Three Fingered Jack
Mountain Volcanic peak in Oregon's Cascades, jagged remnant
An eroded shield volcano in Oregon’s Cascade Range, Three Fingered Jack offers rugged ridgelines and technical scrambling; hikers access the peak via trails through dense forests and volcanic rock.
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.
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.
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.
January
January is freezing with highs of 1°C and lows of -7°C. Heavy rain (317 mm).
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February
February is freezing with highs of 2°C and lows of -7°C. Heavy rain (240 mm).
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March
March is freezing with highs of 2°C and lows of -7°C. Heavy rain (217 mm).
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April
April is freezing with highs of 4°C and lows of -6°C. Significant rainfall (151 mm).
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May
May is cold with highs of 8°C and lows of -3°C. Significant rainfall (108 mm).
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June
June is cold with highs of 12°C and lows of 0°C. Regular rainfall (87 mm).
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July
July is cool with highs of 18°C and lows of 3°C. Moderate rainfall (34 mm).
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August
August is cool with highs of 19°C and lows of 3°C. Moderate rainfall (46 mm).
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September
September is cold with highs of 16°C and lows of 2°C. Regular rainfall (83 mm).
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October
October is cold with highs of 11°C and lows of -1°C. Significant rainfall (149 mm).
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November
November is freezing with highs of 4°C and lows of -5°C. Heavy rain (304 mm).
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December
December is the coldest month with highs of 1°C and lows of -7°C. The wettest month with heavy rain (337 mm).
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