Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 98586 — South Bend, WA

ZIP code 98586 (South Bend, Pacific County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is April 26 and the first fall frost October 17.

Where ZIP 98586 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.

Zone9a20 to 25 °F

Coldest night−6.7 to −3.9 °C

Last frostApr 26

First frostOct 17

2012 zone8b

Was 8b 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 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for South Bend, WA…

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 South Bend, WA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostApril 26median — 50% chance of a later frost

Safe for tender plantsMay 12only 10% chance of frost after

First fall frostOctober 17median — 10% chance by Oct 1

Growing season177 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 27 and returns around November 7.

From the NOAA station Raymond 2 S, WA — 9 miles away, elevation 30 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 98586

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 15 – Mar 29

SpinachSow outdoors · Mar 15 – Apr 5

Broccoli, cabbageStart indoors · Feb 15 – Mar 1

Broccoli, cabbageTransplant · Apr 5 – Apr 19

Onion setsPlant outdoors · Mar 29 – Apr 12

PotatoesPlant outdoors · Apr 5 – Apr 19

LettuceSow outdoors · Mar 29 – Apr 12

Carrots, beetsSow outdoors · Apr 5 – Apr 19

TomatoesStart indoors · Mar 1 – Mar 15

TomatoesTransplant · May 3 – May 17

Peppers, eggplantStart indoors · Feb 15 – Mar 1

Peppers, eggplantTransplant · May 10 – May 24

BeansSow outdoors · May 3 – May 17

Sweet cornSow outdoors · May 3 – May 17

Cucumbers, squashSow outdoors · May 3 – May 17

Fall lettuce, spinachSow outdoors · Aug 22 – Sep 5

GarlicPlant cloves · Oct 3 – Nov 7

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 26) and first fall frost (Oct 17) 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 98586 came on Feb 5 — 21 days earlier than the 1991–2020 average (Feb 26).

average
Feb 262026
Feb 5

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 South Bend, WA

The soil mapped at the center of ZIP 98586 is Knappton — silt loam, well drained.

TextureSilt loama good balance for most vegetables

pH5.6moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter12.5%high

Hydrologic groupBwater soaks in moderately

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Knappton silt loam, 8 to 30 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 98586; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in South Bend, WA

Summer high73 °Faverage high, August

Winter low32 °Faverage low, February

Hot days3days a year at 90 °F or more

Freezing nights82nights a year at 32 °F or less

Growing degree days1,397base 50 °F — the season’s usable heat

Longest day15 h 50 mindaylight on June 21

Shortest day8 h 34 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation83.7 inper year, rain and melted snow

Snowfall1 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Raymond 2 S, WA (9 mi away); precipitation: Raymond 2 S, WA (9 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

985279a

Bay Center, WA · 5 mi

986379a

Nahcotta, WA · 10 mi

986419a

Oysterville, WA · 10 mi

Ocean Park, WA · 11 mi

Washington planting zones →

Questions about 98586

What planting zone is ZIP code 98586?

ZIP code 98586 (South Bend, WA) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in South Bend, WA?

The median last spring frost (32 °F) near 98586 is April 26; after May 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Raymond 2 S station.

When is the first frost in South Bend, WA?

The median first fall frost near 98586 is October 17, giving a median frost-free growing season of 177 days.

When should I plant tomatoes in 98586?

Start tomato seeds indoors around Mar 1 – Mar 15 and set transplants outside around May 3 – May 17, one to three weeks after the median last frost.

How much rain and snow does 98586 get?

About 83.7 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Raymond 2 S station).

How hot do summers get in South Bend, WA?

The average high peaks at 73 °F in August, with about 3 days a year at 90 °F or more.

What kind of soil does 98586 have?

The USDA soil survey maps Knappton at the center of ZIP 98586: silt loam, well drained, pH about 5.6 (moderately acidic).

Did spring come early in South Bend, WA in 2026?

Spring leaf-out near 98586 came on Feb 5 in 2026, 21 days earlier than the 1991–2020 average (Feb 26), according to the USA National Phenology Network Spring Index.

What kind of onions grow in South Bend, WA?

Long-day onions: the longest day near 98586 is 15 h 50 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 98586 change?

Yes. The 2012 USDA map put 98586 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.