Frost Dates for Cowan, MB

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 9
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 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 June 16
First Fall Frost August 13

Hard Freeze (−2°C)

Last Spring Hard Freeze May 26
First Fall Hard Freeze September 18
52.03°N, -100.65°W © OpenStreetMap

Growing Season

77 Days June 9 to August 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 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: -10°C
Avg: -16°C
Low: -22°C
Jan
-14°
High: -7°C
Avg: -14°C
Low: -20°C
Feb
-7°
High: 0°C
Avg: -7°C
Low: -14°C
Mar
2°
High: 10°C
Avg: 2°C
Low: -5°C
Apr
10°
High: 17°C
Avg: 10°C
Low: 2°C
May
15°
High: 22°C
Avg: 15°C
Low: 8°C
Jun
18°
High: 26°C
Avg: 18°C
Low: 11°C
Jul
17°
High: 24°C
Avg: 17°C
Low: 9°C
Aug
11°
High: 18°C
Avg: 11°C
Low: 4°C
Sep
4°
High: 9°C
Avg: 4°C
Low: -2°C
Oct
-6°
High: -1°C
Avg: -6°C
Low: -11°C
Nov
-13°
High: -8°C
Avg: -13°C
Low: -18°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm
23 mm
22.9 mm
Jan
15 mm
15.2 mm
Feb
18 mm
17.8 mm
Mar
30 mm
30.5 mm
Apr
66 mm
66.0 mm
May
107 mm
106.7 mm
Jun
86 mm
86.4 mm
Jul
69 mm
68.6 mm
Aug
66 mm
66.0 mm
Sep
48 mm
48.3 mm
Oct
15 mm
15.2 mm
Nov
18 mm
17.8 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8h9.5h11.5h13.5h15.5h16.5h16h14.5h12.5h10.5h8.5h7.5h
Jan: 7:60 AM – 4:00 PM · 8h 01m
Feb: 7:10 AM – 4:50 PM · 9h 39m
Mar: 6:14 AM – 5:46 PM · 11h 31m
Apr: 5:11 AM – 6:49 PM · 13h 38m
May: 4:17 AM – 7:43 PM · 15h 27m
Jun: 3:46 AM – 8:14 PM · 16h 28m
Jul: 3:59 AM – 8:01 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 29m
Dec: 8:14 AM – 3:46 PM · 7h 32m
Daylight Longest: 16h 30m · Shortest: 7h 30m

Nearby Stations

Swan River Rcs, MB May 23 - September 19 Boggy Creek, MB June 3 - September 2 Mafeking, MBMay 25 - September 22 Pelly, SKMay 31 - September 10 Pelly 2, SKMay 21 - September 19 Gilbert Plains, MB May 26 - September 17

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