Frost Dates for Wardner Ktny Hatchery, BC

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 24
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 13
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 29
First Fall Frost September 7

Hard Freeze (−2°C)

Last Spring Hard Freeze May 5
First Fall Hard Freeze October 6
49.47°N, -115.47°W © OpenStreetMap

Growing Season

112 Days May 24 to September 13

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 5a

Avg. annual minimum: −20 to −15°F (−29 to −26°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

-10° 0° 10° 20° 30°
-5°
High: -1°C
Avg: -5°C
Low: -9°C
Jan
-2°
High: 3°C
Avg: -2°C
Low: -7°C
Feb
3°
High: 9°C
Avg: 3°C
Low: -4°C
Mar
7°
High: 14°C
Avg: 7°C
Low: 0°C
Apr
12°
High: 20°C
Avg: 12°C
Low: 4°C
May
15°
High: 23°C
Avg: 15°C
Low: 8°C
Jun
19°
High: 28°C
Avg: 19°C
Low: 10°C
Jul
18°
High: 28°C
Avg: 18°C
Low: 9°C
Aug
13°
High: 22°C
Avg: 13°C
Low: 5°C
Sep
6°
High: 13°C
Avg: 6°C
Low: 0°C
Oct
0°
High: 4°C
Avg: 0°C
Low: -4°C
Nov
-5°
High: -1°C
Avg: -5°C
Low: -8°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
20 mm
20.3 mm
Jan
8 mm
7.6 mm
Feb
8 mm
7.6 mm
Mar
18 mm
17.8 mm
Apr
48 mm
48.3 mm
May
71 mm
71.1 mm
Jun
41 mm
40.6 mm
Jul
23 mm
22.9 mm
Aug
28 mm
27.9 mm
Sep
15 mm
15.2 mm
Oct
46 mm
45.7 mm
Nov
33 mm
33.0 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:48 AM – 4:12 PM · 8h 23m
Feb: 7:04 AM – 4:56 PM · 9h 52m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:15 AM – 6:45 PM · 13h 29m
May: 4:26 AM – 7:34 PM · 15h 08m
Jun: 3:59 AM – 8:01 PM · 16h 02m
Jul: 4:10 AM – 7:50 PM · 15h 40m
Aug: 4:53 AM – 7:07 PM · 14h 13m
Sep: 5:50 AM – 6:10 PM · 12h 21m
Oct: 6:46 AM – 5:14 PM · 10h 29m
Nov: 7:36 AM – 4:24 PM · 8h 48m
Dec: 8:01 AM – 3:59 PM · 7h 58m
Daylight Longest: 16h 04m · Shortest: 7h 56m

Nearby Stations

Cranbrook A, BC May 15 - September 23 Fernie, BCMay 30 - September 9 Baynes Lake Kootenay River, BC May 27 - September 9 Kimberley Pcc, BC May 18 - September 20 Wasa, BCMay 12 - September 30 Sparwood, BCMay 28 - September 6

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