Rainbow B
Rainbow B in California has 9 bouldering routes across 6 grades.
- 9 routes
- V1 – V5
- Bouldering
Is Rainbow B open right now?
Alert in the area
The Forest Service lists 2 alerts for Tahoe National Forest.
Stage 1 Fire Restrictions
Agency alert covering Tahoe National Forest · Order 17-26-25 · USFS · Tahoe National Forest
Camping and Campfire Restrictions-Truckee and Sierraville Districts
Agency alert covering Tahoe National Forest · Order 17-25-05 · USFS · Tahoe National Forest
As of · Source: USFS · Tahoe National Forest. Agencies don't list every closure — check before you go.
Best time to visit Rainbow B
Best months: May–October. 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
44° / 25°
Feb
46° / 26°
Mar
51° / 27°
Apr
56° / 30°
May
64° / 37°
Jun
75° / 43°
Jul
82° / 48°
Aug
82° / 47°
Sep
76° / 44°
Oct
65° / 37°
Nov
51° / 30°
Dec
43° / 25°
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Lake Spaulding, CA, 6.6 mi away at 5,156 ft. The station sits about 600 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.
Rainbow B is a bouldering area in California's Tahoe National Forest, within the Yuba River Ranger District. The Forest Service manages the surrounding land. It sits among a cluster of climbing and hiking spots, with Rainbow A and Rainbow C about a tenth of a mile away and the Loch Leven hike just as close. The climbing here is all bouldering, and the route list runs nine problems, from V1 through V5. Several are named, including "Sweeping for Tweakers" at V3 and "Chokey Cheese" at V5. The grades are typical for the area, which is suited to climbers looking for a range of bouldering challenges. Summer is the warmest stretch. Typical averages from a nearby weather station at Lake Spaulding put July and August highs around 82°F with lows in the upper 40s, and the station sits a few hundred feet lower than the boulders, so temperatures at the rock run slightly cooler. Big Bend Campground is about 0.3 miles away, and Hampshire Rocks Campground is roughly 0.8 miles off. The Salmon Lake Tie Trail and paddling on Big Granite Creek are both within a few miles.
Keep exploring — more climbs worth the drive
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