Mount Si peak
Mount Si rises to 4,167 ft in Pacific-Ranges within the Cascade Range range.
Standing at an elevation of 4,167 feet (1,270 meters), it offers breathtaking panoramic views of the surrounding Cascade Mountains and the Snoqualmie Valley. The mountain is situated within the Mount Si Natural Resources Conservation Area, which encompasses approximately 4,167 acres (1,686 hectares) of diverse ecosystems.
During the winter season, Mount Si receives a significant amount of snowfall. The snowpack range can vary depending on weather conditions, but it generally accumulates from late fall to early spring, providing opportunities for winter sports enthusiasts such as snowshoeing and backcountry skiing. It is advisable to check current snow and weather conditions before planning a winter ascent.
Several creeks and rivers benefit from the runoff generated by Mount Si. The most notable among them is the South Fork Snoqualmie River, which originates from the melting snow and glaciers on the mountain. This river serves as an important water source for nearby communities and supports a variety of aquatic life.
The name "Mount Si" has an interesting history. It is believed to have been derived from the local Snoqualmie tribe's name for the mountain, "Tah-a-ko-kwoy," which means "small mountain." The current name "Mount Si" was given by railroad surveyor, Josiah Merritt, in the late 1800s. The mountain holds significance in local lore and legends, including stories of mythical creatures and supernatural phenomena associated with its unique formation.
In conclusion, Mount Si is a captivating mountain within the Pacific Ranges mountain range. Its impressive elevation, diverse ecosystems, significant snowpack during winter, and contribution to the surrounding creeks and rivers make it a popular destination for outdoor enthusiasts. The mountain's rich history, indigenous name, and intriguing legends add to its allure, making it a must-visit location for those seeking adventure and natural beauty in the Pacific Northwest.
For trail conditions and access, search Wikipedia or the local land manager's site. Browse other peaks in the Pacific-Ranges range.
Snowpack near Mount Si
Snow water equivalent and snowpack depth at SNOTEL stations near the peak. Best proxy for what's currently sitting on the summit.
| SNOTEL station | Snowpack | View |
|---|---|---|
| Olallie Meadows | 7 in | → |
| Burnt Mountain | 2 in | → |
| Cougar Mountain | 1 in | → |
| Lynn Lake | 4 in | → |
| Nohrsc Paradise | 48 in | → |
| Decline Creek Snotel | 2 in | → |
| Morse Lake | 25 in | → |
| Nohrsc Morse Lake | 26 in | → |
| Pigtail Peak | 46 in | → |
| Nohrsc Cougar Mountain | 1 in | → |
| Alpine Meadows | 29 in | → |
| Lynn Lake | 4 in | → |
Streamflow near Mount Si
USGS streamgauges in the basin drained by this peak. Spring snowmelt from the summit feeds these flows.
| Gauge | Streamflow | View |
|---|---|---|
| Taylor Creek Near Selleck | 84 cfs | → |
| Sf Snoqualmie River Ab Alice Creek Near Garcia | 267 cfs | → |
| Mill Creek At Earthworks Park At Kent | 1 cfs | → |
| Rock Creek Near Maple Valley | 2 cfs | → |
| Cedar River Below Diversion Near Landsburg | 318 cfs | → |
| Cedar River At Cedar Falls | 80 cfs | → |
| Cedar River Near Landsburg | 466 cfs | → |
Plan around incoming weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column -- snow at this elevation typically lags the radar signature by a few hours.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
What's around Mount Si
Ski areas, river runs, fishing spots, campgrounds, parks, reservoirs, and boat launches within driving distance of Mount Si.
Ski areas
- Stevens Pass Ski Area
- Ski Callaghan (Whistler Olympic Park)
- Grouse Mountain
- Mount Seymour
- Leavenworth Ski Hill
- Logan Lake Lodge Ski Trails
River runs
- Confluence With Taylor River To Confluence With North Fork Snoqualmie River
- Wagner Bridge To Confluence With Middle Fork Snoqualmie River
- Snoqualmie Falls To Plum's Landing
- Quartz Road To Confluence With Middle Fork Snoqualmie River
- Alpine Lakes Wilderness Boundary To Quartz Creek Road
- Outlet Of Snoqualmie Lake To Alpine Lakes Wilderness Boundary
Get Mount Si on your phone.
Save this peak as a favorite and get push alerts when storms move in, fresh snow falls upstream, or NWS issues a weather warning. Free, account optional.
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Set up an alert
Custom alerts are configured in the Snoflo iOS app. Open the app, navigate to this peak, and tap the bell icon to set thresholds for snowfall, temperature, or wind.