Frost Dates for Coronation Climate, 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 29
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 11
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 June 4
First Fall Frost September 7

Hard Freeze (−2°C)

Last Spring Hard Freeze May 14
First Fall Hard Freeze September 21
52.07°N, -111.45°W © OpenStreetMap

Growing Season

105 Days May 29 to September 11

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 3a

Avg. annual minimum: −40 to −35°F (−40 to −37°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°
-13°
High: -7°C
Avg: -13°C
Low: -18°C
Jan
-12°
High: -6°C
Avg: -12°C
Low: -17°C
Feb
-6°
High: -1°C
Avg: -6°C
Low: -11°C
Mar
3°
High: 9°C
Avg: 3°C
Low: -4°C
Apr
10°
High: 17°C
Avg: 10°C
Low: 2°C
May
14°
High: 20°C
Avg: 14°C
Low: 7°C
Jun
17°
High: 24°C
Avg: 17°C
Low: 9°C
Jul
16°
High: 24°C
Avg: 16°C
Low: 8°C
Aug
10°
High: 18°C
Avg: 10°C
Low: 3°C
Sep
3°
High: 10°C
Avg: 3°C
Low: -4°C
Oct
-5°
High: 0°C
Avg: -5°C
Low: -11°C
Nov
-11°
High: -6°C
Avg: -11°C
Low: -17°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
0 mm
0.0 mm
Feb
0 mm
0.0 mm
Mar
10 mm
10.2 mm
Apr
33 mm
33.0 mm
May
71 mm
71.1 mm
Jun
61 mm
61.0 mm
Jul
30 mm
30.5 mm
Aug
13 mm
12.7 mm
Sep
3 mm
2.5 mm
Oct
3 mm
2.5 mm
Nov
0 mm
0.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h16.5h16h14.5h12.5h10.5h8.5h7.5h
Jan: 7:60 AM – 4:00 PM · 8h 00m
Feb: 7:11 AM – 4:49 PM · 9h 39m
Mar: 6:14 AM – 5:46 PM · 11h 31m
Apr: 5:11 AM – 6:49 PM · 13h 38m
May: 4:16 AM – 7:44 PM · 15h 27m
Jun: 3:46 AM – 8:14 PM · 16h 29m
Jul: 3:58 AM – 8:02 PM · 16h 03m
Aug: 4:47 AM – 7:13 PM · 14h 27m
Sep: 5:49 AM – 6:11 PM · 12h 23m
Oct: 6:50 AM – 5:10 PM · 10h 20m
Nov: 7:46 AM – 4:14 PM · 8h 28m
Dec: 8:14 AM – 3:46 PM · 7h 31m
Daylight Longest: 16h 31m · Shortest: 7h 30m

Nearby Stations

Forestburg Plant Site, AB May 12 - September 25 Craigmyle, AB May 25 - September 12 Sedgewick Town, AB May 19 - September 15 Wainwright Cfb Airfield 21, AB May 17 - September 21 Esther 1, ABMay 22 - September 19 Oyen Cara, AB May 23 - September 19

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview