NPS · Arizona

Petrified Forest National Wilderness Area

About 218 million years ago, this area was a vast floodplain crossed by many streams. Tall, stately, pine-like trees grew here, sheltering a myriad of reptiles. When the trees fell, they washed into the water to be buried under silt, mud, and volcanic ash. Groundwater seeped through the logs, bearing silica that later crystallized into quartz, which ultimately petrified the wood. After centuries of burial and upheaval, the land became the high, dry Arizona tableland seen today. While the forces of erosion sculpted the Painted Desert, they also brought the petrified wood slowly to the surface. In 1906, the United States established Petrified Forest National Monument.

Description from Wilderness Connect (wilderness.net).

Official page at Wilderness Connect ↗
Petrified Forest National Wilderness Area
Photo from Wilderness Connect, wilderness.net
DesignationWilderness
Managed byNational Park Service
StateArizona
Size50,260 acres
Designated1970, by Congress
Center point35.11° N, 109.82° W
Night skyVery dark ground, a faint glow at most (Black Marble reading 31)

Boundary map

2 outlines

Boundary, simplified to about 0.005 degrees

The outline is the agency boundary simplified for display, so small parcels and inholdings may not show. The agency page has the authoritative map.

Weather by month

NOAA climate normals →
Weather by month near Petrified Forest National Wilderness Area30°40°50°60°70°80°January: 0.93 inches of precipitation, 0.7 inches of snowFebruary: 0.65 inches of precipitation, 0.1 inches of snowMarch: 0.70 inches of precipitation, 0.2 inches of snowApril: 0.39 inches of precipitation, 0.2 inches of snowMay: 0.46 inches of precipitation, 0.0 inches of snowJune: 0.26 inches of precipitation, 0.0 inches of snowJuly: 1.36 inches of precipitation, 0.0 inches of snowAugust: 1.74 inches of precipitation, 0.0 inches of snowSeptember: 1.12 inches of precipitation, 0.0 inches of snowOctober: 0.96 inches of precipitation, 0.0 inches of snowNovember: 0.62 inches of precipitation, 0.3 inches of snowDecember: 0.76 inches of precipitation, 0.1 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 35.0°F averageFebruary: 38.9°F averageMarch: 45.4°F averageApril: 51.7°F averageMay: 60.6°F averageJune: 70.8°F averageJuly: 75.5°F averageAugust: 73.3°F averageSeptember: 66.6°F averageOctober: 55.2°F averageNovember: 43.1°F averageDecember: 34.0°F average0 in0.5 in1 in1.5 in2 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Painted Desert NP, 4 miles from the center point at 5,760 feet, station USC00026190 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 10 inches a year. The dotted line is average snowfall, about 2 inches a year on the same inches scale.

Large units span more than one climate. The station stands in for the center point, and the outer parts of the boundary can be warmer or colder.

Where to camp

Campsite Atlas →

No federal campground is within ten miles of the boundary in the Campsite Atlas index. Camping inside a wilderness is usually allowed away from trails and water, with no facilities; the managing agency page has the permit and group-size rules.

Explore

Nearby on the other atlases

National Park System units within 30 miles · Park Atlas
National Register listings within 15 miles · 5 in all · Register Atlas

Landmarks are listed first, then by distance from the boundary.

Guidebooks for Arizona

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Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

How big is Petrified Forest National Wilderness Area?

50,260 acres.

Source: Wilderness Connect

Who manages Petrified Forest National Wilderness Area?

The National Park Service.

Source: Wilderness Connect

What state is Petrified Forest National Wilderness Area in?

Arizona.

Source: Wilderness Connect

When was Petrified Forest National Wilderness Area designated?

Congress designated it in 1970.

Source: Wilderness Connect

How do I get to Petrified Forest National Wilderness Area?

A point inside the boundary is at 35.106° N, 109.823° W. Petrified Forest National Park is 5 miles away. The official page carries directions and the office address.

Source: Wilderness Connect

Which national parks are near Petrified Forest National Wilderness Area?

Petrified Forest National Park (5 mi). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near Petrified Forest National Wilderness Area?

The National Register has 5 listings within 15 miles, including Painted Desert Inn and Agate House Pueblo.

Source: Register Atlas

Sources

  • Boundary, name, acreage, designation year, states and description: Wilderness Connect.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Trailheads and sites: the Forest Service Recreation Opportunities layer, points inside the boundary.
  • Night sky: NASA Black Marble (VIIRS, 2016 composite) sampled at zoom 6 around the center point.
  • Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.