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Bureau of Land ManagementBureau of Land Management · Wyoming

Prior Flat Campground

The Prior Flat Campground has 15 campsites and a vault toilet on about 9 acres.
Sites0all reservable
Elev.7,717ft
Comf.Jun-Sep4 months
Max rigtents
Electricnonesites
From Casper2h05real road time
The honest read
Synthesized from
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27

At 7,717 ft, Prior Flat Campground has a 4-month comfortable window (Jun-Sep). Winter nights average around 10°F, so the shoulder seasons turn cold fast. Within about 4 miles: lake or river access.

The campground at a glance

01 · CHARACTER
QuietCoolRoomyShadeRV-fitReserv.

Reads strongest on quiet and cool nights. Softest on cool nights.

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
JFMAMJJASOND
avg highavg lowfrost-freedriest · Jul
Jun-Sep
Comfortable window: nights stay above 35°F, days below 90°F.
90%
Of summer weekend-days are dry.
May 26
Last spring frost; first fall frost Sep 26.
56°F
Average July low. Bring a fleece.

Getting there

03 · ACCESS
01
Casper
73 mi
2h05
02
Cheyenne
151 mi
3h40
03
Jackson
345 mi
7h18
By drive time
Casper · 2h05Cheyenne · 3h40Jackson · 7h18Camp

Routed road time (OSRM). Nearest major highway 15.5 mi away.

What's within four miles

05 · TRAILS · PEAKS · WATER

Trails & Peaks

Water & Access

Lake / river access
yes
To nearest major road
15.5 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.

Check availability on Recreation.gov →