Frost Dates for Port Alberni Cox Lake, 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. April 29
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. October 20
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 7
First Fall Frost October 10

Hard Freeze (−2°C)

Last Spring Hard Freeze March 22
First Fall Hard Freeze November 14
49.20°N, -124.75°W © OpenStreetMap

Growing Season

174 Days April 29 to October 20

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 8b

Avg. annual minimum: 15 to 20°F (−9 to −7°C)

Learn more

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

Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

0° 10° 20°
3°
High: 6°C
Avg: 3°C
Low: 0°C
Jan
4°
High: 8°C
Avg: 4°C
Low: 0°C
Feb
6°
High: 10°C
Avg: 6°C
Low: 1°C
Mar
8°
High: 14°C
Avg: 8°C
Low: 3°C
Apr
12°
High: 18°C
Avg: 12°C
Low: 6°C
May
15°
High: 20°C
Avg: 15°C
Low: 9°C
Jun
18°
High: 24°C
Avg: 18°C
Low: 11°C
Jul
18°
High: 25°C
Avg: 18°C
Low: 11°C
Aug
15°
High: 22°C
Avg: 15°C
Low: 8°C
Sep
10°
High: 15°C
Avg: 10°C
Low: 5°C
Oct
5°
High: 8°C
Avg: 5°C
Low: 2°C
Nov
3°
High: 5°C
Avg: 3°C
Low: 1°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 100 mm 200 mm 300 mm
353 mm
353.1 mm
Jan
193 mm
193.0 mm
Feb
229 mm
228.6 mm
Mar
140 mm
139.7 mm
Apr
91 mm
91.4 mm
May
58 mm
58.4 mm
Jun
20 mm
20.3 mm
Jul
56 mm
55.9 mm
Aug
69 mm
68.6 mm
Sep
236 mm
236.2 mm
Oct
361 mm
360.7 mm
Nov
345 mm
345.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:47 AM – 4:13 PM · 8h 26m
Feb: 7:04 AM – 4:56 PM · 9h 53m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:16 AM – 6:44 PM · 13h 29m
May: 4:27 AM – 7:33 PM · 15h 06m
Jun: 4:00 AM – 7:60 PM · 15h 60m
Jul: 4:11 AM – 7:49 PM · 15h 37m
Aug: 4:54 AM – 7:06 PM · 14h 12m
Sep: 5:50 AM – 6:10 PM · 12h 21m
Oct: 6:45 AM – 5:15 PM · 10h 30m
Nov: 7:35 AM – 4:25 PM · 8h 50m
Dec: 7:60 AM – 4:00 PM · 8h 00m
Daylight Longest: 16h 01m · Shortest: 7h 59m

Nearby Stations

Port Alberni (Aut), BC April 26 - October 23 Alberni Robertson Creek, BC April 25 - October 27 Little Qualicum Hatchery, BC May 1 - October 9 Qualicum R Fish Research, BC April 11 - October 29 Coombs, BCMay 3 - October 9 Mud Bay, BCApril 15 - October 28

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