Cairn Butte
Peak · 7,296 ft · North Sierra corridor
Cairn Butte is a 7,296-foot North Sierra peak offering high-elevation exposure and straightforward alpine access. Wind and crowding remain moderate compared to the basin lakes below.
Afternoon wind dominates the summit and ridges; mornings are calmer. Temperature averages 37 degrees Fahrenheit across rolling 30 days, swinging between 23 and 53 degrees year-round. Expect sustained gusts of 10 mph typical, with peak gusts near 24 mph in spring and winter. Descend by early afternoon.
Over the last 30 days, Cairn Butte averaged a NoGo Score of 35.0 with average wind of 10 mph and average temperature of 37 degrees Fahrenheit. The week ahead will see similar spring conditions: moderate wind, lingering snow above 7,000 feet, and light crowding. Watch for rapid afternoon wind buildup and unstable wet slab potential as the sun strengthens.
30 days back / 7 days forward
Today's score by factor
About Cairn Butte
Cairn Butte rises in the North Sierra corridor between Highway 395 and the granite peaks framing Lassen country. The peak sits east of the main crest, accessible from Highway 395 near Chester or from Forest Service roads branching northeast of Lake Almanor. The standard approach follows trail and cross-country terrain to the summit ridge; elevation gain is moderate but exposure increases sharply above treeline. Spring and early summer snow obscures the route until late May or early June, depending on snowpack. Winter and early spring approaches require avalanche awareness; the terrain northeast of the summit harbors gullies prone to slab failure. Late spring through fall offers straightforward alpine hiking with minimal technical exposure.
Conditions on Cairn Butte track the North Sierra pattern closely. The 30-day average NoGo Score of 35.0 reflects persistent spring wind and residual cool temperatures. Average wind of 10 mph climbs into afternoon thermals by noon, with gusts reaching 24 mph common in April and May. Temperature averages 37 degrees Fahrenheit in the recent rolling window but swings from 23 degrees in winter to 53 degrees in late summer. Crowding remains light year-round at an average of 5.0 visitors recorded in the 30-day window. Snow lingers above 7,200 feet well into June; by July the peak is mostly bare. August and September are the warmest and calmest months, though afternoon wind still ramps. October brings rapid temperature collapse.
Cairn Butte suits experienced hikers and mountaineers comfortable above treeline and with self-rescue capability. The peak rewards early starts; summit by mid-morning before wind and thermals spike. Winter and spring visitors must assess avalanche hazard before committing to the northeast gullies or steep snowfields. Parking at trailheads fills slowly; solitude is typical except in late June and early July. Those seeking alpine views without technical climbing will find the ridge approach rewarding. The peak's moderate elevation and north-facing aspects mean lingering cornices and unstable snow through May in high-snowpack years; consult the SAC avalanche center before trips in winter and spring.
Nearby peaks in the North Sierra corridor offer similar elevation and exposure. Mount Lassen to the south provides a higher profile but more crowds. The Caribou Wilderness to the east holds quieter ridges at comparable altitudes. Visitors combining Cairn Butte with lake recreation should target the smaller alpine lakes draining the summit ridges rather than the larger Highway 395 lake reservoirs; smaller basins see less afternoon wind and lower crowding. Late September to early October offers the most reliable calm window: snow is gone, summer crowds have thinned, and pre-winter wind patterns are weakening.