Frost Dates for Merredin, WA

Elevation: 315 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. August 28
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 8

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 10
First Fall Frost June 1
31.48°S, 118.28°E © OpenStreetMap

Growing Season

284 Days August 28 to June 8

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.
BSh Hot Semi-Arid (Steppe)

Hot with low but not negligible rainfall. Less extreme than true desert. Dryland farming techniques and drought-tolerant varieties work well. Mulching and water conservation are key.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January34°26°18°
February34°26°18°
March31°23°16°
April26°20°13°
May21°15°9°
June18°12°7°
July17°11°6°
August18°12°6°
September21°14°7°
October26°18°10°
November29°22°14°
December33°24°16°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January13
February13
March23
April13
May25
June30
July41
August43
September18
October8
November5
December8

Sunrise / Sunset

Daylight Longest: 14h 03m · Shortest: 9h 57m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January5:05 AM6:55 PM13h 50m
February5:27 AM6:33 PM13h 07m
March5:53 AM6:07 PM12h 14m
April6:23 AM5:37 PM11h 13m
May6:48 AM5:12 PM10h 24m
June7:01 AM4:59 PM9h 58m
July6:56 AM5:04 PM10h 08m
August6:35 AM5:25 PM10h 51m
September6:05 AM5:55 PM11h 49m
October5:36 AM6:24 PM12h 48m
November5:11 AM6:49 PM13h 38m
December4:59 AM7:01 PM14h 03m

Nearby Stations

Narembeen, WAAugust 23 - June 10 Bencubbin, WA Cunderdin Airfield, WA September 19 - June 11 Corrigin, WASeptember 3 - June 11 Southern Cross Airfield, WA September 12 - June 7 Hyden, WASeptember 6 - June 5

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