Frost Dates for Auburn, WA

Based on data from Kent weather station, 8 miles away

Frost Dates

Last Spring Frost (50%) iA 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%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. November 10
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 iHardiness 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 (−9 to −7°C)

Learn more

Köppen Climate iThe 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

30° 50° 70°
42°
High: 48°F
Avg: 42°F
Low: 36°F
Jan
44°
High: 51°F
Avg: 44°F
Low: 36°F
Feb
47°
High: 56°F
Avg: 47°F
Low: 39°F
Mar
52°
High: 61°F
Avg: 52°F
Low: 43°F
Apr
58°
High: 68°F
Avg: 58°F
Low: 49°F
May
63°
High: 72°F
Avg: 63°F
Low: 53°F
Jun
68°
High: 78°F
Avg: 68°F
Low: 57°F
Jul
68°
High: 78°F
Avg: 68°F
Low: 57°F
Aug
63°
High: 73°F
Avg: 63°F
Low: 52°F
Sep
54°
High: 61°F
Avg: 54°F
Low: 46°F
Oct
46°
High: 53°F
Avg: 46°F
Low: 39°F
Nov
41°
High: 47°F
Avg: 41°F
Low: 35°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 6" 6.1"
6.1"
6.07"
Jan
4.6"
4.62"
Feb
4.9"
4.91"
Mar
4.2"
4.15"
Apr
3.6"
3.57"
May
3.0"
3.01"
Jun
2.9"
2.89"
Jul
3.5"
3.46"
Aug
4.2"
4.23"
Sep
5.2"
5.21"
Oct
5.4"
5.40"
Nov
5.8"
5.77"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 7:40 AM – 4:20 PM · 8h 40m
Feb: 6:60 AM – 5:00 PM · 10h 01m
Mar: 6:12 AM – 5:48 PM · 11h 35m
Apr: 5:18 AM – 6:42 PM · 13h 23m
May: 4:33 AM – 7:27 PM · 14h 54m
Jun: 4:08 AM – 7:52 PM · 15h 44m
Jul: 4:18 AM – 7:42 PM · 15h 23m
Aug: 4:58 AM – 7:02 PM · 14h 04m
Sep: 5:50 AM – 6:10 PM · 12h 19m
Oct: 6:42 AM – 5:18 PM · 10h 35m
Nov: 7:29 AM – 4:31 PM · 9h 02m
Dec: 7:52 AM – 4:08 PM · 8h 16m
Daylight Longest: 15h 45m · Shortest: 8h 15m

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