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

Planting zone for 98607 — Camas, WA

ZIP code 98607 (Camas, Clark County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 26 and the first fall frost November 17.

Where ZIP 98607 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.

Zone8b15 to 20 °F

Coldest night−9.4 to −6.7 °C

Last frostMar 26

First frostNov 17

2012 zone8b

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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Camas, 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 Camas, WA

JanFebMarAprMayJunJulAugSepOctNovDec

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

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

Safe for tender plantsApril 21only 10% chance of frost after

First fall frostNovember 17median — 10% chance by Oct 26

Growing season237 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 22 and returns around December 7.

From the NOAA station Troutdale, OR — 6 miles away, elevation 33 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 98607

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 12 – Feb 26

SpinachSow outdoors · Feb 12 – Mar 5

Broccoli, cabbageStart indoors · Jan 15 – Jan 29

Broccoli, cabbageTransplant · Mar 5 – Mar 19

Onion setsPlant outdoors · Feb 26 – Mar 12

PotatoesPlant outdoors · Mar 5 – Mar 19

LettuceSow outdoors · Feb 26 – Mar 12

Carrots, beetsSow outdoors · Mar 5 – Mar 19

TomatoesStart indoors · Jan 29 – Feb 12

TomatoesTransplant · Apr 2 – Apr 16

Peppers, eggplantStart indoors · Jan 15 – Jan 29

Peppers, eggplantTransplant · Apr 9 – Apr 23

BeansSow outdoors · Apr 2 – Apr 16

Sweet cornSow outdoors · Apr 2 – Apr 16

Cucumbers, squashSow outdoors · Apr 2 – Apr 16

Fall lettuce, spinachSow outdoors · Sep 22 – Oct 6

GarlicPlant cloves · Nov 3 – Dec 8

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 26) and first fall frost (Nov 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 98607 came on Feb 23 — about the same time as the 1991–2020 average (Feb 24).

average
Feb 242026
Feb 23

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).

Native plants for zone 8b in Washington

614 plants native to the lower 48 states, recorded in Washington, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Camas, WA.

Soil in Camas, WA

The soil mapped at the center of ZIP 98607 is Hesson — clay loam, well drained.

TextureClay loamholds water and nutrients; slow to drain and warm up

pH5.3strongly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2.5%moderate

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Hesson clay loam, 30 to 55 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 98607; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Camas, WA

Summer high81 °Faverage high, July

Winter low35 °Faverage low, January

Hot days18days a year at 90 °F or more

Freezing nights40nights a year at 32 °F or less

Growing degree days2,453base 50 °F — the season’s usable heat

Longest day15 h 42 mindaylight on June 21

Shortest day8 h 41 mindaylight on December 21

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

Precipitation58.8 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Troutdale, OR (6 mi away); precipitation: Washougal 3.7 Nnw, WA (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

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

Brush Prairie, WA · 7 mi

Washington planting zones →

Questions about 98607

What planting zone is ZIP code 98607?

ZIP code 98607 (Camas, WA) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Camas, WA?

The median last spring frost (32 °F) near 98607 is March 26; after April 21 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Troutdale station.

When is the first frost in Camas, WA?

The median first fall frost near 98607 is November 17, giving a median frost-free growing season of 237 days.

When should I plant tomatoes in 98607?

Start tomato seeds indoors around Jan 29 – Feb 12 and set transplants outside around Apr 2 – Apr 16, one to three weeks after the median last frost.

How much rain and snow does 98607 get?

About 58.8 inches of precipitation a year (NOAA 1991–2020 normals, Washougal 3.7 Nnw station).

How hot do summers get in Camas, WA?

The average high peaks at 81 °F in July, with about 18 days a year at 90 °F or more.

What kind of soil does 98607 have?

The USDA soil survey maps Hesson at the center of ZIP 98607: clay loam, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Camas, WA in 2026?

Spring leaf-out near 98607 came on Feb 23 in 2026, about the same as the 1991–2020 average (Feb 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Camas, WA?

Long-day onions: the longest day near 98607 is 15 h 42 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).