Monthly Historical AveragesSisters Island, BC
Average Temperature
High
11°
Feels 10
Low
7°
Feels 4
Average Precipitation
9 Days
51.4mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, April 21, 2026
Day
13°Feels 12
Wind
12 km/h NW
Gust
18 km/h
Humidity
77%
P.O.P
40%
Rain
1-3 mm
Night
10°Feels 7
Wind
22 km/h NW
Gust
33 km/h
Humidity
88%
P.O.P
60%
Rain
~1 mm
Historical AveragesApr 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity