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

Planting zone for 98322 — Burley, WA

ZIP code 98322 (Burley, Kitsap County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 11 and the first fall frost November 21.

Where ZIP 98322 is

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 frostMar 11
First frostNov 21
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 Burley, 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 Burley, WA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 11median — 50% chance of a later frost
Safe for tender plantsApril 2only 10% chance of frost after
First fall frostNovember 21median — 10% chance by Nov 3
Growing season254 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 13 and returns around December 11.

From the NOAA station Tacoma Narrows Airport, WA — 11 miles away, elevation 292 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 98322

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 28 – Feb 11
SpinachSow outdoors · Jan 28 – Feb 18
Broccoli, cabbageStart indoors · Dec 31 – Jan 14
Broccoli, cabbageTransplant · Feb 18 – Mar 4
Onion setsPlant outdoors · Feb 11 – Feb 25
PotatoesPlant outdoors · Feb 18 – Mar 4
LettuceSow outdoors · Feb 11 – Feb 25
Carrots, beetsSow outdoors · Feb 18 – Mar 4
TomatoesStart indoors · Jan 14 – Jan 28
TomatoesTransplant · Mar 18 – Apr 1
Peppers, eggplantStart indoors · Dec 31 – Jan 14
Peppers, eggplantTransplant · Mar 25 – Apr 8
BeansSow outdoors · Mar 18 – Apr 1
Sweet cornSow outdoors · Mar 18 – Apr 1
Cucumbers, squashSow outdoors · Mar 18 – Apr 1
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 11) 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 98322 came on Feb 18 — 3 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).

Soil in Burley, WA

The soil mapped at the center of ZIP 98322 is Norma — ashy fine sandy loam, poorly drained.

TextureAshy fine sandy loamdrains and warms fast; dries out and needs more feeding
pH5.8moderately acidic; most vegetables like 6.0–7.0
DrainagePoorly drainedconsider raised beds
Organic matter7.5%high
Hydrologic groupB/Dmoderate when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Norma fine sandy loam.

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 98322; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Burley, WA

Summer high76 °Faverage high, July
Winter low36 °Faverage low, January
Hot days2days a year at 90 °F or more
Freezing nights21nights a year at 32 °F or less
Growing degree days1,896base 50 °F — the season’s usable heat
Longest day15 h 57 mindaylight on June 21
Shortest day8 h 27 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation52.7 inper year, rain and melted snow

Average high and low, by month

30°40°50°60°70°80°90°32 °FJanuary: average high 46 °F, low 36 °F 46°36° JanFebruary: average high 48 °F, low 37 °F 48°37° FebMarch: average high 53 °F, low 39 °F 53°39° MarApril: average high 58 °F, low 41 °F 58°41° AprMay: average high 65 °F, low 47 °F 65°47° MayJune: average high 70 °F, low 51 °F 70°51° JunJuly: average high 76 °F, low 54 °F 76°54° JulAugust: average high 76 °F, low 54 °F 76°54° AugSeptember: average high 70 °F, low 51 °F 70°51° SepOctober: average high 59 °F, low 46 °F 59°46° OctNovember: average high 51 °F, low 40 °F 51°40° NovDecember: average high 46 °F, low 36 °F 46°36° Dec

Precipitation by month inches

0″2″4″6″8″January: 8.30 in precipitation 8.3 JanFebruary: 5.21 in precipitation 5.2 FebMarch: 5.71 in precipitation 5.7 MarApril: 3.98 in precipitation 4.0 AprMay: 2.13 in precipitation 2.1 MayJune: 1.49 in precipitation 1.5 JunJuly: 0.71 in precipitation 0.7 JulAugust: 1.11 in precipitation 1.1 AugSeptember: 1.70 in precipitation 1.7 SepOctober: 5.22 in precipitation 5.2 OctNovember: 8.46 in precipitation 8.5 NovDecember: 8.67 in precipitation, 0.3 in snowfall 8.7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Tacoma Narrows Airport, WA (11 mi away); precipitation: Wauna 3 W, WA (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

983958b
Wauna, WA · 3 mi
983598b
Olalla, WA · 3 mi
983678b
Port Orchard, WA · 3 mi
983328b
Gig Harbor, WA · 4 mi
983298b
Gig Harbor, WA · 7 mi
980709a
Vashon, WA · 7 mi
980139a
Burton, WA · 8 mi
983849a
South Colby, WA · 8 mi

Washington planting zones →

Questions about 98322

What planting zone is ZIP code 98322?

ZIP code 98322 (Burley, 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 Burley, WA?

The median last spring frost (32 °F) near 98322 is March 11; after April 2 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Tacoma Narrows Airport station.

When is the first frost in Burley, WA?

The median first fall frost near 98322 is November 21, giving a median frost-free growing season of 254 days.

When should I plant tomatoes in 98322?

Start tomato seeds indoors around Jan 14 – Jan 28 and set transplants outside around Mar 18 – Apr 1, one to three weeks after the median last frost.

How much rain and snow does 98322 get?

About 52.7 inches of precipitation a year (NOAA 1991–2020 normals, Wauna 3 W station).

How hot do summers get in Burley, WA?

The average high peaks at 76 °F in July, with about 2 days a year at 90 °F or more.

What kind of soil does 98322 have?

The USDA soil survey maps Norma at the center of ZIP 98322: ashy fine sandy loam, poorly drained, pH about 5.8 (moderately acidic).

Did spring come early in Burley, WA in 2026?

Spring leaf-out near 98322 came on Feb 18 in 2026, 3 days earlier than the 1991–2020 average (Feb 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Burley, WA?

Long-day onions: the longest day near 98322 is 15 h 57 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 98322 change?

Yes. The 2012 USDA map put 98322 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.