Jumbo Peak is a volcanic mountain summit located in the Gifford Pinchot National Forest, in Skamania County of Washington state. It is situated in the Cascade Range, northwest of Mount Adams, east-northeast of Mount Saint Helens, and south of Mount Rainier. Its nearest higher neighbor is Sunrise Peak, to the north-northeast. Precipitation runoff from Jumbo Peak drains into tributaries of the Cowlitz River drainage basin. The Juniper Ridge Trail (#261) which skirts this peak provides access to this remote peak.