Monthly Historical AveragesCastle Rock, WA
Average Temperature
High
7°
Feels 6
Low
1°
Feels -1
Average Precipitation
14 Days
128.1mm
3cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, January 7, 2026
Day
5°Feels 2
Wind
22 km/h S
Gust
33 km/h
Humidity
87%
P.O.P
100%
Rain
~5 mm
Night
1°Feels -2
Wind
13 km/h SW
Gust
20 km/h
Humidity
93%
P.O.P
80%
Rain
~5 mm
Historical AveragesJan 7
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity