Climate & Weather in Hillsboro
Hillsboro shares the broader Portland-area marine-west-coast climate: mild, dry summers and cool, wet winters, with overwhelmingly rain rather than snow.
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Learn moreA genuine four-season Portland-area climate
Hillsboro shares the broader Portland-metro climate documented in portland-or.js: mild summers (average July high near 86°F) and mild but genuinely wet winters, with annual precipitation running around 44 inches across roughly 70 rainy days a year -- overwhelmingly as rain rather than snow.
A Hillsboro-specific measurement station was not confirmed this pass
This record uses the broader Portland-metro climate figures documented for Portland elsewhere in this batch rather than an independently confirmed Hillsboro-specific measurement station -- disclosed as a reasonable regional estimate given Hillsboro's close proximity (roughly 17 miles west of downtown Portland) rather than a Hillsboro-specific figure.
Mount Hood and coast access
As with the rest of the Portland metro, Hillsboro residents have real, practical access to both Mount Hood (roughly 90 minutes) and the Pacific coast (roughly 80 miles), documented at the regional level in portland-or.js.
Key takeaways
- Hillsboro shares the Portland area's genuine marine-west-coast climate: mild summers, cool wet winters.
- A Hillsboro-specific climate station was not independently confirmed this pass -- this record uses the shared Portland-metro estimate.
- Hillsboro residents share the broader metro's real, practical access to both Mount Hood and the Pacific coast.
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