Location and surroundings
Big Snow Mountain belongs to the chain North American Cordillera > Pacific Coast Ranges > Cascade Range > South Washington Cascades > Alpine Lakes Wilderness > North-Middle Forks Snoqualmie. It is in the United States, in Washington, and in King County. The mountain rises in a remote alpine setting north of Snoqualmie Pass, with steep slopes, ridges and valleys typical of the western Cascades.
At 2,036 m, it is the highest of the 49 named peaks in North-Middle Forks Snoqualmie and the high point of that range. The surrounding terrain is rugged and heavily shaped by glaciation, with deep drainage lines feeding tributaries of the Snoqualmie and Skykomish Rivers.
Neighbouring peaks
- Mount Price — 1,669 m, 4.7 km SW
- Overcoat Peak — 2,265 m, 6.0 km SE
- Iron Cap Mountain — 1,935 m, 6.5 km E
- Chimney Rock — 2,355 m, 6.6 km SE
- Lemah Mountain — 2,280 m, 6.9 km SE
- Mount Thomson — 1,998 m, 7.0 km S
- Huckleberry Mountain — 1,926 m, 7.1 km S
- Summit Chief Mountain — 2,228 m, 7.4 km E
Big Snow Mountain is lower than several nearby summits, but it is the highest point in its own subrange. The nearest higher peak is Overcoat Peak, 6.0 km to the southeast, which gives a clear sense of the local relief in this part of the Alpine Lakes Wilderness.
The view from the summit
From Big Snow Mountain, the highest peaks within 25 km are part of the same alpine core of the eastern Cascades. To the east are Mount Daniel - West Peak at 2,427 m, 14.3 km away; Mount Hinman at 2,284 m, 12.1 km away; Little Big Chief Mountain at 2,202 m, 8.2 km away; Bears Breast Mountain at 2,194 m, 10.6 km away; The Citadel at 2,171 m, 14.9 km away; and Granite Mountain at 2,147 m, 21.3 km away.
These peaks define the broader skyline around the mountain and show how Big Snow Mountain sits among higher summits while still holding the top position in its own range.
The range
Big Snow Mountain is part of North-Middle Forks Snoqualmie, whose highest peak is Big Snow Mountain itself. The subrange contains 49 named peaks and lies within the United States. In that setting, Big Snow Mountain ranks first by elevation and serves as the high point of the range.
This part of the Cascades is known for steep, broken terrain, glacially carved valleys and granite outcrops. The mountain’s position in the Alpine Lakes Wilderness places it in one of the more rugged sections of the South Washington Cascades.
Climate and weather
Climate estimates from NASA POWER climate data for 2001–2020 put the summit’s warmest month at July, at about 8 °C, and the coldest at December, at about -7 °C. Months with a mean above freezing at the summit are May, June, July, August, September and October. The surrounding area receives about 1,750 mm of precipitation a year, with about 260 mm in January and about 30 mm in July.
The mountain lies in the marine west coast climate zone, so Pacific fronts bring frequent moisture, especially in winter. Snow is often wet and heavy, which increases avalanche danger. Summer is usually more stable and clearer, but weather can still change quickly in the Cascades.
Best time to visit
The most practical window for visiting Big Snow Mountain is usually the warmer part of the year, when the summit is above freezing from May through October. The drier period is centered on July, which is also the driest month in the surrounding area. Even then, snow patches, lingering wet ground and fast-changing weather can remain part of the experience.
For travel in this elevation band, late summer often gives the most settled conditions, while spring and early summer can still bring snow, soft snowpack and avalanche concerns on steeper slopes.
Nature and wildlife
The mountain lies in the Alpine Lakes Wilderness, a region of craggy ridges, deep glacial valleys, granite walls and many lakes. Lower slopes in this part of Washington typically carry dense forest, while higher ground opens into subalpine meadows, rock, snowfields and sparse alpine vegetation. Wildlife in the Cascades can include deer, black bear, mountain goats and a range of birds adapted to mountain terrain.
Because the area is protected wilderness, travel is shaped more by terrain and weather than by built infrastructure. The landscape around Big Snow Mountain is strongly influenced by past glaciation and by the wet maritime climate of western North America.
Guides and organised ascents
For a mountain like Big Snow Mountain, a certified guide is usually most useful for parties that want help with route-finding, snow travel or general alpine decision-making. In the United States, the national mountain guide association is the American Mountain Guides Association, an IFMGA/UIAGM member. The national alpine club is the American Alpine Club. Examples of established guiding companies working in the mountains of the country include RMI Expeditions in Ashford, Washington, and Exum Mountain Guides in Moose, Wyoming.
Permits or climbing registration can apply on some U.S. peaks depending on the land agency, so it is sensible to check the rules for the specific area before setting out. Guided trips in this kind of terrain usually depend on the number of days, group size, snow conditions and equipment needs.
Safety and preparation
Big Snow Mountain is a high, remote Cascade peak where weather, snow and route-finding matter. Wet snow, steep slopes and rapid changes in visibility can make travel more serious than the elevation alone suggests. In winter and shoulder seasons, avalanche awareness is important; in summer, loose rock, lingering snow and long approaches can still demand careful planning.
For mountain rescue in the United States, the emergency number is 911. Dispatchers alert the local search and rescue team, usually run by the county sheriff or a national park service. Carry suitable layers, navigation tools and enough food and water for a full day or longer if conditions slow you down.
History and name
Big Snow Mountain is described as a prominent summit in the Alpine Lakes Wilderness north of Snoqualmie Pass. Its name fits the mountain’s snowy character and its position in a wet Cascade climate where snow can linger well into the season. The surrounding landscape has been shaped over millions of years by tectonic uplift, volcanic activity and repeated glaciation.
The broader Cascade Mountains began forming in the late Eocene, and the Alpine Lakes area was later carved by Pleistocene ice. The last major glacial retreat in the area began about 14,000 years ago, leaving the U-shaped valleys and rugged relief seen today.
Interesting facts
Big Snow Mountain is the highest of 49 named peaks in North-Middle Forks Snoqualmie and the high point of that range. Its nearest higher neighbour is Overcoat Peak, 6.0 km to the southeast. The mountain also sits in a part of the Cascades where several higher summits lie within 25 km, including Mount Daniel - West Peak at 2,427 m.
Precipitation from the mountain drains into tributaries of the Snoqualmie and Skykomish Rivers. That drainage, together with the glacially carved terrain, helps explain the steep valleys and rugged topography around the peak.
FAQ
How high is Big Snow Mountain? It rises to 2,036 m.
Where is Big Snow Mountain? It is in King County, Washington, United States, in the Alpine Lakes Wilderness north of Snoqualmie Pass.
What range is Big Snow Mountain part of? It belongs to North-Middle Forks Snoqualmie, within the Cascade Range.
What is the nearest higher peak? The nearest higher peak is Overcoat Peak, 6.0 km to the southeast.
Is there water on the way to Big Snow Mountain? In this wet Cascade terrain, water is often available from snowmelt and drainage lines, but it should be treated before drinking. Carry about 1.5 to 3 litres for a day, more in warm weather or on a long approach.
When is the best time to go? The summit is usually above freezing from May through October, with the driest month around July. Late summer is often the most settled period.
How is mobile phone coverage? Coverage in the hills is patchy and depends on the operator. On open ridges it may be available, while in valleys and behind ridges it often fails. 112 reaches emergency services over any available network, and maps should be downloaded before you set out.