Frost Dates for Westlock, Canada

Based on data from Busby weather station, 10 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. May 21
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. September 20
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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 26
First Fall Frost September 16

Hard Freeze (−2°C)

Last Spring Hard Freeze May 8
First Fall Hard Freeze October 1
54.15°N, -113.87°W © OpenStreetMap

Growing Season

122 Days May 21 to September 20

USDA Hardiness Zone iHardiness 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: −35 to −30°F (−37 to −34°C)

Learn more

Köppen Climate iThe 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

-20° -5° 10° 25°
-12°
High: -7°C
Avg: -12°C
Low: -17°C
Jan
-9°
High: -4°C
Avg: -9°C
Low: -15°C
Feb
-5°
High: 0°C
Avg: -5°C
Low: -10°C
Mar
4°
High: 10°C
Avg: 4°C
Low: -2°C
Apr
10°
High: 17°C
Avg: 10°C
Low: 4°C
May
14°
High: 20°C
Avg: 14°C
Low: 8°C
Jun
17°
High: 23°C
Avg: 17°C
Low: 11°C
Jul
16°
High: 22°C
Avg: 16°C
Low: 9°C
Aug
11°
High: 17°C
Avg: 11°C
Low: 5°C
Sep
5°
High: 10°C
Avg: 5°C
Low: -1°C
Oct
-5°
High: 0°C
Avg: -5°C
Low: -9°C
Nov
-10°
High: -5°C
Avg: -10°C
Low: -15°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 30 mm 60 mm 90 mm
18 mm
17.8 mm
Jan
0 mm
0.0 mm
Feb
5 mm
5.1 mm
Mar
28 mm
27.9 mm
Apr
46 mm
45.7 mm
May
84 mm
83.8 mm
Jun
91 mm
91.4 mm
Jul
51 mm
50.8 mm
Aug
28 mm
27.9 mm
Sep
15 mm
15.2 mm
Oct
8 mm
7.6 mm
Nov
8 mm
7.6 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7.5h9.5h11.5h14h15.5h17h16.5h14.5h12.5h10h8h7h
Jan: 8:10 AM – 3:50 PM · 7h 41m
Feb: 7:16 AM – 4:44 PM · 9h 28m
Mar: 6:16 AM – 5:44 PM · 11h 29m
Apr: 5:07 AM – 6:53 PM · 13h 46m
May: 4:08 AM – 7:52 PM · 15h 43m
Jun: 3:34 AM – 8:26 PM · 16h 51m
Jul: 3:49 AM – 8:11 PM · 16h 23m
Aug: 4:41 AM – 7:19 PM · 14h 38m
Sep: 5:48 AM – 6:12 PM · 12h 24m
Oct: 6:54 AM – 5:06 PM · 10h 12m
Nov: 7:54 AM – 4:06 PM · 8h 12m
Dec: 8:26 AM – 3:34 PM · 7h 09m
Daylight Longest: 16h 53m · Shortest: 7h 07m

Nearby Stations

Dapp Agdm, ABMay 28 - August 21 Barrhead Cs, AB May 21 - September 15 Edmonton Namao Awos A, AB May 19 - September 16 Edmonton Stony Plain, AB May 12 - September 22 Edmonton Stony Plain Cs, AB May 8 - September 23 Edmonton Municipal Cr10, AB May 5 - September 27

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