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

Planting zone for 95459 — Manchester, CA

ZIP code 95459 (Manchester, Mendocino County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is March 5 and the first fall frost November 21.

Where ZIP 95459 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 frostMar 5
First frostNov 21
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 Manchester, 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 Manchester, CA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 5median — 50% chance of a later frost
Safe for tender plantsApril 7only 10% chance of frost after
First fall frostNovember 21median — 10% chance by Nov 2
Growing season259 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 27 and returns around December 5.

From the NOAA station Ukiah Municipal Airport, CA — 24 miles away, elevation 600 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 95459

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 22 – Feb 5
SpinachSow outdoors · Jan 22 – Feb 12
Broccoli, cabbageStart indoors · Dec 25 – Jan 8
Broccoli, cabbageTransplant · Feb 12 – Feb 26
Onion setsPlant outdoors · Feb 5 – Feb 19
PotatoesPlant outdoors · Feb 12 – Feb 26
LettuceSow outdoors · Feb 5 – Feb 19
Carrots, beetsSow outdoors · Feb 12 – Feb 26
TomatoesStart indoors · Jan 8 – Jan 22
TomatoesTransplant · Mar 12 – Mar 26
Peppers, eggplantStart indoors · Dec 25 – Jan 8
Peppers, eggplantTransplant · Mar 19 – Apr 2
BeansSow outdoors · Mar 12 – Mar 26
Sweet cornSow outdoors · Mar 12 – Mar 26
Cucumbers, squashSow outdoors · Mar 12 – Mar 26
Fall lettuce, spinachSow outdoors · Sep 26 – Oct 10
GarlicPlant cloves · Nov 7 – Dec 12
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 5) and first fall frost (Nov 21) 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 95459 came on Jan 19 — 12 days earlier than the 1991–2020 average (Jan 31).

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 Manchester, CA

The soil mapped at the center of ZIP 95459 is Yellowhound — slightly decomposed plant material, well drained.

TextureSlightly decomposed plant materialtop layer
pH6.0slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter75%high
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Yellowhound-Kibesillah complex, 50 to 75 percent slopes, MLRA 4B.

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 95459; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Manchester, CA

Summer high94 °Faverage high, July
Winter low36 °Faverage low, December
Hot days83days a year at 90 °F or more
Freezing nights36nights a year at 32 °F or less
Growing degree days3,991base 50 °F — the season’s usable heat
Longest day14 h 54 mindaylight on June 21
Shortest day9 h 26 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation42.3 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°100°32 °FJanuary: average high 58 °F, low 37 °F 58°37° JanFebruary: average high 61 °F, low 39 °F 61°39° FebMarch: average high 65 °F, low 41 °F 65°41° MarApril: average high 69 °F, low 43 °F 69°43° AprMay: average high 78 °F, low 48 °F 78°48° MayJune: average high 86 °F, low 52 °F 86°52° JunJuly: average high 94 °F, low 56 °F 94°56° JulAugust: average high 94 °F, low 55 °F 94°55° AugSeptember: average high 89 °F, low 51 °F 89°51° SepOctober: average high 79 °F, low 45 °F 79°45° OctNovember: average high 65 °F, low 40 °F 65°40° NovDecember: average high 57 °F, low 36 °F 57°36° Dec

Precipitation by month inches

0″2″4″6″8″January: 7.63 in precipitation 7.6 JanFebruary: 7.51 in precipitation 7.5 FebMarch: 6.12 in precipitation 6.1 MarApril: 2.95 in precipitation 3.0 AprMay: 1.65 in precipitation 1.6 MayJune: 0.48 in precipitation 0.5 JunJuly: 0.07 in precipitation 0.1 JulAugust: 0.06 in precipitation 0.1 AugSeptember: 0.25 in precipitation 0.3 SepOctober: 2.31 in precipitation 2.3 OctNovember: 4.47 in precipitation 4.5 NovDecember: 8.77 in precipitation 8.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Ukiah Municipal Airport, CA (24 mi away); precipitation: Boonville 2.2 Wsw, CA (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9b.

954689b
Point Arena, CA · 4 mi
954669b
Philo, CA · 8 mi
954329b
Elk, CA · 9 mi
954459b
Gualala, CA · 12 mi
954159b
Boonville, CA · 13 mi
954639b
Navarro, CA · 15 mi
954949b
Yorkville, CA · 15 mi
954109b
Albion, CA · 19 mi

California planting zones →

Questions about 95459

What planting zone is ZIP code 95459?

ZIP code 95459 (Manchester, 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 Manchester, CA?

The median last spring frost (32 °F) near 95459 is March 5; after April 7 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Ukiah Municipal Airport station.

When is the first frost in Manchester, CA?

The median first fall frost near 95459 is November 21, giving a median frost-free growing season of 259 days.

When should I plant tomatoes in 95459?

Start tomato seeds indoors around Jan 8 – Jan 22 and set transplants outside around Mar 12 – Mar 26, one to three weeks after the median last frost.

How much rain and snow does 95459 get?

About 42.3 inches of precipitation a year (NOAA 1991–2020 normals, Boonville 2.2 Wsw station).

How hot do summers get in Manchester, CA?

The average high peaks at 94 °F in July, with about 83 days a year at 90 °F or more.

What kind of soil does 95459 have?

The USDA soil survey maps Yellowhound at the center of ZIP 95459: slightly decomposed plant material, well drained, pH about 6.0 (slightly acidic).

Did spring come early in Manchester, CA in 2026?

Spring leaf-out near 95459 came on Jan 19 in 2026, 12 days earlier than the 1991–2020 average (Jan 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Manchester, CA?

Intermediate onions: the longest day near 95459 is 14 h 54 min, so day-neutral types bulb best; long-day varieties may not bulb fully.