Frost Dates for Harbour Breton, NL

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 20
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. October 21
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 27
First Fall Frost October 14

Hard Freeze (−2°C)

Last Spring Hard Freeze April 22
First Fall Hard Freeze November 11
47.47°N, -55.83°W © OpenStreetMap

Growing Season

154 Days May 20 to October 21

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 7a

Avg. annual minimum: 0 to 5°F (−18 to −15°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

-10° 0° 10° 20°
-4°
High: 0°C
Avg: -4°C
Low: -7°C
Jan
-4°
High: -1°C
Avg: -4°C
Low: -7°C
Feb
-2°
High: 2°C
Avg: -2°C
Low: -5°C
Mar
2°
High: 5°C
Avg: 2°C
Low: -1°C
Apr
7°
High: 10°C
Avg: 7°C
Low: 3°C
May
10°
High: 14°C
Avg: 10°C
Low: 7°C
Jun
14°
High: 17°C
Avg: 14°C
Low: 11°C
Jul
16°
High: 19°C
Avg: 16°C
Low: 13°C
Aug
13°
High: 16°C
Avg: 13°C
Low: 10°C
Sep
8°
High: 11°C
Avg: 8°C
Low: 5°C
Oct
4°
High: 7°C
Avg: 4°C
Low: 1°C
Nov
0°
High: 3°C
Avg: 0°C
Low: -4°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm 150 mm
122 mm
121.9 mm
Jan
109 mm
109.2 mm
Feb
94 mm
94.0 mm
Mar
102 mm
101.6 mm
Apr
112 mm
111.8 mm
May
119 mm
119.4 mm
Jun
117 mm
116.8 mm
Jul
109 mm
109.2 mm
Aug
127 mm
127.0 mm
Sep
157 mm
157.5 mm
Oct
147 mm
147.3 mm
Nov
130 mm
129.5 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h15.5h15.5h14h12.5h10.5h9h8.5h
Jan: 7:40 AM – 4:20 PM · 8h 39m
Feb: 6:60 AM – 5:00 PM · 10h 01m
Mar: 6:12 AM – 5:48 PM · 11h 35m
Apr: 5:18 AM – 6:42 PM · 13h 23m
May: 4:33 AM – 7:27 PM · 14h 54m
Jun: 4:08 AM – 7:52 PM · 15h 44m
Jul: 4:18 AM – 7:42 PM · 15h 24m
Aug: 4:58 AM – 7:02 PM · 14h 04m
Sep: 5:50 AM – 6:10 PM · 12h 19m
Oct: 6:42 AM – 5:18 PM · 10h 35m
Nov: 7:29 AM – 4:31 PM · 9h 02m
Dec: 7:52 AM – 4:08 PM · 8h 16m
Daylight Longest: 15h 46m · Shortest: 8h 14m

Nearby Stations

Sagona Island, NL May 2 - November 4 Bay D'Espoir Gen Stn, NL June 14 - September 2 ST PIERRE, Saint Pierre and Miquelon April 21 - November 30 Swift Current, NL June 15 - September 21 Badger (Aut), NL June 15 - August 22 Buchans, NLMay 30 - October 6

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