Frost Dates for Brevoort Island, NU

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 29
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. July 5

This location has a very short growing season. Frost can occur at almost any time of year.

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 30
First Fall Frost July 3

Hard Freeze (−2°C)

Last Spring Hard Freeze June 20
First Fall Hard Freeze August 27
63.33°N, -64.15°W © OpenStreetMap

Growing Season

6 Days June 29 to July 5

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 4a

Avg. annual minimum: −30 to −25°F (−34 to −32°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

ET Tundra

No true summer — the warmest month averages below 10°C (50°F). Growing is limited to hardy greens, root crops, and cold-frames during the brief warm period. Permafrost restricts root depth.

Köppen climate map

Temperature

-25° -15° -5° 5°
-21°
High: -19°C
Avg: -21°C
Low: -23°C
Jan
-22°
High: -20°C
Avg: -22°C
Low: -25°C
Feb
-19°
High: -16°C
Avg: -19°C
Low: -22°C
Mar
-12°
High: -10°C
Avg: -12°C
Low: -15°C
Apr
-5°
High: -3°C
Avg: -5°C
Low: -7°C
May
1°
High: 3°C
Avg: 1°C
Low: -1°C
Jun
5°
High: 8°C
Avg: 5°C
Low: 3°C
Jul
5°
High: 8°C
Avg: 5°C
Low: 3°C
Aug
1°
High: 2°C
Avg: 1°C
Low: -1°C
Sep
-4°
High: -3°C
Avg: -4°C
Low: -6°C
Oct
-9°
High: -7°C
Avg: -9°C
Low: -11°C
Nov
-15°
High: -13°C
Avg: -15°C
Low: -18°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
15 mm
15.2 mm
Jan
15 mm
15.2 mm
Feb
13 mm
12.7 mm
Mar
23 mm
22.9 mm
Apr
30 mm
30.5 mm
May
10 mm
10.2 mm
Jun
18 mm
17.8 mm
Jul
10 mm
10.2 mm
Aug
38 mm
38.1 mm
Sep
58 mm
58.4 mm
Oct
53 mm
53.3 mm
Nov
23 mm
22.9 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec5h8.5h11h14.5h17.5h20h19h16h12.5h9.5h6h4h
Jan: 9:23 AM – 2:37 PM · 5h 13m
Feb: 7:52 AM – 4:08 PM · 8h 16m
Mar: 6:23 AM – 5:37 PM · 11h 15m
Apr: 4:43 AM – 7:17 PM · 14h 34m
May: 3:09 AM – 8:51 PM · 17h 41m
Jun: 2:04 AM – 9:56 PM · 19h 53m
Jul: 2:33 AM – 9:27 PM · 18h 54m
Aug: 4:03 AM – 7:57 PM · 15h 54m
Sep: 5:42 AM – 6:18 PM · 12h 35m
Oct: 7:19 AM – 4:41 PM · 9h 23m
Nov: 8:55 AM – 3:05 PM · 6h 10m
Dec: 9:57 AM – 2:03 PM · 4h 06m
Daylight Longest: 19h 58m · Shortest: 4h 02m

Nearby Stations

Cape Mercy, NUJune 29 - July 6

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