Willamette Pass 7-Day Snow Forecast

Willamette Pass Long-Range Snow Forecast Updated today

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Updated 11 April 2026 22:46 PDT

Long-Range Snow Forecast for Willamette Pass

Long-range (14 to 45 days) from 12 April.

For Forecast detail, see below.

Willamette Pass Snow Forecast Highlights

When will there be fresh snow in Willamette Pass?

Willamette Pass Snow Forecast Highlights - GFS
Snowfall prediction at mid-mountain (5,902ft)
Next Snow Expected	12 April
Next Snow Amount	1in
Next 48 Hours	4in
Next 7 Days	10in

Long-range Snow Outlook for Willamette Pass

Snowfall

Snow Line

Max 41°F
Min 14°F

10in New Snow

Snow Line from 5,410ft to resort level (5,121ft).

Powder Alert!

Powder Alarm issued 12 April 2026 01:43 PDT

Powder Possible :- 9in of Fresh Snow is forecast for Willamette Pass over the next 3 days.

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Willamette Pass Long-Range (2 weeks+) Snow Forecast Outlook

Note :- Mountain weather is extremely dynamic; the forecast below will change. Any forecast snow may move forward or back in the forecast, and predicted snowfall depths will be revised in subsequent updates.

16 Day Weather and Snow Forecast for Willamette Pass from OpenMeteo(GFS)
	Snow and Weather	Temp Town
Sun 12	1in New Snow Light snow showers at altitude, rain showers below. Snow falling to resort level (5,121ft).	Max 41°F Min 31°F
Mon 13	2in New Snow Light snow showers. Snow falling to resort level (5,121ft).	Max 32°F Min 27°F
Tue 14	New Snow Cloudy. Snow Line from 5,410ft to resort level (5,121ft).	Max 40°F Min 21°F
Wed 15	6in New Snow Heavy snow. Snow falling to resort level (5,121ft).	Max 32°F Min 22°F
Thu 16	1in New Snow Light snow showers. Snow falling to resort level (5,121ft).	Max 31°F Min 14°F
Fri 17	Clear sky.	Max 40°F Min 20°F
Sat 18	Cloudy.	Max 40°F Min 24°F

This Snow Forecast for Willamette Pass, United States gives the predicted Snowfall and Freezing Levels for the next week.

The forecast snowfall depths given are the likely average accumulations for the Lower and Upper slopes. The actual snow depth in Willamette Pass, on any given trail or itinerary, may be dramatically different, particularly if the snowfall is accompanied by high winds and/or varying air temperatures.

Snow Forecasts beyond two days ahead are subject to significant change and variable reliability.

Willamette Pass Snow Forecast updated at 22:46 PDT, next update expected 04:00 PDT.

Ensemble forecast for Willamette Pass, USA at 5,121ft

Daily Mean Temperature (yellow line is control)

Daily Total Precipitation (blue line is control)

What are Forecast Ensembles ? Multiple forecasts from running the same weather model with slightly different inputs. The prominent line (the 'control') is the model output from standard inputs, the thinner lines are the variations. Plotted together, they show a range of possible outcomes; the closer they are, the higher the confidence.

How to read Long Range Ensemble Forecasts

These forecasts are from ECMWF EC46, a long-range, low-resolution (area) model. They may not accurately reflect local conditions and should be read as area forecasts, indicating whether the coming weeks are likely to be warmer, colder, wetter, or drier than average.

What to look for?

Temperatures trending downward at the same time as precipitation spikes upward... means snow!

Lines close together indicate a high confidence, while wider spreads signal uncertainty.

United States Hotels Map

Snow Forecast near Willamette Pass

Snow Forecasts for Ski Resorts near Willamette Pass
Ski Area	48 Hr	7 Day	Su	Mo	Tu	We	Th	Fr	Sa
Diamond Peak	-	4in

Snow Reliability

Willamette Pass typically enjoys reliable snowfall, with an average snow depth of 5 to 10 feet throughout the season. For the most current snow conditions, including snowfall updates, check J2Ski for the latest information.

Off-Piste Safety in Willamette Pass

Before skiing or snowboarding off-piste in Willamette Pass, you must assess the local snow conditions. Always check the local Avalanche Risk Level and ski with appropriate safety equipment.