Frost Dates for Sisters Island, BC
Elevation: 20 m
Frost Dates
Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide.
February 7
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date.
December 7
30% Probability
Only 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
February 18
First Fall Frost
December 2
Growing Season
304 Days
February 7 to December 7
USDA Hardiness Zone
Hardiness 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 9b
Avg. annual minimum: −4 to −1°C
Köppen Climate
The 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.
Temperature
0°
10°
20°
Avg High
Avg Temp
Avg Low
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 7° | 6° | 5° |
| February | 8° | 6° | 4° |
| March | 9° | 7° | 6° |
| April | 12° | 10° | 8° |
| May | 16° | 13° | 11° |
| June | 18° | 16° | 14° |
| July | 21° | 18° | 16° |
| August | 21° | 19° | 16° |
| September | 18° | 16° | 14° |
| October | 13° | 11° | 10° |
| November | 10° | 8° | 7° |
| December | 7° | 6° | 5° |
Precipitation
0 mm
50 mm
100 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 81 |
| February | 18 |
| March | 58 |
| April | 20 |
| May | 5 |
| June | 13 |
| July | 8 |
| August | 3 |
| September | 18 |
| October | 109 |
| November | 33 |
| December | 48 |
Sunrise / Sunset
Daylight
Longest: 16h 04m · Shortest: 7h 56m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:48 AM | 4:12 PM | 8h 23m |
| February | 7:04 AM | 4:56 PM | 9h 52m |
| March | 6:13 AM | 5:47 PM | 11h 34m |
| April | 5:15 AM | 6:45 PM | 13h 30m |
| May | 4:26 AM | 7:34 PM | 15h 08m |
| June | 3:59 AM | 8:01 PM | 16h 02m |
| July | 4:10 AM | 7:50 PM | 15h 40m |
| August | 4:53 AM | 7:07 PM | 14h 13m |
| September | 5:50 AM | 6:10 PM | 12h 21m |
| October | 6:46 AM | 5:14 PM | 10h 29m |
| November | 7:36 AM | 4:24 PM | 8h 48m |
| December | 8:01 AM | 3:59 PM | 7h 57m |
Nearby Stations
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