Best time to visit St. Helens, OR
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in St. Helens 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 51m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 10h 7m
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 19m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 14h 44m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 28m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 12m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 13h 57m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 12h 18m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 40m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 9h 12m
Winter weather. Plan around weather; good for snow sports if applicable.
Daylight ≈ 8h 29m
Looking for similar climates? See St. Helens's climate twins. Or jump straight to the full climate profile.