Frost Dates for Bridgetown, 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. September 15
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. June 4
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 October 2
First Fall Frost May 27

Hard Freeze (−2°C)

Last Spring Hard Freeze July 26
First Fall Hard Freeze June 9
-33.95°N, 116.13°W © OpenStreetMap

Growing Season

262 Days September 15 to June 4

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 9b

Avg. annual minimum: 25 to 30°F (−4 to −1°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

0° 10° 20° 30°
21°
High: 30°C
Avg: 21°C
Low: 13°C
Jan
22°
High: 30°C
Avg: 22°C
Low: 13°C
Feb
20°
High: 27°C
Avg: 20°C
Low: 12°C
Mar
16°
High: 23°C
Avg: 16°C
Low: 9°C
Apr
13°
High: 19°C
Avg: 13°C
Low: 7°C
May
11°
High: 17°C
Avg: 11°C
Low: 5°C
Jun
10°
High: 16°C
Avg: 10°C
Low: 5°C
Jul
11°
High: 16°C
Avg: 11°C
Low: 5°C
Aug
12°
High: 18°C
Avg: 12°C
Low: 6°C
Sep
14°
High: 21°C
Avg: 14°C
Low: 7°C
Oct
17°
High: 24°C
Avg: 17°C
Low: 9°C
Nov
19°
High: 28°C
Avg: 19°C
Low: 11°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 50 mm 100 mm 150 mm
10 mm
10.2 mm
Jan
8 mm
7.6 mm
Feb
18 mm
17.8 mm
Mar
51 mm
50.8 mm
Apr
107 mm
106.7 mm
May
114 mm
114.3 mm
Jun
127 mm
127.0 mm
Jul
119 mm
119.4 mm
Aug
86 mm
86.4 mm
Sep
43 mm
43.2 mm
Oct
20 mm
20.3 mm
Nov
15 mm
15.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec14h13h12.5h11h10h10h10h10.5h12h13h14h14.5h
Jan: 4:59 AM – 7:01 PM · 14h 02m
Feb: 5:23 AM – 6:37 PM · 13h 13m
Mar: 5:52 AM – 6:08 PM · 12h 15m
Apr: 6:26 AM – 5:34 PM · 11h 09m
May: 6:53 AM – 5:07 PM · 10h 14m
Jun: 7:07 AM – 4:53 PM · 9h 45m
Jul: 7:02 AM – 4:58 PM · 9h 57m
Aug: 6:38 AM – 5:22 PM · 10h 44m
Sep: 6:06 AM – 5:54 PM · 11h 48m
Oct: 5:34 AM – 6:26 PM · 12h 52m
Nov: 5:06 AM – 6:54 PM · 13h 48m
Dec: 4:52 AM – 7:08 PM · 14h 15m
Daylight Longest: 14h 16m · Shortest: 9h 44m

Nearby Stations

Bridgetown Comparison, WA August 17 - June 5 Manjimup, WA Jarrahwood, WA September 25 - May 16 Donnybrook, WAJuly 30 - June 10 Pemberton, WA Shannon, WA

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