Frost Dates for Hay River A, NT

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 1
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. September 17
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 7
First Fall Frost September 13

Hard Freeze (−2°C)

Last Spring Hard Freeze May 20
First Fall Hard Freeze September 30
60.83°N, -115.78°W © OpenStreetMap

Growing Season

108 Days June 1 to September 17

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.

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°
-22°
High: -18°C
Avg: -22°C
Low: -26°C
Jan
-19°
High: -14°C
Avg: -19°C
Low: -24°C
Feb
-14°
High: -8°C
Avg: -14°C
Low: -20°C
Mar
-3°
High: 3°C
Avg: -3°C
Low: -8°C
Apr
6°
High: 11°C
Avg: 6°C
Low: 0°C
May
13°
High: 18°C
Avg: 13°C
Low: 7°C
Jun
17°
High: 22°C
Avg: 17°C
Low: 11°C
Jul
15°
High: 20°C
Avg: 15°C
Low: 10°C
Aug
9°
High: 14°C
Avg: 9°C
Low: 5°C
Sep
1°
High: 4°C
Avg: 1°C
Low: -3°C
Oct
-11°
High: -7°C
Avg: -11°C
Low: -14°C
Nov
-19°
High: -14°C
Avg: -19°C
Low: -23°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
0 mm
0.0 mm
Jan
0 mm
0.0 mm
Feb
0 mm
0.0 mm
Mar
5 mm
5.1 mm
Apr
5 mm
5.1 mm
May
13 mm
12.7 mm
Jun
41 mm
40.6 mm
Jul
58 mm
58.4 mm
Aug
41 mm
40.6 mm
Sep
28 mm
27.9 mm
Oct
8 mm
7.6 mm
Nov
3 mm
2.5 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec6h8.5h11.5h14.5h17h18.5h18h15.5h12.5h9.5h7h5.5h
Jan: 8:57 AM – 3:03 PM · 6h 06m
Feb: 7:40 AM – 4:20 PM · 8h 40m
Mar: 6:20 AM – 5:40 PM · 11h 20m
Apr: 4:51 AM – 7:09 PM · 14h 18m
May: 3:30 AM – 8:30 PM · 17h 01m
Jun: 2:38 AM – 9:22 PM · 18h 44m
Jul: 3:00 AM – 8:60 PM · 17h 60m
Aug: 4:16 AM – 7:44 PM · 15h 29m
Sep: 5:44 AM – 6:16 PM · 12h 32m
Oct: 7:11 AM – 4:49 PM · 9h 39m
Nov: 8:34 AM – 3:26 PM · 6h 52m
Dec: 9:22 AM – 2:38 PM · 5h 15m
Daylight Longest: 18h 48m · Shortest: 5h 12m

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