Best time to visit Rock Island, WA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Rock Island runs from April through October — 7 months of pleasant temperatures and modest rainfall.
Winter weather. Plan around weather; good for snow sports if applicable.
Daylight ≈ 8h 40m
Winter weather. Plan around weather; good for snow sports if applicable.
Daylight ≈ 10h 1m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 11h 39m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 13h 23m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 14h 54m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 41m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 15h 23m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 14h 4m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 12h 19m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 35m
Winter weather. Plan around weather; good for snow sports if applicable.
Daylight ≈ 9h 3m
Winter weather. Plan around weather; good for snow sports if applicable.
Daylight ≈ 8h 16m
Looking for similar climates? See Rock Island's climate twins. Or jump straight to the full climate profile.