Frost Dates for Sibbald Westgard, AB

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 25
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 14
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 29
First Fall Frost September 8

Hard Freeze (−2°C)

Last Spring Hard Freeze May 12
First Fall Hard Freeze September 27
51.42°N, -110.15°W © OpenStreetMap

Growing Season

112 Days May 25 to September 14

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.

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

-20° -5° 10° 25°
-13°
High: -7°C
Avg: -13°C
Low: -18°C
Jan
-10°
High: -4°C
Avg: -10°C
Low: -16°C
Feb
-5°
High: 1°C
Avg: -5°C
Low: -11°C
Mar
5°
High: 12°C
Avg: 5°C
Low: -3°C
Apr
11°
High: 19°C
Avg: 11°C
Low: 3°C
May
15°
High: 22°C
Avg: 15°C
Low: 8°C
Jun
19°
High: 27°C
Avg: 19°C
Low: 11°C
Jul
18°
High: 26°C
Avg: 18°C
Low: 10°C
Aug
13°
High: 21°C
Avg: 13°C
Low: 4°C
Sep
5°
High: 12°C
Avg: 5°C
Low: -2°C
Oct
-4°
High: 2°C
Avg: -4°C
Low: -9°C
Nov
-10°
High: -5°C
Avg: -10°C
Low: -16°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 20 mm 40 mm 60 mm 80 mm
0 mm
0.0 mm
Jan
3 mm
2.5 mm
Feb
3 mm
2.5 mm
Mar
8 mm
7.6 mm
Apr
30 mm
30.5 mm
May
71 mm
71.1 mm
Jun
48 mm
48.3 mm
Jul
36 mm
35.6 mm
Aug
25 mm
25.4 mm
Sep
0 mm
0.0 mm
Oct
3 mm
2.5 mm
Nov
3 mm
2.5 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h16.5h16h14.5h12.5h10.5h8.5h7.5h
Jan: 7:57 AM – 4:03 PM · 8h 06m
Feb: 7:09 AM – 4:51 PM · 9h 42m
Mar: 6:14 AM – 5:46 PM · 11h 32m
Apr: 5:12 AM – 6:48 PM · 13h 36m
May: 4:19 AM – 7:41 PM · 15h 22m
Jun: 3:49 AM – 8:11 PM · 16h 22m
Jul: 4:02 AM – 7:58 PM · 15h 57m
Aug: 4:48 AM – 7:12 PM · 14h 23m
Sep: 5:49 AM – 6:11 PM · 12h 22m
Oct: 6:49 AM – 5:11 PM · 10h 22m
Nov: 7:43 AM – 4:17 PM · 8h 34m
Dec: 8:11 AM – 3:49 PM · 7h 38m
Daylight Longest: 16h 23m · Shortest: 7h 37m

Nearby Stations

Oyen Cara, AB May 23 - September 19 Esther 1, ABMay 22 - September 19 Oyen Cappon, AB May 22 - September 18 Kindersley A, SK May 20 - September 21 Leader Airport, SK May 21 - September 19 Coronation Climate, AB May 29 - September 11

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