Facility · California ·
Managed by the USDA Forest Service
Sequoia National Forest (NF) · Open Access
The Boole Tree trailhead is approximately 4.2 miles north of Grant Grove Village (east) on Highway 180 to FS Road 13S55. The trail begins at the parking area and heads uphill through a mixed forest of lodgepole, western white, Jeffrey, and sugar pines. At a T-junction, the trail makes its final decent to the sixth largest giant sequoia in the world, the Boole Tree. Distance: 2.25 miles, loop.
36.82210, -118.96050 · 36°49'19.6"N 118°57'37.8"W
Typically 79°F in Jul, down to 46°F in Dec.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 46 | 46 | 48 | 52 | 60 | 71 | 79 | 79 | 73 | 63 | 53 | 46 |
| Low °F | 26 | 25 | 27 | 30 | 38 | 46 | 53 | 52 | 47 | 39 | 32 | 25 |
| Precip in | 8.0 | 7.3 | 7.8 | 3.6 | 1.4 | 0.5 | 0.3 | 0.2 | 0.3 | 2.4 | 3.3 | 6.6 |
1991–2020 averages from the nearest NOAA station, 5.8 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.
Recreation.gov last updated this record on 2026-02-25.
Facility information and photographs from Recreation.gov (RIDB). SpotOpened is not affiliated with Recreation.gov or any federal agency.
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