Frost Dates for Cougar 6 E, WA

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. April 1
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 18
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 April 15
First Fall Frost November 10

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze February 22
First Fall Hard Freeze December 7
46.06°N, -122.20°W © OpenStreetMap

Growing Season

231 Days April 1 to November 18

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 9a

Learn more

Temperature

30° 50° 70° 90°
40°
High: 45°
Avg: 40°
Low: 34°
Jan
42°
High: 49°
Avg: 42°
Low: 35°
Feb
45°
High: 54°
Avg: 45°
Low: 37°
Mar
50°
High: 59°
Avg: 50°
Low: 40°
Apr
57°
High: 68°
Avg: 57°
Low: 46°
May
61°
High: 73°
Avg: 61°
Low: 50°
Jun
68°
High: 81°
Avg: 68°
Low: 54°
Jul
68°
High: 82°
Avg: 68°
Low: 54°
Aug
63°
High: 75°
Avg: 63°
Low: 51°
Sep
54°
High: 63°
Avg: 54°
Low: 45°
Oct
45°
High: 51°
Avg: 45°
Low: 39°
Nov
39°
High: 44°
Avg: 39°
Low: 34°
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 5" 10" 15" 17.8"
15.9"
15.92"
Jan
12.7"
12.72"
Feb
12.4"
12.41"
Mar
9.6"
9.60"
Apr
7.3"
7.32"
May
4.9"
4.90"
Jun
3.2"
3.22"
Jul
5.0"
4.97"
Aug
6.9"
6.89"
Sep
11.3"
11.29"
Oct
17.8"
17.83"
Nov
17.8"
17.76"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h15h16h15h14h12h11h9h8h
Jan: 7:35 AM – 4:25 PM · 8h 49m
Feb: 6:57 AM – 5:03 PM · 10h 06m
Mar: 6:12 AM – 5:48 PM · 11h 37m
Apr: 5:20 AM – 6:40 PM · 13h 19m
May: 4:37 AM – 7:23 PM · 14h 45m
Jun: 4:14 AM – 7:46 PM · 15h 33m
Jul: 4:23 AM – 7:37 PM · 15h 13m
Aug: 5:01 AM – 6:59 PM · 13h 58m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 39m
Nov: 7:24 AM – 4:36 PM · 9h 11m
Dec: 7:46 AM – 4:14 PM · 8h 27m
Daylight Longest: 15h 34m · Shortest: 8h 26m

Nearby Stations

Carson Fish Hatchery, WA May 2 - October 9 Battle Ground, WA April 26 - October 16 Skamania Fish Hatchery, WA April 29 - October 22 Cascade Locks, OR March 24 - November 20 Glenoma, WAApril 24 - October 15 Bonneville Dam, OR March 14 - November 27

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