Frost Dates for Key Lake, SK

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. June 8
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. August 27
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 14
First Fall Frost August 16

Hard Freeze (−2°C)

Last Spring Hard Freeze May 25
First Fall Hard Freeze September 17
57.25°N, -105.62°W © OpenStreetMap

Growing Season

80 Days June 8 to August 27

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 1b

Avg. annual minimum: −55 to −50°F (−48 to −46°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Dfc Subarctic

Short, cool summers and long, very cold winters. Growing seasons of 3–4 months require fast-maturing varieties. Root vegetables, potatoes, and cold-hardy greens are the most reliable.

Köppen climate map

Temperature

-30° -15° 0° 15°
-22°
High: -16°C
Avg: -22°C
Low: -28°C
Jan
-19°
High: -12°C
Avg: -19°C
Low: -25°C
Feb
-12°
High: -5°C
Avg: -12°C
Low: -20°C
Mar
-2°
High: 5°C
Avg: -2°C
Low: -9°C
Apr
6°
High: 13°C
Avg: 6°C
Low: 0°C
May
14°
High: 20°C
Avg: 14°C
Low: 7°C
Jun
16°
High: 23°C
Avg: 16°C
Low: 10°C
Jul
15°
High: 21°C
Avg: 15°C
Low: 9°C
Aug
9°
High: 13°C
Avg: 9°C
Low: 4°C
Sep
0°
High: 4°C
Avg: 0°C
Low: -3°C
Oct
-11°
High: -7°C
Avg: -11°C
Low: -15°C
Nov
-19°
High: -14°C
Avg: -19°C
Low: -25°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
10 mm
10.2 mm
Jan
3 mm
2.5 mm
Feb
18 mm
17.8 mm
Mar
13 mm
12.7 mm
Apr
28 mm
27.9 mm
May
64 mm
63.5 mm
Jun
97 mm
96.5 mm
Jul
76 mm
76.2 mm
Aug
69 mm
68.6 mm
Sep
30 mm
30.5 mm
Oct
18 mm
17.8 mm
Nov
3 mm
2.5 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec7h9h11.5h14h16.5h17.5h17h15h12.5h10h7.5h6.5h
Jan: 8:29 AM – 3:31 PM · 7h 02m
Feb: 7:26 AM – 4:34 PM · 9h 08m
Mar: 6:18 AM – 5:42 PM · 11h 25m
Apr: 5:00 AM – 6:60 PM · 13h 60m
May: 3:52 AM – 8:08 PM · 16h 16m
Jun: 3:12 AM – 8:48 PM · 17h 37m
Jul: 3:29 AM – 8:31 PM · 17h 02m
Aug: 4:30 AM – 7:30 PM · 14h 59m
Sep: 5:46 AM – 6:14 PM · 12h 28m
Oct: 7:01 AM – 4:59 PM · 9h 58m
Nov: 8:11 AM – 3:49 PM · 7h 39m
Dec: 8:48 AM – 3:12 PM · 6h 23m
Daylight Longest: 17h 39m · Shortest: 6h 21m

Nearby Stations

Cigar Lake, SKJune 7 - August 31

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