Jam or Slam Rock
Jam or Slam Rock in California has 5 climbing routes across 4 grades.
- 5 routes
- 5.10c – 5.12b
- Trad · Sport
Is Jam or Slam Rock open right now?
Alert in the area
The National Park Service lists 3 alerts for Joshua Tree National Park.
Partial Trail Closure of West Side Loop
Park alert covering Joshua Tree National Park · NPS · Joshua Tree National Park
Inaccurate Third-Party Apps
Park alert covering Joshua Tree National Park · NPS · Joshua Tree National Park
Oasis of Mara Trail Partial Closure
Park alert covering Joshua Tree National Park · NPS · Joshua Tree National Park
As of · Source: NPS · Joshua Tree National Park. Agencies don't list every closure — check before you go.
Best time to visit Jam or Slam Rock
Best months: October–May. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.
Jan
58° / 38°
4 wet
Feb
61° / 39°
3 wet
Mar
67° / 40°
3 wet
Apr
73° / 46°
2 wet
May
82° / 52°
1 wet
Jun
91° / 59°
0 wet
Jul
96° / 66°
2 wet
Aug
96° / 68°
2 wet
Sep
89° / 60°
2 wet
Oct
80° / 50°
1 wet
Nov
66° / 41°
2 wet
Dec
58° / 34°
4 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Yucca Valley, CA, 14.7 mi away at 3,249 ft. The station sits about 1,000 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Jam or Slam Rock is a climbing area in Joshua Tree National Park in California, managed by the National Park Service. It sits among a cluster of other climbing spots, with several named areas about 0.1 mile away, including Chunky Boulder and Trance Stone, Texas Boulder and Great Burrito. The park charges a fee for visits. Spring and fall are the most comfortable times to go. Typical averages from a nearby weather station in Yucca Valley show April highs around 73°F and October highs around 80°F, while July and August average about 96°F. That station sits roughly 1,000 feet lower than the park's higher ground, so temperatures at the climbing area run cooler. Hidden Valley Trailhead and Cow Rock are both about 0.4 mile away for hiking. Sheep Pass Group campground is about 3.2 miles off.
Routes (5)
Jam or Slam Rock (NE Face)(2)
Jam or Slam Rock (SW Face)(3)
Facts about this crag
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