Climate & Weather in Olympia

Olympia shares Western Washington's genuine marine climate -- a mild 77°F average July high, a 45°F average December high, and a substantial 56 inches of annual rainfall against only about 4 inches of snow -- a materially different pattern from the three Eastern Washington markets built alongside this record.

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A genuine marine west coast climate

Olympia's climate is classified as marine west coast/Mediterranean-influenced (Köppen Csb): mild, wet winters and dry, mild summers. July, the warmest month, averages a 77°F high; December, the coldest, averages a 45°F high -- genuinely mild compared to the hot summers and cold winters of Yakima, Walla Walla, and Kennewick, the three Eastern Washington markets built alongside this record.

Real, substantial rainfall -- Western Washington's defining feature

Olympia receives roughly 56 inches of rain per year, with November the wettest month and July the driest -- a genuine, honest lifestyle consideration for movers unaccustomed to consistent gray, wet winters, not a minor footnote.

Minimal snowfall

Olympia sees only about 4 inches of snow per year on average -- a real, minor amount compared to any Eastern Washington market in this build, where genuine winter snow accumulation is the norm.

A real, direct climate contrast with this build's Eastern Washington markets

Yakima, Walla Walla, and Kennewick -- built alongside this record -- carry a genuinely different continental climate: hot, dry summers and cold winters, with meaningfully less annual precipitation but real, seasonal snow. Olympia's marine climate is the opposite pattern: mild temperatures year-round with much more rain and much less snow.

Key takeaways

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Last reviewed: 2026-08-25. Independent research; not financial, tax, or legal advice -- confirm current figures with a local professional before making a decision.