Willamette Pass 48-Hour Snow Forecast
Updated 20 September 2026 10:48 BST
2-Day Forecast for Willamette Pass
48-hours from 20 September.
See below for forecast detail
Willamette Pass Snow Forecast updated at 10:48 BST, next update expected imminently.
Forecast for today in Willamette Pass
Max 24℃ 74°F
Min 8℃ 47°F
Valley temperatures from an overnight low of 8℃ 47°F to daytime highs around 24℃ 74°F
Temperature at BaseTemp at Base
Sun
20
Snow unlikely
Clear sky.
Forecast times for Willamette Pass are in Denver (US/Mountain) time zone.
Forecast for tomorrow in Willamette Pass
Max 21℃ 70°F
Min 9℃ 49°F
Valley temperatures from an overnight low of 9℃ 49°F to daytime highs around 21℃ 70°F
Temperature at BaseTemp at Base
Mon
21
Snow unlikely
Clear sky early, then cloudy later.
Forecast times for Willamette Pass are in Denver (US/Mountain) time zone.
48-hour Forecast Detail
| Base | Snow to | Weather | Temp Town | Rain or Snow? | |||
|---|---|---|---|---|---|---|---|
| Sun | 00:00 |  | Clear spells. | 11℃ 52°F | SE Breeze | 0% | |
| Sun | 01:00 | | Fair. | 10℃ 50°F | SE Breeze | 0% | |
| Sun | 02:00 | | Clear sky. | 9℃ 49°F | SE Light | 0% | |
| Sun | 03:00 | | Clear sky. | 10℃ 49°F | SE Breeze | 0% | |
| Sun | 04:00 | | Clear sky. | 9℃ 49°F | SE Light | 0% | |
| Sun | 05:00 | | Clear sky. | 9℃ 48°F | SE Light | 0% | |
| Sun | 06:00 | | Clear sky. | 9℃ 48°F | SE Light | 0% | |
| Sun | 07:00 | | Clear sky. | 9℃ 47°F | SE Light | 0% | |
| Sun | 08:00 | | Clear sky. | 8℃ 47°F | SE Light | 0% | |
| Sun | 09:00 | | Clear sky. | 9℃ 48°F | SE Light | 0% | |
| Sun | 10:00 | | Clear sky. | 13℃ 56°F | SE Light | 0% | |
| Sun | 11:00 | | Clear sky. | 16℃ 61°F | SE Breeze | 0% | |
| Sun | 12:00 | | Clear sky. | 19℃ 65°F | SE Breeze | 0% | |
| Sun | 13:00 | | Clear sky. | 20℃ 69°F | SE Breeze | 0% | |
| Sun | 14:00 | | Clear sky. | 22℃ 71°F | SE Breeze | 0% | |
| Sun | 15:00 | | Clear sky. | 23℃ 73°F | SE Light | 0% | |
| Sun | 16:00 | | Clear sky. | 23℃ 74°F | SE Light | 0% | |
| Sun | 17:00 | | Clear sky. | 24℃ 74°F | SE Light | 0% | |
| Sun | 18:00 | | Clear sky. | 23℃ 74°F | SE Light | 0% | |
| Sun | 19:00 | | Clear sky. | 20℃ 69°F | SE Light | 0% | |
| Sun | 20:00 | | Clear sky. | 17℃ 63°F | SE Light | 0% | |
| Sun | 21:00 | | Fair. | 15℃ 59°F | SE Light | 0% | |
| Sun | 22:00 | | Clear sky. | 14℃ 57°F | SE Light | 0% | |
| Sun | 23:00 | | Clear sky at altitude. Fair below. | 14℃ 57°F | SE Light | 0% | |
| Mon | 00:00 | | Cloudy. | 14℃ 57°F | SW Light | 0% | |
| Mon | 01:00 | | Clear spells. | 14℃ 56°F | SW Light | 0% | |
| Mon | 02:00 | | Clear sky. | 13℃ 55°F | SW Light | 0% | |
| Mon | 03:00 | | Clear sky. | 12℃ 54°F | SW Light | 0% | |
| Mon | 04:00 | | Clear sky. | 12℃ 54°F | SW Light | 0% | |
| Mon | 05:00 | | Clear sky. | 11℃ 52°F | SW Breeze | 0% | |
| Mon | 06:00 | | Clear sky. | 11℃ 52°F | SW Light | 0% | |
| Mon | 07:00 | | Cloudy. | 10℃ 50°F | SW Light | 0% | |
| Mon | 08:00 | | Cloudy. | 10℃ 50°F | SW Light | 0% | |
| Mon | 09:00 | | Cloudy. | 11℃ 52°F | SW Light | 0% | |
| Mon | 10:00 | | Cloudy. | 15℃ 59°F | SW Light | 0% | |
| Mon | 11:00 | | Cloudy. | 18℃ 64°F | SW Light | 0% | |
| Mon | 12:00 | | Cloudy. | 19℃ 67°F | SW Light | 0% | |
| Mon | 13:00 | | Cloudy. | 20℃ 69°F | SW Light | 0% | |
| Mon | 14:00 | | Clear spells at altitude. Fair below. | 21℃ 70°F | SW Light | 0% | |
| Mon | 15:00 | | Clear sky at altitude. Cloud below. | 21℃ 69°F | SW Breeze | 0% | |
| Mon | 16:00 | | Cloudy. | 20℃ 69°F | SW Breeze | 0% | |
| Mon | 17:00 | | Cloudy. | 20℃ 68°F | SW Breeze | 0% | |
| Mon | 18:00 | | Cloudy. | 19℃ 65°F | SW Breeze | 0% | |
| Mon | 19:00 | | Clear sky. | 17℃ 62°F | SW Breeze | 0% | |
| Mon | 20:00 | | Clear sky. | 14℃ 57°F | SW Breeze | 0% | |
| Mon | 21:00 | | Clear sky. | 12℃ 53°F | SW Light | 0% | |
| Mon | 22:00 | | Clear spells. | 10℃ 50°F | SW Light | 0% | |
| Mon | 23:00 | | Cloudy. | 9℃ 49°F | SW Light | 0% | |
Snow Forecast near Willamette Pass
Snow forecasts for nearby ski areas.
| Ski Area | 48 Hr | 7 Day | Su | Mo | Tu | We | Th | Fr | Sa |
|---|---|---|---|---|---|---|---|---|---|
| Diamond Peak | - | 1cm - |
Willamette Pass Snow
For current snow depths and skiing conditions, see our Current Snow Report for Willamette Pass.
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.
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.