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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the BuzzLayer Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows current conditions for Snoqualmie Pass. Travellers crossing the Cascade Range on I‑90 should expect rapidly changing mountain weather—cool, wet winters with deep snow, and mild, dry summers. Always check recent observations before heading out.
What makes Snoqualmie Pass weather unpredictable?
The pass sits at roughly 921 metres in the Cascades, a zone where Pacific storms pile up moisture. Snowfall can exceed six metres annually, and even a sunny morning can turn into a whiteout by afternoon. The live forecast above, coupled with a snoqualmie pass webcam, gives you the clearest picture of snoqualmie pass conditions in real time.
How does weather affect travel on I‑90?
Snow and ice are the main concerns from November through April. Chain requirements are common, and visibility can drop suddenly. For trip planning, check the snoqualmie pass weather 10‑day and snoqualmie pass weather 14 day outlooks. Hourly updates from the snoqualmie pass weather hourly report help you time your crossing during the calmest part of the day.
Is Snoqualmie Pass always open in winter?
No. The pass closes periodically for avalanche control, severe storms, or crashes. The live forecast above and Washington State DOT alerts give the latest closure information. Check before you drive, especially during heavy snow events.
Where can I see a live webcam of the pass?
The snoqualmie pass webcam is operated by the Washington State Department of Transportation. It updates every few minutes and shows road surface, traffic, and sky conditions. Use it alongside the live forecast above for a full picture.
Should I use the 14‑day or 30‑day forecast for planning?
The snoqualmie pass weather 14 day forecast is more reliable than a 30‑day outlook. For a general idea of long‑term trends, the snoqualmie pass weather 30 day can help, but always confirm with the live forecast above a day before travel.
Sources
For broader mountain conditions across Canada, visit the Canada weather hub or check Vancouver Weather for the drive from the coast. Always carry winter gear when crossing the pass, even in late spring.