Monthly Historical AveragesFriday Harbor, WA
Average Temperature
High
10°
Feels 9
Low
4°
Feels 2
Average Precipitation
17 Days
96.3mm
0.5cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, March 18, 2026
Day
12°Feels 10
Wind
18 km/h SE
Gust
27 km/h
Humidity
88%
P.O.P
80%
Rain
2-4 mm
Night
8°Feels 5
Wind
18 km/h SE
Gust
27 km/h
Humidity
100%
P.O.P
80%
Rain
~5 mm
Historical AveragesMar 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity