Monthly Historical AveragesCastle Rock, WA
Average Temperature
High
15°
Feels 14
Low
4°
Feels 3
Average Precipitation
15 Days
88.4mm
0.1cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastThursday, April 2, 2026
Day
11°Feels 9
Wind
18 km/h W
Gust
27 km/h
Humidity
58%
P.O.P
40%
Rain
~1 mm
Night
1°Feels -1
Wind
14 km/h S
Gust
21 km/h
Humidity
100%
P.O.P
20%
Historical AveragesApr 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity