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The Oregon Climate Service reports an average annual precipitation of 1453 mm (57.2 in) across the region, with approximately 115.9 days of measurable precipitation. Notably, it experiences about 17.9 days where rainfall exceeds 1 inch, alongside an average of 57.4 days of thunderstorms. Snowfall averages around 2.5 inches, showcasing a diverse range of precipitation system types, including prefrontal rainbands and convective squall lines. This data provides insights into Oregon's dynamic climate and weather phenomena.
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