Frost Dates for Hanna, AB

Based on data from Craigmyle weather station, 19 miles away

Elevation: 826 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 25
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 12

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 September 8

Hard Freeze (−2°C)

Last Spring Hard Freeze May 12
First Fall Hard Freeze September 22
51.63°N, 111.90°W © OpenStreetMap

Growing Season

110 Days May 25 to September 12

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°-12°-17°
February-3°-9°-15°
March2°-4°-9°
April11°4°-3°
May18°10°3°
June21°14°7°
July25°17°10°
August24°16°9°
September19°12°4°
October11°4°-2°
November1°-4°-10°
December-5°-10°-16°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January5
February0
March15
April23
May56
June99
July71
August58
September25
October3
November10
December5

Sunrise / Sunset

Daylight Mountain Time (MT) Longest: 16h 27m · Shortest: 7h 33m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Mountain Time (MT))
Month Sunrise Sunset Daylight
January8:37 AM4:40 PM8h 03m
February7:53 AM5:34 PM9h 40m
March7:53 AM7:24 PM11h 31m
April6:41 AM8:18 PM13h 37m
May5:43 AM9:08 PM15h 25m
June5:17 AM9:42 PM16h 25m
July5:35 AM9:35 PM16h 00m
August6:21 AM8:46 PM14h 25m
September7:12 AM7:35 PM12h 23m
October8:04 AM6:25 PM10h 21m
November7:59 AM4:30 PM8h 31m
December8:38 AM4:12 PM7h 34m

Nearby Stations

Drumheller East, AB May 12 - September 19 Sleepy Hollow, AB May 30 - September 1 Three Hills, AB May 22 - September 15 Coronation Climate, AB May 29 - September 11 Hussar Agdm, AB May 16 - September 20 Forestburg Plant Site, AB May 12 - September 25

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