Frost Dates for Lake Marcel-Stillwater, WA

Based on data from Tolt S Fk Rsvr weather station, 10 miles away

Elevation: 299 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. April 13
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 April 23
First Fall Frost November 2

Hard Freeze (28°F)

Last Spring Hard Freeze March 14
First Fall Hard Freeze November 28
47.69°N, 121.92°W © OpenStreetMap

Growing Season

211 Days April 13 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 8a

Avg. annual minimum: 10 to 15°F

Learn more

Köppen Climate

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

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

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
January41°37°33°
February43°38°33°
March46°40°34°
April52°45°37°
May61°52°44°
June65°57°49°
July72°63°54°
August72°63°54°
September66°58°50°
October55°49°43°
November45°41°36°
December40°36°32°

Precipitation

Precipitation table
Average monthly precipitation (inches)
MonthPrecipitation
January12.4
February10.1
March10.2
April9.1
May8.2
June7.0
July4.0
August4.0
September7.4
October11.3
November12.8
December11.9

Sunrise / Sunset

Daylight Pacific Time (PT) Longest: 15h 48m · Shortest: 8h 12m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Pacific Time (PT))
Month Sunrise Sunset Daylight
January7:57 AM4:35 PM8h 37m
February7:22 AM5:21 PM9h 60m
March7:29 AM7:04 PM11h 35m
April6:25 AM7:49 PM13h 24m
May5:35 AM8:31 PM14h 56m
June5:14 AM9:00 PM15h 46m
July5:30 AM8:55 PM15h 25m
August6:08 AM8:14 PM14h 05m
September6:52 AM7:11 PM12h 20m
October7:35 AM6:09 PM10h 34m
November7:22 AM4:22 PM9h 01m
December7:56 AM4:09 PM8h 14m

Nearby Stations

Baring, WAApril 14 - October 29 Startup 1 E, WA April 15 - October 25 Snoqualmie Falls, WA March 30 - November 7 Monroe, WAApril 17 - October 23 Cedar Lake, WA April 23 - November 1 Landsburg, WA April 20 - October 25

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