Frost Dates for Medicine Hat Rcs, AB

Elevation: 715 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 14
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 27

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 18
First Fall Frost September 23

Hard Freeze (−2°C)

Last Spring Hard Freeze May 5
First Fall Hard Freeze October 2
50.03°N, 110.72°W © OpenStreetMap

Growing Season

136 Days May 14 to September 27

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.
BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

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-2°-7°-13°
February-2°-7°-13°
March5°-1°-7°
April13°6°-1°
May19°12°5°
June23°16°10°
July28°21°13°
August27°19°11°
September21°14°6°
October13°6°0°
November5°-1°-7°
December-2°-7°-12°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January0
February0
March0
April18
May36
June66
July25
August33
September25
October8
November5
December0

Sunrise / Sunset

Daylight Mountain Time (MT) Longest: 16h 09m · Shortest: 7h 51m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Time (MT))
Month Sunrise Sunset Daylight
January8:23 AM4:42 PM8h 19m
February7:43 AM5:32 PM9h 49m
March7:46 AM7:19 PM11h 33m
April6:37 AM8:09 PM13h 31m
May5:43 AM8:55 PM15h 12m
June5:19 AM9:27 PM16h 08m
July5:36 AM9:21 PM15h 44m
August6:19 AM8:35 PM14h 16m
September7:07 AM7:28 PM12h 21m
October7:55 AM6:21 PM10h 27m
November7:46 AM4:30 PM8h 44m
December8:23 AM4:15 PM7h 52m

Nearby Stations

Bow Island, AB May 11 - September 21 Maple Creek, SK May 21 - September 18 Cypress Hills Park, SK May 23 - September 23 Cypress Hills, SK June 7 - August 30 Brooks, ABMay 18 - September 20 Onefour Cda, AB May 14 - September 24

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