Best time to visit Castle Rock, WA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Castle Rock runs from April through October — 7 months of pleasant temperatures and modest rainfall.
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 48m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 10h 6m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 11h 40m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 13h 20m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 14h 47m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 15h 32m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 15m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 13h 59m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 19m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 39m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 9h 10m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 26m
Looking for similar climates? See Castle Rock's climate twins. Or jump straight to the full climate profile.