Frost Dates for Hyden, WA

Elevation: 299 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 6
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 5

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 18
First Fall Frost May 21

Hard Freeze (−2°C)

Last Spring Hard Freeze July 27
First Fall Hard Freeze June 16
32.44°S, 118.90°E © OpenStreetMap

Growing Season

272 Days September 6 to June 5

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.
BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January34°25°16°
February33°25°16°
March30°22°14°
April26°19°11°
May21°15°8°
June18°12°5°
July17°11°5°
August18°11°5°
September21°13°6°
October26°17°9°
November29°21°12°
December32°23°14°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January23
February13
March20
April13
May30
June33
July53
August48
September23
October15
November18
December8

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 55m
February5:25 AM6:35 PM13h 09m
March5:53 AM6:07 PM12h 14m
April6:24 AM5:36 PM11h 12m
May6:50 AM5:10 PM10h 20m
June7:04 AM4:56 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
December4:56 AM7:04 PM14h 07m

Nearby Stations

Narembeen, WAAugust 23 - June 10 Newdegate Research Station, WA September 30 - June 4 Lake Grace, WAAugust 24 - June 19 Lake Grace Comparison, WA Corrigin, WASeptember 3 - June 11 Merredin, WAAugust 28 - June 8

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