Frost Dates for Brush Prairie, WA

Based on data from Battle Ground weather station, 3 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. April 26
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. October 16
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 May 1
First Fall Frost October 8

Hard Freeze (28°F)

Last Spring Hard Freeze March 29
First Fall Hard Freeze November 5
45.73°N, -122.55°W © OpenStreetMap

Growing Season

173 Days April 26 to October 16

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°
39°
High: 46°F
Avg: 39°F
Low: 32°F
Jan
41°
High: 50°F
Avg: 41°F
Low: 32°F
Feb
45°
High: 55°F
Avg: 45°F
Low: 35°F
Mar
49°
High: 60°F
Avg: 49°F
Low: 38°F
Apr
55°
High: 67°F
Avg: 55°F
Low: 43°F
May
59°
High: 71°F
Avg: 59°F
Low: 47°F
Jun
65°
High: 79°F
Avg: 65°F
Low: 51°F
Jul
65°
High: 80°F
Avg: 65°F
Low: 50°F
Aug
60°
High: 75°F
Avg: 60°F
Low: 46°F
Sep
51°
High: 63°F
Avg: 51°F
Low: 40°F
Oct
44°
High: 52°F
Avg: 44°F
Low: 35°F
Nov
39°
High: 45°F
Avg: 39°F
Low: 32°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 3" 6" 8.2"
7.1"
7.09"
Jan
5.6"
5.62"
Feb
6.0"
6.03"
Mar
5.5"
5.49"
Apr
5.1"
5.07"
May
3.3"
3.29"
Jun
2.1"
2.09"
Jul
3.0"
2.95"
Aug
4.1"
4.13"
Sep
5.4"
5.37"
Oct
7.1"
7.06"
Nov
8.2"
8.17"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h11.5h13.5h14.5h15.5h15h14h12.5h10.5h9h8.5h
Jan: 7:34 AM – 4:26 PM · 8h 51m
Feb: 6:56 AM – 5:04 PM · 10h 08m
Mar: 6:12 AM – 5:48 PM · 11h 37m
Apr: 5:21 AM – 6:39 PM · 13h 18m
May: 4:38 AM – 7:22 PM · 14h 44m
Jun: 4:15 AM – 7:45 PM · 15h 30m
Jul: 4:24 AM – 7:36 PM · 15h 11m
Aug: 5:02 AM – 6:58 PM · 13h 57m
Sep: 5:51 AM – 6:09 PM · 12h 18m
Oct: 6:40 AM – 5:20 PM · 10h 40m
Nov: 7:24 AM – 4:36 PM · 9h 13m
Dec: 7:45 AM – 4:15 PM · 8h 30m
Daylight Longest: 15h 32m · Shortest: 8h 28m

Nearby Stations

Vancouver 4 Nne, WA April 26 - October 18 Vancouver Pearson AP, WA March 29 - November 9 Portland Intl AP, OR March 13 - November 19 Portland Wfo, OR March 13 - November 22 Scappoose Ind AP, OR April 10 - November 2 Portland Troutdale AP, OR March 16 - November 20

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