Three Fingered JackThree Fingered Jack at a Glance
About Three Fingered Jack
Three Fingered Jack is a rugged, eroded volcanic peak in Oregon’s Cascade Range, noted for its jagged spires and steep rock faces. The mountain is a remnant of Pleistocene volcanism and forms a striking silhouette above surrounding forests.
The peak’s steep, rocky summit and cliffs make it a destination for experienced hikers and mountaineers rather than casual walkers; routes involve steep talus, exposed scrambling and variable alpine conditions. The mountain is valued for its geology and wilderness character more than easy tourist facilities.
Three Fingered Jack sits within the Mount Washington Wilderness of the Willamette and Deschutes National Forests in central Oregon, west of the Cascade crest and within driving distance of Highway 20 and Santiam Pass.
- Access and difficulty: The peak sits inside the Mount Washington Wilderness and is primarily accessed via multi-day hikes on rugged trails; scrambling and route-finding skills are commonly required for technical sections.
Best Time to Visit Three Fingered Jack
Late spring through early autumn is best for most visitors; experienced climbers can attempt winter ascents with proper preparation.
Weather & Climate near Three Fingered Jack
Three Fingered Jack's climate is classified as Subarctic (Dry Summer) - Subarctic (Dry Summer) climate with cool summers (peaking in August) and freezing winters (coldest in December). Temperatures range from -7°C to 19°C. Heavy rainfall (2073 mm/year), wettest in December.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | -7° - 1° | -8° | 317 mm | - | - | 4.1 m/s | - | - |
| February | - | -7° - 2° | -7° | 240 mm | - | - | 4.0 m/s | - | - |
| March | - | -7° - 2° | -7° | 217 mm | - | - | 3.9 m/s | - | - |
| April | - | -6° - 4° | -6° | 151 mm | - | - | 3.9 m/s | - | - |
| May | - | -3° - 8° | -2° | 108 mm | - | - | 3.9 m/s | - | - |
| June | - | 0° - 12° | 3° | 87 mm | - | - | 3.9 m/s | - | - |
| July | - | 3° - 18° | 10° | 34 mm | - | - | 3.8 m/s | - | - |
| August | - | 3° - 19° | 11° | 46 mm | - | - | 3.7 m/s | - | - |
| September | - | 2° - 16° | 6° | 83 mm | - | - | 3.7 m/s | - | - |
| October | - | -1° - 11° | 2° | 149 mm | - | - | 3.7 m/s | - | - |
| November | - | -5° - 4° | -5° | 304 mm | - | - | 4.1 m/s | - | - |
| December | - | -7° - 1° | -8° | 337 mm | - | - | 4.1 m/s | - | - |
How to Get to Three Fingered Jack
Access is typically via Forest Service roads off Highway 20 east of Sisters, Oregon. Trailheads such as the Jack Creek area require high-clearance vehicles and involve long approaches; consult Forest Service maps for current road status and trail conditions.
Tips for Visiting Three Fingered Jack
- Access to the summit involves rough volcanic terrain; use established trails and avoid unmarked shortcuts over talus.
- Spring and early summer offer the most stable snow conditions for high routes; winter climbs require avalanche awareness and crampon skills.
- Cell coverage is limited - carry a personal locator beacon or satellite communication if venturing into remote backcountry.