Frost Dates for Fort Mcmurray Cs, 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 27
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 10
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 3
First Fall Frost September 3

Hard Freeze (−2°C)

Last Spring Hard Freeze May 13
First Fall Hard Freeze September 22
56.65°N, -111.22°W © OpenStreetMap

Growing Season

106 Days May 27 to September 10

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

-25° -10° 5° 20°
-16°
High: -11°C
Avg: -16°C
Low: -22°C
Jan
-13°
High: -6°C
Avg: -13°C
Low: -19°C
Feb
-6°
High: 0°C
Avg: -6°C
Low: -13°C
Mar
3°
High: 10°C
Avg: 3°C
Low: -4°C
Apr
10°
High: 17°C
Avg: 10°C
Low: 3°C
May
15°
High: 22°C
Avg: 15°C
Low: 8°C
Jun
18°
High: 24°C
Avg: 18°C
Low: 11°C
Jul
16°
High: 23°C
Avg: 16°C
Low: 9°C
Aug
10°
High: 17°C
Avg: 10°C
Low: 4°C
Sep
3°
High: 8°C
Avg: 3°C
Low: -2°C
Oct
-7°
High: -3°C
Avg: -7°C
Low: -12°C
Nov
-14°
High: -9°C
Avg: -14°C
Low: -19°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
3 mm
2.5 mm
Jan
0 mm
0.0 mm
Feb
3 mm
2.5 mm
Mar
5 mm
5.1 mm
Apr
23 mm
22.9 mm
May
74 mm
73.7 mm
Jun
76 mm
76.2 mm
Jul
53 mm
53.3 mm
Aug
36 mm
35.6 mm
Sep
18 mm
17.8 mm
Oct
0 mm
0.0 mm
Nov
5 mm
5.1 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7h9h11.5h14h16h17.5h17h15h12.5h10h8h6.5h
Jan: 8:25 AM – 3:35 PM · 7h 10m
Feb: 7:24 AM – 4:36 PM · 9h 12m
Mar: 6:17 AM – 5:43 PM · 11h 26m
Apr: 5:02 AM – 6:58 PM · 13h 57m
May: 3:55 AM – 8:05 PM · 16h 09m
Jun: 3:16 AM – 8:44 PM · 17h 27m
Jul: 3:33 AM – 8:27 PM · 16h 54m
Aug: 4:32 AM – 7:28 PM · 14h 55m
Sep: 5:47 AM – 6:13 PM · 12h 27m
Oct: 6:60 AM – 5:00 PM · 10h 01m
Nov: 8:07 AM – 3:53 PM · 7h 45m
Dec: 8:44 AM – 3:16 PM · 6h 32m
Daylight Longest: 17h 30m · Shortest: 6h 30m

Nearby Stations

Mildred Lake, AB May 12 - September 25

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