 °F 80°57° MarApril: average high 86 °F, low 63 °F 86°63° AprMay: average high 93 °F, low 69 °F 93°69° MayJune: average high 102 °F, low 77 °F 102°77° JunJuly: average high 106 °F, low 83 °F 106°83° JulAugust: average high 105 °F, low 83 °F 105°83° AugSeptember: average high 101 °F, low 77 °F 101°77° SepOctober: average high 91 °F, low 66 °F 91°66° OctNovember: average high 78 °F, low 53 °F 78°53° NovDecember: average high 69 °F, low 45 °F 69°45° Dec

Precipitation by month inches

0″1″January: 0.65 in precipitation 0.7 JanFebruary: 0.59 in precipitation 0.6 FebMarch: 0.32 in precipitation 0.3 MarApril: 0.07 in precipitation 0.1 AprMay: 0.02 in precipitation 0.0 MayJune: 0.00 in precipitation 0.0 JunJuly: 0.05 in precipitation 0.1 JulAugust: 0.26 in precipitation 0.3 AugSeptember: 0.13 in precipitation 0.1 SepOctober: 0.15 in precipitation 0.1 OctNovember: 0.19 in precipitation 0.2 NovDecember: 0.49 in precipitation 0.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Indio Fire Stn, CA (within 1 mile); precipitation: Indio Fire Stn, CA (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 10a.

All 3 ZIP codes in Indio → · California planting zones →

Questions about 92201

What planting zone is ZIP code 92201?

ZIP code 92201 (Indio, CA) is in USDA hardiness zone 10a on the 2023 map: the coldest night of an average winter reaches 30 to 35 °F (−1.1 to 1.7 °C).

How much rain and snow does 92201 get?

About 2.9 inches of precipitation a year (NOAA 1991–2020 normals, Indio Fire Stn station).

How hot do summers get in Indio, CA?

The average high peaks at 106 °F in July, with about 184 days a year at 90 °F or more.

What kind of soil does 92201 have?

The USDA soil survey maps Gilman at the center of ZIP 92201: fine sandy loam, well drained, pH about 8.2 (alkaline).

Did spring come early in Indio, CA in 2026?

Spring leaf-out near 92201 came on Jan 17 in 2026, 4 days earlier than the 1991–2020 average (Jan 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Indio, CA?

Intermediate onions: the longest day near 92201 is 14 h 24 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 92201 change?

Yes. The 2012 USDA map put 92201 in zone 9b; the 2023 map puts it in zone 10a. The newer map uses 1991–2020 data and more weather stations.