Best time to visit Black Diamond, WA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Black Diamond runs from May through September — 5 months of pleasant temperatures and modest rainfall.
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 40m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 10h 1m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 11h 39m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 13h 23m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 14h 53m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 15h 40m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 22m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 14h 3m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 19m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 10h 35m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 9h 3m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 17m
Looking for similar climates? See Black Diamond's climate twins. Or jump straight to the full climate profile.