Frost Dates for Harbour Breton, NL

Elevation: 30 m

Frost Dates

Last Spring Frost (50%) A 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%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. October 21

30% Probability

Only 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

Hardiness 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: −18 to −15°C

Learn more

Köppen Climate

The 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

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January0°-4°-7°
February-1°-4°-7°
March2°-2°-5°
April5°2°-1°
May10°7°3°
June14°10°7°
July17°14°11°
August19°16°13°
September16°13°10°
October11°8°5°
November7°4°1°
December3°0°-4°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January122
February109
March94
April102
May112
June119
July117
August109
September127
October157
November147
December130

Sunrise / Sunset

Daylight Longest: 15h 46m · Shortest: 8h 14m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:40 AM4:20 PM8h 39m
February6:60 AM5:00 PM10h 01m
March6:12 AM5:48 PM11h 35m
April5:18 AM6:42 PM13h 23m
May4:33 AM7:27 PM14h 54m
June4:08 AM7:52 PM15h 44m
July4:18 AM7:42 PM15h 24m
August4:58 AM7:02 PM14h 04m
September5:50 AM6:10 PM12h 19m
October6:42 AM5:18 PM10h 35m
November7:29 AM4:31 PM9h 02m
December7:52 AM4:08 PM8h 16m

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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