| Mount Pershing | |
| Elevation Ft: | 6154 |
| Prominence Ft: | 1114 |
| Isolation Mi: | 1.53 |
| Isolation Ref: | [1] |
| Parent Peak: | Mount Washington (6,260 ft) |
| Part Type: | Protected area |
| Part: | Mount Skokomish Wilderness |
| Country: | United States |
| State: | Washington |
| Region: | Mason |
| Region Type: | County |
| Range: | Olympic Mountains |
| Etymology: | John J. Pershing |
| Map: | Washington#USA |
| Label Position: | bottom |
| Coordinates: | 47.5521°N -123.256°W |
| Topo: | USGS Mount Skokomish |
| Age: | Eocene |
| First Ascent: | 1939 by Don Dooley, Robert Henderson, Walt Ingalls, and Bob Mandelhorn[2] |
| Easiest Route: | scrambling via South Ridge |
Mount Pershing is a 6154feet massif in Mason County of Washington state, United States.[3] Part of the Olympic Mountains, it is situated in the Mount Skokomish Wilderness on land managed by Olympic National Forest. The mountain's toponym honors General of the Armies John J. Pershing (1860–1948).[4] The nearest higher neighbor is Mount Washington, 1.45miles to the south-southeast. Precipitation runoff from its slopes drains into the Hamma Hamma River.
Mount Pershing is located in the marine west coast climate zone of western North America.[5] Weather fronts originating in the Pacific Ocean travel northeast toward the Olympic Mountains. As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snow. As a result, the Olympics experience high precipitation, especially during the winter months in the form of snowfall.[6] Because of maritime influence, snow tends to be wet and heavy, resulting in avalanche danger. During winter months weather is usually cloudy, but due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.[6] The months May through August offer the most favorable weather for viewing or climbing this mountain.[2]
The Olympic Mountains are composed of obducted clastic wedge material and oceanic crust, primarily Eocene sandstone, turbidite, and basaltic oceanic crust.[7] The mountains were sculpted during the Pleistocene era by erosion and glaciers advancing and retreating multiple times.