Frost Dates for Sherwood, AB

Based on data from Cop Upper weather station, 6 miles away

Elevation: 1186 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 18
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 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 24
First Fall Frost September 16

Hard Freeze (−2°C)

Last Spring Hard Freeze May 5
First Fall Hard Freeze September 28
51.16°N, 114.15°W © OpenStreetMap

Growing Season

126 Days May 18 to September 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 4b

Avg. annual minimum: −32 to −29°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-1°-6°-11°
February0°-5°-10°
March4°-2°-7°
April10°4°-1°
May16°10°3°
June19°13°7°
July23°17°10°
August22°16°9°
September17°11°5°
October11°5°0°
November3°-1°-6°
December-1°-6°-10°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January0
February0
March5
April20
May69
June109
July56
August51
September33
October3
November8
December0

Sunrise / Sunset

Daylight Mountain Time (MT) Longest: 16h 20m · Shortest: 7h 40m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Time (MT))
Month Sunrise Sunset Daylight
January8:42 AM4:51 PM8h 09m
February7:59 AM5:43 PM9h 44m
March8:01 AM7:33 PM11h 32m
April6:50 AM8:25 PM13h 35m
May5:53 AM9:13 PM15h 19m
June5:28 AM9:46 PM16h 18m
July5:46 AM9:39 PM15h 54m
August6:30 AM8:52 PM14h 22m
September7:20 AM7:42 PM12h 22m
October8:10 AM6:34 PM10h 23m
November8:04 AM4:40 PM8h 36m
December8:42 AM4:23 PM7h 42m

Nearby Stations

Springbank A, AB June 6 - August 23 Calgary Int'L A, AB May 21 - September 17 Calgary Int'L Cs, AB May 17 - September 23 Okotoks, ABMay 23 - September 13 Madden, ABMay 26 - September 7 Kananaskis, ABJune 16 - August 15

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