Frost Dates for Brookton, WA

Elevation: 250 m

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. September 9
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. June 16

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 September 24
First Fall Frost June 9
32.37°S, 117.01°E © OpenStreetMap

Growing Season

280 Days September 9 to June 16

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 9b

Avg. annual minimum: −4 to −1°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csa Hot-Summer Mediterranean

Hot, dry summers and mild, wet winters. Classic Mediterranean climate ideal for grapes, olives, tomatoes, and herbs. Summer irrigation is usually necessary.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January33°24°16°
February32°24°16°
March30°22°15°
April25°18°12°
May21°14°8°
June17°12°6°
July16°10°5°
August17°11°5°
September19°12°6°
October24°16°8°
November28°20°11°
December31°23°14°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January15
February8
March13
April15
May36
June64
July79
August64
September30
October5
November5
December3

Sunrise / Sunset

Daylight Longest: 14h 08m · Shortest: 9h 52m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January5:03 AM6:57 PM13h 54m
February5:26 AM6:34 PM13h 09m
March5:53 AM6:07 PM12h 14m
April6:24 AM5:36 PM11h 12m
May6:50 AM5:10 PM10h 20m
June7:03 AM4:57 PM9h 53m
July6:58 AM5:02 PM10h 04m
August6:36 AM5:24 PM10h 48m
September6:06 AM5:54 PM11h 49m
October5:35 AM6:25 PM12h 49m
November5:09 AM6:51 PM13h 42m
December4:57 AM7:03 PM14h 07m

Nearby Stations

Pingelly, WAAugust 16 - June 19 Beverley, WASeptember 4 - June 11 Wandering, WAOctober 2 - May 28 York, WASeptember 17 - June 8 Narrogin, WAAugust 15 - June 10 Corrigin, WASeptember 3 - June 11

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