Mountain Peak

Sinister Peak peak

Cascade Range, Washington 8,440 ft
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Range
Cascade Range
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Sinister Peak (8,440+ ft (2,570+ m)) is in Mount Baker-Snoqualmie and Wenatchee National Forests in the U.S. state of Washington. It is situated in Glacier Peak Wilderness and the North Cascades. Not quite 1 mi (1.6 km) east of Dome Peak, Sinister Peak is along a high ridge connecting the two peaks. The Chickamin Glacier is on the north slopes of Sinister Peak while the Garden Glacier is just southeast. Though some of the routes to the summit are technical, it can be reached by a moderate scramble.

For trail conditions and access, search Wikipedia or the local land manager's site. Browse other peaks in the Pacific-Ranges range.

StateWASHINGTON
RangeCascade Range
Elevation8,440 ft
Latitude48.2998°
Longitude-121.0098°
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Regional snowpack

Snowpack near Sinister Peak

Snow water equivalent and snowpack depth at SNOTEL stations near the peak. Best proxy for what's currently sitting on the summit.

Regional streamflow

Streamflow near Sinister Peak

USGS streamgauges in the basin drained by this peak. Spring snowmelt from the summit feeds these flows.

Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day forecast

Daily temperatures, snow, and rain projected over the next two weeks.

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Get Sinister Peak 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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