Weather Averages for Castle Rock, WA

7-day Forecast / 10-day Forecast

Latitude: 46°10'N, Longitude: 122°55'W, Elevation: 10.0 ft, Distance: 8.98 mi Castle Rock, WA Averages »

	Unit	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Average temperature over 68 years	°F	51	39	42	44	48	55	59	64	64	60	53	44	39
Average high temperature over 68 years	°F	61	45	50	55	60	67	71	77	77	73	63	52	46
Average low temperature over 68 years	°F	41	32	34	36	38	43	48	51	51	48	43	37	34
Average precipitation over 68 years	in	46.1	6.2	4.9	4.6	3.3	2.5	2.1	0.9	1.3	2.1	4.2	6.7	7.4
Average snowfall over 68 years	in	5.4	3.1	1.0	0.5	-	-	-	-	-	-	-	0.2	0.7
Average snow cover over 68 years	in	-	-	-	-	-	-	-	-	-	-	-	-	-
Heating degree days over 30 years	days	5094	806	633	605	480	326	167	72	82	155	381	603	784
Cooling degree days over 30 years	days	132	-	-	-	-	-	11	35	66	20	-	-	-

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