Puget Sound lowlands north of Seattle support Marysville's 70,000 residents across flat-to-gently-rolling glaciated terrain. Marine west coast climate means cool summers rarely exceeding 75°F and mild winters averaging 38°F, with annual rainfall near 40 inches. The Snohomish River delta defines western boundaries, while the Cascade Range creates dramatic eastern views. Douglas fir and western red cedar forests remain in undeveloped areas, though much land was cleared for agriculture before suburban development arrived.
