Frost Dates for Whitehorse, YT

Based on data from Whitehorse A weather station, 0 miles away

Elevation: 707 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 3
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. August 28

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 8
First Fall Frost August 21

Hard Freeze (−2°C)

Last Spring Hard Freeze May 19
First Fall Hard Freeze September 18
60.72°N, 135.05°W © OpenStreetMap

Growing Season

86 Days June 3 to August 28

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 2b

Avg. annual minimum: −43 to −40°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dsc Subarctic (Dry Summer)

Cool, dry summers and cold winters. A rare climate found at high elevations. Very short growing season for cold-tolerant crops only.

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-12°-16°-20°
February-7°-12°-16°
March-2°-7°-13°
April7°2°-4°
May14°8°1°
June19°13°6°
July21°14°8°
August19°13°7°
September12°7°3°
October4°1°-3°
November-6°-9°-12°
December-9°-13°-17°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January8
February0
March0
April0
May0
June23
July25
August43
September18
October3
November10
December3

Sunrise / Sunset

Daylight Mountain Standard Time (MST) Longest: 18h 45m · Shortest: 5h 15m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Standard Time (MST))
Month Sunrise Sunset Daylight
January11:05 AM5:14 PM6h 08m
February9:54 AM6:35 PM8h 41m
March8:30 AM7:50 PM11h 20m
April6:52 AM9:09 PM14h 18m
May5:27 AM10:26 PM16h 59m
June4:40 AM11:21 PM18h 42m
July5:07 AM11:05 PM17h 57m
August6:21 AM9:48 PM15h 28m
September7:39 AM8:11 PM12h 32m
October8:56 AM6:35 PM9h 40m
November10:18 AM5:12 PM6h 54m
December11:17 AM4:35 PM5h 18m

Nearby Stations

Whitehorse Riverdale, YT June 5 - August 31 Mayo Road, YTJune 16 - August 11 Takhini River Ranch, YT June 17 - August 3 Blanchard River, YT June 23 - July 28 Skagway AP, AK April 21 - October 17 Skagway, AKMay 6 - October 1

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