Frost Dates for Auburn, WA

Based on data from Kent weather station, 8 miles away

Elevation: 82 ft

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. March 20
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. November 10

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost March 29
First Fall Frost November 3

Hard Freeze (28°F)

Last Spring Hard Freeze February 25
First Fall Hard Freeze November 24
47.31°N, 122.23°W © OpenStreetMap

Growing Season

235 Days March 20 to November 10

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 8b

Avg. annual minimum: 15 to 20°F

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (32°F)
Temperature table
Average monthly temperatures (°F)
Month Avg High Avg Temp Avg Low
January48°42°36°
February51°44°36°
March56°47°39°
April61°52°43°
May68°58°49°
June72°63°53°
July78°68°57°
August78°68°57°
September73°63°52°
October61°54°46°
November53°46°39°
December47°41°35°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January6.1
February4.6
March4.9
April4.2
May3.6
June3.0
July2.9
August3.5
September4.2
October5.2
November5.4
December5.8

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 15h 45m · Shortest: 8h 15m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:59 AM4:38 PM8h 40m
February7:23 AM5:24 PM10h 01m
March7:31 AM7:06 PM11h 35m
April6:28 AM7:51 PM13h 23m
May5:38 AM8:32 PM14h 54m
June5:17 AM9:01 PM15h 44m
July5:33 AM8:56 PM15h 23m
August6:11 AM8:15 PM14h 04m
September6:54 AM7:13 PM12h 19m
October7:37 AM6:12 PM10h 35m
November7:23 AM4:25 PM9h 02m
December7:57 AM4:13 PM8h 16m

Nearby Stations

Seattle Tacoma Intl AP, WA March 2 - November 23 Renton Muni AP, WA March 13 - November 16 Seattle Boeing Fld, WA March 13 - November 17 Landsburg, WA April 20 - October 25 Tacoma #1, WA March 8 - November 14 Seattle Sand Pt Wsfo, WA March 8 - November 23

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview