Frost Dates for Fort St James, BC

Elevation: 691 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 24
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. September 13

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 29
First Fall Frost September 4

Hard Freeze (−2°C)

Last Spring Hard Freeze May 7
First Fall Hard Freeze September 25
54.45°N, 124.28°W © OpenStreetMap

Growing Season

112 Days May 24 to September 13

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 3b

Avg. annual minimum: −37 to −34°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

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-6°-10°-14°
February-1°-7°-12°
March4°-2°-8°
April10°4°-2°
May16°9°3°
June19°13°7°
July22°15°9°
August21°15°8°
September16°10°4°
October9°4°-1°
November1°-2°-6°
December-4°-8°-12°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January51
February20
March15
April10
May28
June48
July53
August53
September38
October53
November43
December51

Sunrise / Sunset

Daylight Longest: 16h 59m · Shortest: 7h 01m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January8:12 AM3:48 PM7h 36m
February7:17 AM4:43 PM9h 26m
March6:16 AM5:44 PM11h 28m
April5:06 AM6:54 PM13h 47m
May4:06 AM7:54 PM15h 47m
June3:32 AM8:28 PM16h 57m
July3:46 AM8:14 PM16h 28m
August4:40 AM7:20 PM14h 41m
September5:48 AM6:12 PM12h 25m
October6:55 AM5:05 PM10h 10m
November7:56 AM4:04 PM8h 07m
December8:29 AM3:31 PM7h 03m

Nearby Stations

Vanderhoof, BC May 21 - September 12 Fraser Lake North Shore, BC May 25 - September 13 Babine Lake Pinkut Creek, BC May 19 - September 22 Burns Lake Decker Lake, BC June 21 - July 26 Mackenzie A, BC May 27 - September 4 Ootsa L Skins L Spillway, BC June 5 - September 8

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