Frost Dates for Suskwa Valley, BC

Elevation: 534 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. June 1
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. September 7

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 June 7
First Fall Frost August 26

Hard Freeze (−2°C)

Last Spring Hard Freeze May 13
First Fall Hard Freeze September 30
55.28°N, 127.17°W © OpenStreetMap

Growing Season

98 Days June 1 to September 7

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 5a

Avg. annual minimum: −29 to −26°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfc Subarctic

Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January-4°-7°-9°
February0°-4°-8°
March5°0°-5°
April10°4°-2°
May16°9°2°
June19°12°6°
July21°14°8°
August20°14°7°
September15°10°4°
October8°4°0°
November1°-2°-4°
December-3°-6°-8°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January71
February38
March46
April48
May64
June79
July79
August81
September81
October89
November84
December71

Sunrise / Sunset

Daylight Longest: 17h 10m · Shortest: 6h 50m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January8:17 AM3:43 PM7h 27m
February7:20 AM4:40 PM9h 21m
March6:16 AM5:44 PM11h 27m
April5:05 AM6:55 PM13h 51m
May4:02 AM7:58 PM15h 55m
June3:26 AM8:34 PM17h 08m
July3:41 AM8:19 PM16h 37m
August4:37 AM7:23 PM14h 46m
September5:47 AM6:13 PM12h 26m
October6:57 AM5:03 PM10h 07m
November8:00 AM3:60 PM7h 59m
December8:34 AM3:26 PM6h 52m

Nearby Stations

Smithers, BCMay 29 - September 12 Smithers A, BC May 27 - September 13 Topley Landing, BC May 24 - September 19 Houston, BCMay 31 - September 8 Terrace Pcc, BC April 26 - October 17 Terrace A, BC April 27 - October 18

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