Best time to visit Index, WA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Index runs from June through September — 4 months of pleasant temperatures and modest rainfall.
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 36m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 9h 59m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 11h 39m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 13h 24m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 14h 56m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 15h 44m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 26m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 14h 6m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 20m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 10h 34m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 60m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 13m
Looking for similar climates? See Index's climate twins. Or jump straight to the full climate profile.