USDA Forest Service · California
Idlehour Campground
USDA Forest Service · California, United States · in San Gabriel Mountains National Monument
- Cost
- No fees are required for this site
- Restrooms
- No
- Elevation
- 2,674 ft
- Dark sky
- Bortle class 5
- Cell coverage
- T-Mobile weak · Verizon weak · AT&T none (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
Season dates aren't confirmed for this campground yet - opening and closing dates haven't been verified. Check the operator's page or call ahead before you plan a trip.
Site map
The imagery of the campground. Press and hold the map to drop your own pins and notes; the operator publishes no site points here. Your ratings, notes, pins and photos are kept with the campground on your Saved list, the same list the camping map and the drive page keep.
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About
US Forest Service campground. 3 hike-in campsites- picnic tables only. No FS provided fire appliances, no toilets, no trash receptacles, no piped water available. No water. Please bring enough water for cooking, cleaning, drinking, and extinguishing campfires. Pack it in - Pack it out! Not reservable through Recreation.gov, so plan on first-come, first-served; check with the ranger district for current conditions and fees.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 60° | 43° | 31° | 83° | 2 of 11 |
| February | 60° | 41° | 27° | 83° | 2 of 11 |
| March | 61° | 44° | 29° | 92° | 2 of 11 |
| April | 69° | 46° | 36° | 87° | 0 of 11 |
| May | 72° | 51° | 41° | 92° | 0 of 11 |
| June | 83° | 57° | 46° | 101° | 0 of 11 |
| July | 89° | 64° | 54° | 98° | 0 of 11 |
| August | 89° | 63° | 56° | 104° | 0 of 11 |
| September | 84° | 60° | 50° | 102° | 0 of 11 |
| October | 79° | 55° | 43° | 95° | 0 of 10 |
| November | 71° | 49° | 37° | 86° | 0 of 10 |
| December | 63° | 43° | 32° | 79° | 1 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Trails nearby
- Mt. Wilson Rd / Eaton Saddle Trailhead · 1.6 mi as the crow flies · Drive there
- Shortcut Saddle Trailhead · 6.0 mi as the crow flies · Drive there
- Strawberry Colby Trailhead · 6.6 mi as the crow flies · Drive there
- Devil's Canyon Trailhead · 9.2 mi as the crow flies
Devils Canyon 2.8 mi Hike · Drive there
All 140 trails in San Gabriel Mountains National Monument · All 205 trails in Angeles National Forest
Trailheads the Park Service and the Forest Service map, within 10 miles as the crow flies; each trail's page has its length, climbing and the Service's description.
Nearby campgrounds
- Mt. Lowe Trail Camp · USDA Forest Service · 2 mi
- Hoegees Campground · USDA Forest Service · 3 mi
- Valley Forge Campground · USDA Forest Service · 3 mi
- Spruce Grove Campground · USDA Forest Service · 3 mi
- West Fork Trail Camp · USDA Forest Service · 3 mi
All public campgrounds in California · Every state and province · Facts read from the operator 2025-07-31. Confirm fees, rules and current status with the operator before you go.