Frost Dates for Whitehorse Riverdale, YT

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. June 5
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. August 31
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 9
First Fall Frost August 21

Hard Freeze (−2°C)

Last Spring Hard Freeze May 21
First Fall Hard Freeze September 16
60.72°N, -135.03°W © OpenStreetMap

Growing Season

87 Days June 5 to August 31

USDA Hardiness Zone iHardiness 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: −45 to −40°F (−43 to −40°C)

Learn more

Köppen Climate iThe 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

-25° -10° 5° 20°
-17°
High: -12°C
Avg: -17°C
Low: -21°C
Jan
-12°
High: -6°C
Avg: -12°C
Low: -17°C
Feb
-7°
High: 0°C
Avg: -7°C
Low: -13°C
Mar
2°
High: 9°C
Avg: 2°C
Low: -5°C
Apr
8°
High: 16°C
Avg: 8°C
Low: 1°C
May
13°
High: 21°C
Avg: 13°C
Low: 6°C
Jun
15°
High: 22°C
Avg: 15°C
Low: 9°C
Jul
13°
High: 20°C
Avg: 13°C
Low: 7°C
Aug
8°
High: 13°C
Avg: 8°C
Low: 2°C
Sep
1°
High: 5°C
Avg: 1°C
Low: -3°C
Oct
-8°
High: -5°C
Avg: -8°C
Low: -12°C
Nov
-15°
High: -10°C
Avg: -15°C
Low: -19°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 10 mm 20 mm 30 mm 40 mm
8 mm
7.6 mm
Jan
3 mm
2.5 mm
Feb
0 mm
0.0 mm
Mar
0 mm
0.0 mm
Apr
0 mm
0.0 mm
May
28 mm
27.9 mm
Jun
36 mm
35.6 mm
Jul
33 mm
33.0 mm
Aug
28 mm
27.9 mm
Sep
10 mm
10.2 mm
Oct
18 mm
17.8 mm
Nov
5 mm
5.1 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec6h8.5h11.5h14.5h17h18.5h18h15.5h12.5h9.5h7h5.5h
Jan: 8:56 AM – 3:04 PM · 6h 08m
Feb: 7:40 AM – 4:20 PM · 8h 41m
Mar: 6:20 AM – 5:40 PM · 11h 20m
Apr: 4:51 AM – 7:09 PM · 14h 18m
May: 3:31 AM – 8:29 PM · 16h 59m
Jun: 2:39 AM – 9:21 PM · 18h 42m
Jul: 3:01 AM – 8:59 PM · 17h 57m
Aug: 4:16 AM – 7:44 PM · 15h 28m
Sep: 5:44 AM – 6:16 PM · 12h 32m
Oct: 7:10 AM – 4:50 PM · 9h 40m
Nov: 8:33 AM – 3:27 PM · 6h 54m
Dec: 9:21 AM – 2:39 PM · 5h 18m
Daylight Longest: 18h 45m · Shortest: 5h 15m

Nearby Stations

Whitehorse A, YT June 3 - August 28 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

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview