1
Pull-thru
USFSCoronado National Forest · Arizona
Upper Hospital Flat Group Site
Overview Upper Hospital Flat is a great place for groups to escape the summer heat of surrounding deserts and retreat to a scenic meadow in the Pinaleño Mountains of southeastern Arizona.
Sites1first-come
Elev.9,137ft
Comf.Apr-Oct7 months
Max rig40 ft1 pull-thru
Electricnonesites
From Tucson3h07real road time
The honest read
Synthesized from
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
At 9,137 ft, Upper Hospital Flat Group Site has a 7-month comfortable window (Apr-Oct). Winter nights average around 20°F, so the shoulder seasons turn cold fast. All 1 sites are first-come, first-served. No reservations, so arrive early. Of the sites, 1 pull-through, and the longest takes a 40-ft rig. Within about 4 miles: 13 named hiking routes, 6 peaks, lake or river access.
The campground at a glance
01 · CHARACTER
Reads strongest on shade and cool nights. Softest on reservability.
Six axes, each scored relative to every other federal campground in the region: quiet (miles to a major road), cool (elevation), roomy (average site spacing), shade, RV-fit (longest rig), and how reservable it is. All six come from data, nothing hand-tuned.
When to go
02 · CLIMATE
avg highavg lowfrost-freedriest · Apr
Apr-Oct
Comfortable window: nights stay above 35°F, days below 90°F.
71%
Of summer weekend-days are dry.
May 5
Last spring frost; first fall frost Oct 23.
55°F
Average July low. Bring a fleece.
Getting there
03 · ACCESS
01
Tucson
144 mi
3h07
02
Phoenix
196 mi
4h47
03
Flagstaff
330 mi
7h03
By drive time
Routed road time (OSRM). Nearest major highway 9.8 mi away.
Picking your site
04 · 1 SITES
0
Walk-in
0
50-amp
0
Accessible
1
Prime
1
Sites
What's within four miles
05 · TRAILS · PEAKS · WATER
Trails & Peaks
Named hiking routes
13
Trail segments
38
Peaks
6
Viewpoints
1
Water & Access
Lake / river access
yes
To nearest major road
9.8 mi
Method
We synthesize public data layers: RIDB and Recreation.gov facility and site records, Open-Meteo climate normals, OpenStreetMap roads, trails, and water, OSRM drive times, and USGS elevation. We take no bookings, no ads, and no paid placements. Independence is the entire point.