Frost Dates for Mayo A, 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. May 24
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 25
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 May 29
First Fall Frost August 19

Hard Freeze (−2°C)

Last Spring Hard Freeze May 14
First Fall Hard Freeze September 10
63.62°N, -135.87°W © OpenStreetMap

Growing Season

93 Days May 24 to August 25

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 1a

Avg. annual minimum: −60 to −55°F (−51 to −48°C)

Learn more

Köppen Climate iThe 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

-30° -15° 0° 15°
-24°
High: -18°C
Avg: -24°C
Low: -29°C
Jan
-17°
High: -11°C
Avg: -17°C
Low: -23°C
Feb
-10°
High: -3°C
Avg: -10°C
Low: -17°C
Mar
1°
High: 7°C
Avg: 1°C
Low: -5°C
Apr
9°
High: 15°C
Avg: 9°C
Low: 2°C
May
15°
High: 22°C
Avg: 15°C
Low: 8°C
Jun
16°
High: 23°C
Avg: 16°C
Low: 9°C
Jul
13°
High: 20°C
Avg: 13°C
Low: 7°C
Aug
7°
High: 12°C
Avg: 7°C
Low: 1°C
Sep
-2°
High: 2°C
Avg: -2°C
Low: -6°C
Oct
-15°
High: -11°C
Avg: -15°C
Low: -19°C
Nov
-20°
High: -14°C
Avg: -20°C
Low: -25°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm 60 mm
3 mm
2.5 mm
Jan
0 mm
0.0 mm
Feb
0 mm
0.0 mm
Mar
0 mm
0.0 mm
Apr
3 mm
2.5 mm
May
38 mm
38.1 mm
Jun
64 mm
63.5 mm
Jul
48 mm
48.3 mm
Aug
46 mm
45.7 mm
Sep
5 mm
5.1 mm
Oct
3 mm
2.5 mm
Nov
0 mm
0.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec5h8h11h14.5h18h20h19h16h12.5h9.5h6h4h
Jan: 9:27 AM – 2:33 PM · 5h 06m
Feb: 7:54 AM – 4:06 PM · 8h 13m
Mar: 6:23 AM – 5:37 PM · 11h 14m
Apr: 4:42 AM – 7:18 PM · 14h 36m
May: 3:07 AM – 8:53 PM · 17h 46m
Jun: 1:59 AM – 10:01 PM · 20h 03m
Jul: 2:29 AM – 9:31 PM · 19h 01m
Aug: 4:01 AM – 7:59 PM · 15h 57m
Sep: 5:42 AM – 6:18 PM · 12h 36m
Oct: 7:20 AM – 4:40 PM · 9h 21m
Nov: 8:58 AM – 3:02 PM · 6h 05m
Dec: 10:02 AM – 1:58 PM · 3h 57m
Daylight Longest: 20h 08m · Shortest: 3h 52m

Nearby Stations

Carmacks Cs, YTJune 11 - August 9

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