Willamette Pass Snow Report and Forecast
Snow Forecast for Willamette Pass
When will there be fresh snow?
This is the Snow Forecast for Willamette Pass, United States for 15 days from 9 May.
Updated 09 May 2025 08:38 NZST.
| Next Snow Expected | 12 May |
|---|---|
| Next Snow Amount | 2cm |
| Next 48 Hours | 1cm |
| Next 7 Days | 4cm |
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For Forecast detail, see below.
For current snow depths and skiing conditions, see our Current Snow Report for Willamette Pass.
Forecast for today in Willamette Pass
Max 17℃
Min 6℃
Valley temperatures from an overnight low of 6℃ to daytime highs around 17℃
Temperature at BaseTemp at Base
Fri
09
Snow unlikely
Clear sky early, then cloudy later.
Willamette Pass has very light new snow forecast in the next 48 hours.
Willamette Pass Snow Report
| Upper Snow Depths |
| - |
| Lower Snow Depths |
| - |
| Snow Conditions |
| - |
Willamette Pass 7-Day Snow Forecast Overview
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| Fri 09 | Sat 10 | Sun 11 | Mon 12 | Tue 13 | Wed 14 | Thu 15 | |
|---|---|---|---|---|---|---|---|
| Wind | SW F2 | NW F2 | |||||
| 2,037m | 13℃
| 13℃
| 10℃
 +1cm
| 2℃
 +2cm
| 0℃
+1cm
| 6℃
| 10℃
 |
| SW F2 | NW F2 | ||||||
| 1,799m | 15℃
| 14℃
| 12℃
| 4℃
+2cm
| 2℃
+1cm
| 7℃
| 11℃
|
| NW F2 | NW F2 | NW F2 | W F2 | ||||
| 1,561m | 17℃
| 16℃
| 13℃
| 6℃
+1cm
| 5℃
| 9℃
 | 13℃
 |
| Snow Line | varying 1,829m | varying 1,619m | varying 1,689m | ||||
| Max Town | 17℃ | 16℃ | 13℃ | 6℃ | 5℃ | 9℃ | 13℃ |
| Min Town | 6℃ | 6℃ | 3℃ | -1℃ | 0℃ | 1℃ | -1℃ |
This table shows the average forecast snowfall, the maximum temperature, and expected general weather at resort, lower and upper mountain levels. For daily forecast details, see below.
Willamette Pass Medium-Range (7-Day) Snow Forecast Detail
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.
Max 17℃
Min 6℃
Valley temperatures from an overnight low of 6℃ to daytime highs around 17℃
Temperature at BaseTemp at Base
Fri
09
Snow unlikely
Clear sky early, then cloudy later.
Max 16℃
Min 6℃
Valley temperatures from an overnight low of 6℃ to daytime highs around 16℃
Temperature at BaseTemp at Base
Sat
10
Snow unlikely
Cloudy.
Max 13℃
Min 3℃
Valley temperatures from an overnight low of 3℃ to daytime highs around 13℃
Freeze-thaw (spring snow) conditions up high.
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Sun
11
up to 1cm New Snow
Cloudy, light drizzle, clear spells later.
Snow Line from 1,829m to 1,579m, with rain below.
Max 6℃
Min -1℃
Valley temperatures from an overnight low of -1℃ to daytime highs around 6℃
Freeze-thaw (spring snow) from mid-mountain up.
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Mon
12
1cm to 2cm New Snow
Snow showers first, clear spells then snow showers, clear spells later.
Snow Line from 1,619m to resort level.
Max 5℃
Min 0℃
Valley temperatures from an overnight low of 0℃ to daytime highs around 5℃
Freeze-thaw (spring snow) from mid-mountain up.
Temperature at BaseTemp at Base
Snowfall per hour
Snow Line
Tue
13
up to 1cm New Snow
Light snow, snow showers, cloudy later.
Snow Line from 1,689m to resort level.
Max 9℃
Min 1℃
Valley temperatures from an overnight low of 1℃ to daytime highs around 9℃
Freeze-thaw (spring snow) conditions up high.
Temperature at BaseTemp at Base
Wed
14
Snow unlikely
Cloudy, fog, fair later.
Max 13℃
Min -1℃
Freeze-thaw (spring snow) conditions, with valley temperatures cooling to -1℃ and rising to 13℃
Temperature at BaseTemp at Base
Thu
15
Snow unlikely
Clear sky, clear spells, cloudy later.
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 piste 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 08:38 NZST, next update expected imminently.
Snow Forecast near Willamette Pass
| Snow Report and Forecast | 48 Hr | Fri | Sat | Sun | Mon | Tue | Wed | Thu | 7 Day |
|---|---|---|---|---|---|---|---|---|---|
| Diamond Peak | - | 5cm |
Understanding and predicting Snow Conditions in Willamette Pass
Here are our tips for making the most of a trip to Willamette Pass, with the help of the J2Ski Snow forecasts and reports. You can find some great skiing in Willamette Pass, but like any mountain, snow conditions change throughout the season, from day to day, and even from hour to hour.
Whether you’re sticking to the marked pistes or venturing off-piste, here’s what you need to know:
Pistes (Groomers) or Off-Piste
These can be a world apart, regarding snow conditions, even ignoring the difference between the natural terrain features to be found off-piste and the generally controlled surfaces and slopes of a pisted (groomed) run.
- Piste Conditions can range from fresh powder to firm, icy surfaces, particularly after warm spells or a busy day on the mountain with the passage of many skiers.
- Off-Piste Conditions are far more variable. Wind and sun can quickly transform fresh snow into wind crust or slushy layers, whilst cold weather can preserve stashes of powder many days after a snowfall.
WARNING - skiing off-piste (out-of-bounds) at Willamette Pass is not always controlled (slopes made safe from avalanche risk) or patrolled. Always check local advice, ski with safety kit (and know how to use it), and never ski alone.
Analyzing Weather and Snowfall Forecasts
Whilst no forecast can tell you exactly how snow conditions in Willamette Pass will develop, checking the forecast regularly should give you an idea of what to expect.
New snowfall can bring fresh powder and refresh the surfaces of pisted runs. Powder can be tracked out quickly at busy times, but in less crowded and shaded areas, fresh snow can linger for days.
Changes in weather conditions, such as milder temperatures, rain or wind, can degrade snow quality. Conversely, cold, stable weather can preserve conditions for extended periods.
Predicting Future Snow Quality
Regularly check our snow and weather forecasts for Willamette Pass for changes that may affect snow quality. Forecast snowfall depth and recent snowfall are good indicators of what to expect.
Use historical data and recent snow reports to understand past snow conditions and anticipate future changes.