Frost Dates for Mildred Lake, 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 12
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 25
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 17
First Fall Frost September 20

Hard Freeze (−2°C)

Last Spring Hard Freeze May 2
First Fall Hard Freeze October 6
57.03°N, -111.57°W © OpenStreetMap

Growing Season

136 Days May 12 to September 25

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

-25° -10° 5° 20°
-17°
High: -12°C
Avg: -17°C
Low: -21°C
Jan
-13°
High: -8°C
Avg: -13°C
Low: -19°C
Feb
-6°
High: 0°C
Avg: -6°C
Low: -12°C
Mar
3°
High: 9°C
Avg: 3°C
Low: -3°C
Apr
11°
High: 17°C
Avg: 11°C
Low: 5°C
May
16°
High: 22°C
Avg: 16°C
Low: 10°C
Jun
19°
High: 24°C
Avg: 19°C
Low: 13°C
Jul
17°
High: 23°C
Avg: 17°C
Low: 11°C
Aug
11°
High: 17°C
Avg: 11°C
Low: 6°C
Sep
4°
High: 8°C
Avg: 4°C
Low: 0°C
Oct
-7°
High: -4°C
Avg: -7°C
Low: -11°C
Nov
-14°
High: -10°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
0 mm
0.0 mm
Jan
3 mm
2.5 mm
Feb
3 mm
2.5 mm
Mar
3 mm
2.5 mm
Apr
23 mm
22.9 mm
May
71 mm
71.1 mm
Jun
71 mm
71.1 mm
Jul
61 mm
61.0 mm
Aug
48 mm
48.3 mm
Sep
8 mm
7.6 mm
Oct
5 mm
5.1 mm
Nov
3 mm
2.5 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7h9h11.5h14h16h17.5h17h15h12.5h10h7.5h6.5h
Jan: 8:28 AM – 3:32 PM · 7h 05m
Feb: 7:25 AM – 4:35 PM · 9h 09m
Mar: 6:17 AM – 5:43 PM · 11h 25m
Apr: 5:01 AM – 6:59 PM · 13h 59m
May: 3:53 AM – 8:07 PM · 16h 13m
Jun: 3:13 AM – 8:47 PM · 17h 33m
Jul: 3:30 AM – 8:30 PM · 16h 59m
Aug: 4:31 AM – 7:29 PM · 14h 58m
Sep: 5:46 AM – 6:14 PM · 12h 27m
Oct: 7:00 AM – 4:60 PM · 9h 59m
Nov: 8:09 AM – 3:51 PM · 7h 41m
Dec: 8:47 AM – 3:13 PM · 6h 26m
Daylight Longest: 17h 36m · Shortest: 6h 24m

Nearby Stations

Fort Mcmurray Cs, AB May 27 - September 10

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