Mount Diablo State Park
Mount Diablo State Park in California has 4 climbing routes with bouldering pads, sport, and trad.
- 4 routes
- 5.6 – 5.8-
- Sport · Bouldering · Trad
Best time to visit Mount Diablo State Park
Best months: February–November. 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
54° / 42°
11 wet
Feb
55° / 42°
11 wet
Mar
58° / 43°
10 wet
Apr
62° / 44°
7 wet
May
68° / 49°
4 wet
Jun
76° / 55°
1 wet
Jul
82° / 62°
1 wet
Aug
83° / 61°
0 wet
Sep
80° / 60°
1 wet
Oct
72° / 54°
4 wet
Nov
60° / 46°
7 wet
Dec
53° / 41°
11 wet
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mt Diablo Junction, CA, 0.8 mi away at 2,170 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Mount Diablo State Park is a California state park managed by State Park and Recreation, and it serves as a base for both hiking and climbing. The park's own trails, including the Summit Trail and the Oak Knoll Trail, sit within a short distance of the park's center, and the Diablo Ranch Trail lies about a mile away. Climbers will find Butt Rock, Lower Tier and Middle Tier roughly 1.4 miles off. For comfortable weather, late spring and early fall are the sweet spots. Typical averages from a nearby weather station at Mt Diablo Junction show May highs around 68°F and October highs around 72°F, with only a few wet days in each month. Winter brings highs in the low 50s and about 11 wet days a month. The park's climbing routes are a mix of sport and trad, with two sport routes, So Not Worth It at 5.6 and Glorified Scrambling at 5.8-, and a boulder problem at V0-.
Routes (4)
Chimney Rocks(1)
Roadside Boulder(1)
Sentinel Rock(2)
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