Frost Dates for Fort William, NL

Based on data from St John'S A weather station, 4 miles away

Elevation: 36 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 26
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 18

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 June 1
First Fall Frost October 14

Hard Freeze (−2°C)

Last Spring Hard Freeze May 7
First Fall Hard Freeze November 8
47.57°N, 52.70°W © OpenStreetMap

Growing Season

145 Days May 26 to October 18

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
January-1°-4°-8°
February-1°-5°-8°
March1°-2°-6°
April5°2°-2°
May11°6°2°
June16°11°6°
July21°16°11°
August21°16°12°
September17°13°8°
October11°8°4°
November7°3°0°
December2°-1°-4°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January152
February117
March137
April122
May104
June86
July89
August99
September127
October168
November157
December183

Sunrise / Sunset

Daylight Newfoundland Time (NT) Longest: 15h 47m · Shortest: 8h 13m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Newfoundland Time (NT))
Month Sunrise Sunset Daylight
January7:51 AM4:29 PM8h 38m
February7:16 AM5:16 PM10h 00m
March7:23 AM6:58 PM11h 35m
April6:19 AM7:43 PM13h 24m
May5:30 AM8:25 PM14h 55m
June5:08 AM8:54 PM15h 45m
July5:24 AM8:49 PM15h 25m
August6:03 AM8:08 PM14h 05m
September6:46 AM7:05 PM12h 19m
October7:29 AM6:03 PM10h 35m
November7:16 AM4:17 PM9h 01m
December7:50 AM4:04 PM8h 14m

Nearby Stations

Holyrood Gen Stn, NL June 5 - October 10 Butlerville, NL June 13 - September 21 Whitbourne, NL June 9 - September 23 Goobies, NLJune 12 - September 2 Argentia (Aut), NL May 4 - November 8 Cape Race (Aut), NL May 28 - October 17

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