0
Pull-thru
USFSCuster Gallatin National Forest · Montana
Porcupine Cabin
Overview Porcupine Cabin sits in the foothills of the Crazy Mountains at an elevation of 6,400 feet.
Sites1all reservable
Elev.6,467ft
Comf.Jun-Sep4 months
Max rigtents
Electricnonesites
From Bozeman2h06real 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 6,467 ft, Porcupine Cabin has a 4-month comfortable window (Jun-Sep). Winter nights average around 15°F, so the shoulder seasons turn cold fast. All 1 sites are reservable in advance, so plan ahead. Popular weekends book out. Within about 4 miles: 5 peaks.
The campground at a glance
01 · CHARACTER
Reads strongest on reservability and quiet. Softest on shade.
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 · Jul
Jun-Sep
Comfortable window: nights stay above 35°F, days below 90°F.
77%
Of summer weekend-days are dry.
Jun 17
Last spring frost; first fall frost Sep 20.
51°F
Average July low. Bring a fleece.
Getting there
03 · ACCESS
01
Bozeman
53 mi
2h06
02
Helena
109 mi
2h59
03
Billings
148 mi
3h25
04
Missoula
224 mi
5h00
By drive time
Routed road time (OSRM). Nearest major highway 11.4 mi away.
Picking your site
04 · 1 SITES
0
Walk-in
0
50-amp
0
Accessible
0
Prime
1
Sites
What's within four miles
05 · TRAILS · PEAKS · WATER
Trails & Peaks
Trail segments
13
Peaks
5
Water & Access
To nearest major road
11.4 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.