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

Planting zone for 98684 — Vancouver, WA

ZIP code 98684 (Vancouver, Clark County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 13 and the first fall frost November 19.

Where ZIP 98684 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 13
First frostNov 19
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 Vancouver, 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 Vancouver, WA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 13median — 50% chance of a later frost
Safe for tender plantsApril 1only 10% chance of frost after
First fall frostNovember 19median — 10% chance by Oct 29
Growing season247 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 16 and returns around December 5.

From the NOAA station Portland Intl Airport, OR — 5 miles away, elevation 20 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 98684

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 30 – Feb 13
SpinachSow outdoors · Jan 30 – Feb 20
Broccoli, cabbageStart indoors · Jan 2 – Jan 16
Broccoli, cabbageTransplant · Feb 20 – Mar 6
Onion setsPlant outdoors · Feb 13 – Feb 27
PotatoesPlant outdoors · Feb 20 – Mar 6
LettuceSow outdoors · Feb 13 – Feb 27
Carrots, beetsSow outdoors · Feb 20 – Mar 6
TomatoesStart indoors · Jan 16 – Jan 30
TomatoesTransplant · Mar 20 – Apr 3
Peppers, eggplantStart indoors · Jan 2 – Jan 16
Peppers, eggplantTransplant · Mar 27 – Apr 10
BeansSow outdoors · Mar 20 – Apr 3
Sweet cornSow outdoors · Mar 20 – Apr 3
Cucumbers, squashSow outdoors · Mar 20 – Apr 3
Fall lettuce, spinachSow outdoors · Sep 24 – Oct 8
GarlicPlant cloves · Nov 5 – Dec 10
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 13) and first fall frost (Nov 19) 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 98684 came on Feb 17 — 4 days earlier than the 1991–2020 average (Feb 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).

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.

Trees 32

Alaska cedar75 ft · blooms mid spring · low shade tolerance · to −22 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fbigleaf maple60 ft · blooms mid spring · medium shade tolerance · to −14 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fboxelder60 ft · blooms early spring · low shade tolerance · to −46 °F

Shrubs 114

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falpine laurel1 ft · blooms late spring · low shade tolerance · to −28 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °FBarclay's willow15 ft · high shade tolerance · to −43 °F

Wildflowers & perennials 293

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °FAmerican bistort1.5 ft · blooms mid spring · high shade tolerance · to −38 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °F

Grasses 157

Alaska brome5 ft · blooms late spring · low shade tolerance · to −18 °FAlaska oniongrass3 ft · blooms mid spring · low shade tolerance · to −33 °Falkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °FAmerican beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °F

Vines 3

riverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Ftrumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °Fwestern white clematis1 ft · blooms mid summer · medium shade tolerance · to −38 °F

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 Vancouver, WA.

Soil in Vancouver, WA

The soil mapped at the center of ZIP 98684 is Lauren — gravelly medial loam, well drained.

TextureGravelly medial loama good balance for most vegetables
pH6.1slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2.5%moderate
Hydrologic groupBwater soaks in moderately
Farmland classPrime farmland if irrigatedUSDA classification

Map unit: Lauren gravelly loam, 0 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 98684; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Vancouver, WA

Summer high82 °Faverage high, July
Winter low36 °Faverage low, January
Hot days15days a year at 90 °F or more
Freezing nights32nights a year at 32 °F or less
Growing degree days2,832base 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)
Precipitation47.1 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°32 °FJanuary: average high 48 °F, low 36 °F 48°36° JanFebruary: average high 52 °F, low 37 °F 52°37° FebMarch: average high 57 °F, low 40 °F 57°40° MarApril: average high 62 °F, low 44 °F 62°44° AprMay: average high 69 °F, low 49 °F 69°49° MayJune: average high 74 °F, low 54 °F 74°54° JunJuly: average high 82 °F, low 59 °F 82°59° JulAugust: average high 82 °F, low 59 °F 82°59° AugSeptember: average high 77 °F, low 54 °F 77°54° SepOctober: average high 64 °F, low 47 °F 64°47° OctNovember: average high 54 °F, low 41 °F 54°41° NovDecember: average high 47 °F, low 36 °F 47°36° Dec

Precipitation by month inches

0″2″4″6″8″January: 6.78 in precipitation 6.8 JanFebruary: 4.28 in precipitation 4.3 FebMarch: 5.03 in precipitation 5.0 MarApril: 4.06 in precipitation 4.1 AprMay: 3.18 in precipitation 3.2 MayJune: 2.32 in precipitation 2.3 JunJuly: 0.63 in precipitation 0.6 JulAugust: 0.64 in precipitation 0.6 AugSeptember: 1.88 in precipitation 1.9 SepOctober: 4.23 in precipitation 4.2 OctNovember: 6.75 in precipitation 6.8 NovDecember: 7.37 in precipitation 7.4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Portland Intl Airport, OR (5 mi away); precipitation: Cascade Park East 0.2 Ene, WA (2 mi away). 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.

986838b
Vancouver, WA · 2 mi
986648b
Vancouver, WA · 3 mi
986828b
Vancouver, WA · 3 mi
972549a
Portland, OR · 4 mi
986628b
Vancouver, WA · 5 mi
972309a
Portland, OR · 5 mi
986618b
Vancouver, WA · 5 mi
972189a
Portland, OR · 6 mi

All 14 ZIP codes in Vancouver → · Washington planting zones →

Questions about 98684

What planting zone is ZIP code 98684?

ZIP code 98684 (Vancouver, 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 Vancouver, WA?

The median last spring frost (32 °F) near 98684 is March 13; after April 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Portland Intl Airport station.

When is the first frost in Vancouver, WA?

The median first fall frost near 98684 is November 19, giving a median frost-free growing season of 247 days.

When should I plant tomatoes in 98684?

Start tomato seeds indoors around Jan 16 – Jan 30 and set transplants outside around Mar 20 – Apr 3, one to three weeks after the median last frost.

How much rain and snow does 98684 get?

About 47.1 inches of precipitation a year (NOAA 1991–2020 normals, Cascade Park East 0.2 Ene station).

How hot do summers get in Vancouver, WA?

The average high peaks at 82 °F in July, with about 15 days a year at 90 °F or more.

What kind of soil does 98684 have?

The USDA soil survey maps Lauren at the center of ZIP 98684: gravelly medial loam, well drained, pH about 6.1 (slightly acidic).

Did spring come early in Vancouver, WA in 2026?

Spring leaf-out near 98684 came on Feb 17 in 2026, 4 days earlier than the 1991–2020 average (Feb 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Vancouver, WA?

Long-day onions: the longest day near 98684 is 15 h 42 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).