Frost Dates for University Of Alberta Metaboli, 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 15
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 21
First Fall Frost September 16

Hard Freeze (−2°C)

Last Spring Hard Freeze May 2
First Fall Hard Freeze September 29
53.52°N, -113.53°W © OpenStreetMap

Growing Season

128 Days May 15 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
-8°
High: -2°C
Avg: -8°C
Low: -14°C
Feb
-4°
High: 2°C
Avg: -4°C
Low: -10°C
Mar
5°
High: 11°C
Avg: 5°C
Low: -2°C
Apr
11°
High: 18°C
Avg: 11°C
Low: 4°C
May
15°
High: 22°C
Avg: 15°C
Low: 9°C
Jun
18°
High: 25°C
Avg: 18°C
Low: 11°C
Jul
16°
High: 23°C
Avg: 16°C
Low: 10°C
Aug
11°
High: 17°C
Avg: 11°C
Low: 4°C
Sep
4°
High: 10°C
Avg: 4°C
Low: -2°C
Oct
-4°
High: 1°C
Avg: -4°C
Low: -9°C
Nov
-9°
High: -4°C
Avg: -9°C
Low: -14°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
3 mm
2.5 mm
Jan
0 mm
0.0 mm
Feb
3 mm
2.5 mm
Mar
10 mm
10.2 mm
Apr
58 mm
58.4 mm
May
79 mm
78.7 mm
Jun
94 mm
94.0 mm
Jul
69 mm
68.6 mm
Aug
36 mm
35.6 mm
Sep
8 mm
7.6 mm
Oct
3 mm
2.5 mm
Nov
5 mm
5.1 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h17h16.5h14.5h12.5h10h8.5h7h
Jan: 8:07 AM – 3:53 PM · 7h 46m
Feb: 7:15 AM – 4:45 PM · 9h 31m
Mar: 6:15 AM – 5:45 PM · 11h 29m
Apr: 5:08 AM – 6:52 PM · 13h 44m
May: 4:10 AM – 7:50 PM · 15h 39m
Jun: 3:37 AM – 8:23 PM · 16h 45m
Jul: 3:51 AM – 8:09 PM · 16h 18m
Aug: 4:43 AM – 7:17 PM · 14h 35m
Sep: 5:48 AM – 6:12 PM · 12h 24m
Oct: 6:53 AM – 5:07 PM · 10h 14m
Nov: 7:52 AM – 4:08 PM · 8h 16m
Dec: 8:23 AM – 3:37 PM · 7h 15m
Daylight Longest: 16h 47m · Shortest: 7h 13m

Nearby Stations

Edmonton Municipal Cr10, AB May 5 - September 27 Edmonton Namao Awos A, AB May 19 - September 16 Edmonton Woodbend, AB May 30 - September 12 Edmonton Int'L A, AB May 25 - September 11 Edmonton International Cs, AB May 26 - September 5 Fort Saskatchewan, AB May 21 - September 17

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