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)
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.
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.