Frost Dates for Heriot Bay Se, 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. March 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. November 12
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 April 5
First Fall Frost November 6

Hard Freeze (−2°C)

Last Spring Hard Freeze February 18
First Fall Hard Freeze November 30
50.10°N, -125.20°W © OpenStreetMap

Growing Season

228 Days March 29 to November 12

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 9a

Avg. annual minimum: 20 to 25°F (−7 to −4°C)

Learn more

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

Cfb Oceanic (Marine West Coast)

Mild year-round with cool summers and wet winters. Excellent for cool-season crops like brassicas, peas, and root vegetables. Extended harvest seasons but summer heat-loving crops may struggle.

Köppen climate map

Temperature

0° 10° 20°
4°
High: 6°C
Avg: 4°C
Low: 2°C
Jan
4°
High: 7°C
Avg: 4°C
Low: 1°C
Feb
6°
High: 9°C
Avg: 6°C
Low: 3°C
Mar
9°
High: 13°C
Avg: 9°C
Low: 5°C
Apr
13°
High: 18°C
Avg: 13°C
Low: 8°C
May
16°
High: 20°C
Avg: 16°C
Low: 11°C
Jun
18°
High: 24°C
Avg: 18°C
Low: 13°C
Jul
18°
High: 23°C
Avg: 18°C
Low: 13°C
Aug
15°
High: 19°C
Avg: 15°C
Low: 11°C
Sep
10°
High: 13°C
Avg: 10°C
Low: 7°C
Oct
6°
High: 8°C
Avg: 6°C
Low: 3°C
Nov
4°
High: 6°C
Avg: 4°C
Low: 2°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 75 mm 150 mm 225 mm
226 mm
226.1 mm
Jan
142 mm
142.2 mm
Feb
142 mm
142.2 mm
Mar
94 mm
94.0 mm
Apr
74 mm
73.7 mm
May
71 mm
71.1 mm
Jun
28 mm
27.9 mm
Jul
43 mm
43.2 mm
Aug
109 mm
109.2 mm
Sep
201 mm
200.7 mm
Oct
249 mm
248.9 mm
Nov
239 mm
238.8 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h16h14.5h12.5h10.5h8.5h8h
Jan: 7:51 AM – 4:09 PM · 8h 18m
Feb: 7:06 AM – 4:54 PM · 9h 49m
Mar: 6:14 AM – 5:46 PM · 11h 33m
Apr: 5:14 AM – 6:46 PM · 13h 32m
May: 4:24 AM – 7:36 PM · 15h 12m
Jun: 3:56 AM – 8:04 PM · 16h 08m
Jul: 4:07 AM – 7:53 PM · 15h 45m
Aug: 4:52 AM – 7:08 PM · 14h 16m
Sep: 5:49 AM – 6:11 PM · 12h 21m
Oct: 6:47 AM – 5:13 PM · 10h 27m
Nov: 7:38 AM – 4:22 PM · 8h 44m
Dec: 8:04 AM – 3:56 PM · 7h 52m
Daylight Longest: 16h 10m · Shortest: 7h 50m

Nearby Stations

Cape Mudge, BC March 22 - November 14 Quinsam River Hatchery, BC April 22 - October 25 Campbell River A, BC April 28 - October 10 Cortes Island Tiber Bay, BC April 21 - October 28 Chatham Point, BC March 5 - November 27 Courtenay Meadowbrook, BC April 20 - October 24

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