Facility · California ·
Managed by the USDA Forest Service
San Bernardino National Forest (NF) · Open Access
Two trails start at this site: Devils Slide Trail 3E05 and Ernie Maxwell Scenic Trail 3E07. Both trails enter the San Jacinto Wilderness area and bicycles are not allowed. Paved parking and vault toilets at the trailhead. Call the Idyllwild Ranger Station for current conditions: (909) 382-2921. Adventure Pass or a National Parks Pass required; aquire before arriving at Humber Parking Lot.
33.76461, -116.68619 · 33°45'52.6"N 116°41'10.3"W
Typically 86°F in Aug, down to 54°F in Dec.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 55 | 55 | 59 | 64 | 71 | 80 | 85 | 86 | 81 | 72 | 62 | 54 |
| Low °F | 31 | 30 | 32 | 35 | 41 | 48 | 55 | 55 | 50 | 42 | 35 | 30 |
| Precip in | 4.7 | 5.3 | 3.3 | 1.7 | 0.7 | 0.1 | 0.5 | 0.6 | 0.8 | 1.2 | 1.9 | 3.6 |
1991–2020 averages from the nearest NOAA station, 1.3 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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