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

Planting zone for 95693 — Wilton, CA

ZIP code 95693 (Wilton, Sacramento County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F.

Where ZIP 95693 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 Wilton, 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 Sacramento 5 Ese, CA — 16 miles away, elevation 39 ft) the median growing season is 341 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 95693 came on Feb 1 — about the same time as the 1991–2020 average (Feb 1).

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 Wilton, CA

The soil mapped at the center of ZIP 95693 is Redding — loam, moderately well drained.

TextureLoama good balance for most vegetables
pH5.8moderately acidic; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter1%low — add compost
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Redding loam, 2 to 8 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 95693; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Wilton, CA

Summer high94 °Faverage high, July
Winter low41 °Faverage low, January
Hot days90days a year at 90 °F or more
Freezing nights4nights a year at 32 °F or less
Growing degree days5,115base 50 °F — the season’s usable heat
Longest day14 h 51 mindaylight on June 21
Shortest day9 h 29 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation17.8 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 57 °F, low 41 °F 57°41° JanFebruary: average high 62 °F, low 44 °F 62°44° FebMarch: average high 68 °F, low 47 °F 68°47° MarApril: average high 74 °F, low 49 °F 74°49° AprMay: average high 81 °F, low 54 °F 81°54° MayJune: average high 89 °F, low 59 °F 89°59° JunJuly: average high 94 °F, low 61 °F 94°61° JulAugust: average high 94 °F, low 61 °F 94°61° AugSeptember: average high 89 °F, low 59 °F 89°59° SepOctober: average high 79 °F, low 53 °F 79°53° OctNovember: average high 65 °F, low 45 °F 65°45° NovDecember: average high 56 °F, low 41 °F 56°41° Dec

Precipitation by month inches

0″1″2″3″4″January: 3.64 in precipitation 3.6 JanFebruary: 3.13 in precipitation 3.1 FebMarch: 2.57 in precipitation 2.6 MarApril: 1.51 in precipitation 1.5 AprMay: 0.87 in precipitation 0.9 MayJune: 0.16 in precipitation 0.2 JunJuly: 0.00 in precipitation 0.0 JulAugust: 0.03 in precipitation 0.0 AugSeptember: 0.12 in precipitation 0.1 SepOctober: 0.88 in precipitation 0.9 OctNovember: 1.63 in precipitation 1.6 NovDecember: 3.27 in precipitation 3.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Sacramento 5 Ese, CA (16 mi away); precipitation: Acampo 5ne, CA (12 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9b.

956249b
Elk Grove, CA · 5 mi
958309b
Sacramento, CA · 7 mi
958299b
Sacramento, CA · 8 mi
957599b
Elk Grove, CA · 8 mi
956329b
Galt, CA · 9 mi
956389b
Herald, CA · 9 mi
956839b
Sloughhouse, CA · 10 mi
956559b
Mather, CA · 11 mi

California planting zones →

Questions about 95693

What planting zone is ZIP code 95693?

ZIP code 95693 (Wilton, 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 95693 get?

About 17.8 inches of precipitation a year (NOAA 1991–2020 normals, Acampo 5ne station).

How hot do summers get in Wilton, CA?

The average high peaks at 94 °F in July, with about 90 days a year at 90 °F or more.

What kind of soil does 95693 have?

The USDA soil survey maps Redding at the center of ZIP 95693: loam, moderately well drained, pH about 5.8 (moderately acidic).

Did spring come early in Wilton, CA in 2026?

Spring leaf-out near 95693 came on Feb 1 in 2026, about the same as the 1991–2020 average (Feb 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Wilton, CA?

Intermediate onions: the longest day near 95693 is 14 h 51 min, so day-neutral types bulb best; long-day varieties may not bulb fully.