When is the last frost in Puyallup, WA?

The average last spring frost (50% probability of 32°F) in Puyallup is around April 11, based on NOAA/NCEI 1991–2020 normals at the Mcmillin Rsvr, WA station (3.3 mi away). Half of years it falls outside that date, so wait 1–2 weeks past it before setting out frost-tender plants.

When is the first fall frost in Puyallup?

The average first fall frost in Puyallup, WA is around October 30, giving roughly a 202-day frost-free growing season.

What planting zone is Puyallup, WA?

Puyallup is in USDA plant hardiness zone 8b (average annual extreme minimum temperature 15 to 20°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Puyallup?

In Puyallup, WA the warmest month is August (avg high 76.5°F) and the coldest is December (avg low 32.9°F). It averages about 45.1″ of precipitation a year and 5.6″ of snow.

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Puyallup, WA Planting Calendar & Frost Dates

USDA hardiness zone 8b · ZIP 98373 · elevation 177′ · NOAA & USDA data

Puyallup is in USDA hardiness zone 8b (winters can dip to 15 to 20°F), with a growing season of about 202 days between the average last spring frost (April 11) and first fall frost (October 30). The warmest month is August (avg high 76.5°F); the coldest is December (avg low 32.9°F). It averages 45.1″ of precipitation a year and 5.6″ of snow, mostly mid-winter. Start cool-season crops several weeks before the last frost; wait until after it for tomatoes, peppers and other tender crops.

Hardiness zone

min temp 15 to 20°F

Last spring frost

April 11

avg (50% prob, 32°F)

First fall frost

October 30

avg (50% prob, 32°F)

Growing season

202 days

frost-free window

Warmest month

August

avg high 76.5°F

Month-by-month typical weather in Puyallup

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at Mcmillin Rsvr, WA (3.3 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	46.1	33.3	39.7	6.1	1.5
February	48	33.1	40.6	4.3	0.5
March	52.4	35.7	44	4.8	0.6
April	57.3	38.7	48	3.9	0
May	64.3	44.5	54.4	3	0
June	69	49	59	2.3	0
July	75.7	52.4	64	0.9	0
August	76.5	52.6	64.5	0.9	0
September	69.6	48.2	58.9	1.8	0
October	59.1	41.7	50.4	4.1	0
November	50.3	36.1	43.2	7.1	1.5
December	45	32.9	39	6	1.5

What to plant when in Puyallup

Crop	Season	What to do & when
Tomatoes	warm	Start seeds indoors: February 28 · Transplant out: April 18
Peppers	warm	Start seeds indoors: February 14 · Transplant out: April 25
Cucumbers	warm	Direct sow: April 18
Zucchini / squash	warm	Direct sow: April 18
Bush beans	warm	Direct sow: April 18
Sweet corn	warm	Direct sow: April 18
Basil	warm	Transplant out: April 18
Peas	cool	Sow (spring): March 7 · Sow (fall): September 4
Spinach	cool	Sow (spring): February 28 · Sow (fall): September 4
Lettuce	cool	Sow (spring): March 14 · Sow (fall): September 4
Kale	cool	Transplant (spring): March 21 · Sow (fall): August 21
Broccoli	cool	Transplant (spring): March 28
Carrots	cool	Sow (spring): March 21 · Sow (fall): August 21
Onions	cool	Transplant (spring): March 14
Potatoes	cool	Plant seed potatoes: March 28
Radishes	cool	Sow (spring): March 14 · Sow (fall): September 18

Dates are computed from Puyallup's average frost dates using standard cool-/warm-season timing. They're a starting point — a cold spring, a warm microclimate, or a fast-maturing variety can shift them by a week or two.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in Washington

Tacoma, WA Lakewood, WA Federal Way, WA Auburn, WA Kent, WA Renton, WA Lacey, WA Olympia, WA

Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — Mcmillin Rsvr, WA, 3.3 mi (confidence: high). Monthly weather normals: Mcmillin Rsvr, WA, 3.3 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.