Frost Dates for Edmonton Stony Plain, AB

Elevation: 766 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 12
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 22

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 17
First Fall Frost September 16

Hard Freeze (−2°C)

Last Spring Hard Freeze April 25
First Fall Hard Freeze October 3
53.55°N, 114.12°W © OpenStreetMap

Growing Season

133 Days May 12 to September 22

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 4a

Avg. annual minimum: −34 to −32°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-5°-10°-14°
February-3°-7°-12°
March2°-3°-8°
April10°5°-1°
May17°11°5°
June20°15°9°
July23°17°12°
August22°16°11°
September17°12°6°
October10°5°0°
November0°-3°-7°
December-5°-9°-13°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January0
February0
March8
April20
May46
June86
July91
August56
September33
October18
November5
December0

Sunrise / Sunset

Daylight Mountain Time (MT) Longest: 16h 48m · Shortest: 7h 12m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Time (MT))
Month Sunrise Sunset Daylight
January8:53 AM4:39 PM7h 46m
February8:06 AM5:36 PM9h 31m
March8:01 AM7:31 PM11h 29m
April6:45 AM8:29 PM13h 44m
May5:43 AM9:22 PM15h 39m
June5:14 AM9:59 PM16h 46m
July5:33 AM9:51 PM16h 18m
August6:23 AM8:58 PM14h 35m
September7:19 AM7:43 PM12h 24m
October8:15 AM6:29 PM10h 14m
November8:14 AM4:29 PM8h 16m
December8:55 AM4:09 PM7h 14m

Nearby Stations

Edmonton Stony Plain Cs, AB May 8 - September 23 Edmonton Woodbend, AB May 30 - September 12 Calmar, ABMay 20 - September 15 University Of Alberta Metaboli, AB May 15 - September 20 Edmonton Municipal Cr10, AB May 5 - September 27 Edmonton Int'L A, AB May 25 - September 11

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