Monthly Historical AveragesSeattle-Tacoma International Air, WA
Average Temperature
High
14°
Feels 13
Low
6°
Feels 4
Average Precipitation
14 Days
75.2mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastTuesday, April 21, 2026
Day
15°Feels 14
Wind
13 km/h SW
Gust
20 km/h
Humidity
63%
P.O.P
60%
Rain
~1 mm
Night
9°Feels 6
Wind
16 km/h S
Gust
24 km/h
Humidity
93%
P.O.P
80%
Rain
2-4 mm
Historical AveragesApr 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity