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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scene Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
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Oregon’s weather is a tale of two halves: the damp, mild west side (including Portland and Eugene) and the dry, continental east. For Canadian travellers, the most useful thing to know is that summer (June to September) offers the best balance of warmth and sunshine across the state. The live forecast above provides a detailed Oregon weather 14 day forecast, hourly conditions, and an Oregon weather map for tomorrow.
When should Canadian travellers plan a trip to Oregon?
Late spring through early fall is ideal for most visitors. July and August average highs in Portland hover around 27°C, with low humidity in the Willamette Valley. Eugene, like Portland, benefits from the same Mediterranean-like summer pattern. The coast stays cooler (15–20°C) and can be foggy even in summer. Winter (December through February) brings frequent rain west of the Cascades, but also good skiing at Mount Hood. March and April are transitional, with more showers but fewer crowds.
What to pack for Oregon weather
Layering is essential year-round. A waterproof jacket is non-negotiable for the western half, even in summer when afternoon thundershowers are possible. For eastern Oregon (Bend, Crater Lake), pack sunscreen and a hat for intense sun. In winter, bring warm boots and an ice scraper for car travel. An Vancouver Weather mindset works well: prepare for anything in a day.
Does Oregon get snow?
Yes, but mostly in the Cascade Range (e.g., Government Camp on Mt. Hood) and eastern Oregon. Portland and the Willamette Valley see little snow, typically only a few light dustings each winter that melt quickly.
Is Oregon always rainy?
Only on the west side during winter. Portland receives about 940 mm of rain annually, mostly from November to March. Summers are dry and sunny in the valleys; east of the Cascades is semi-arid with less than 300 mm per year.
What is Oregon weather like in December?
West of the Cascades, expect cool, grey, and rainy conditions with highs around 8–10°C. The mountains are snowy and busy with skiers. Eastern Oregon is cold and dry, with daytime highs near freezing. Always check the Canada weather hub for tips on driving in winter conditions.