Parks 2,585 ft Bortle 4 Solitude: 70/100 (secluded)

The 21,000-acre Big Horn Mountains Wilderness Area lies 60 miles west of Phoenix in western Maricopa County. The precipitous 1,800-foot-high Big Horn Peak and neighboring desert plain escarpments give the wilderness exceptional scenic value, especially noticeable along Interstate Highway 10 south of the area. The Hummingbird Springs Wilderness , northeast of this area, is separated from the Big Horn Wilderness by a jeep trail. Nine miles of the jumbled Big Horn Mountains ridgeline cross the wilderness. The central mountainous core is surrounded by smaller hills, fissures, chimneys, narrow canyons, and desert plains. This wilderness offers many recreation opportunities such as hiking, backpacking, rock climbing, photography and nature study. Rugged ridges challenge expert climbers, while side canyons and plains offer easier hiking. This wilderness fosters habitat for many desert species, such as the desert bighorn sheep, Gila monster, kit fox and desert tortoise. Golden eagles, prairie falcons, barn owls and great horned owls nest in the cliffs. Know Before You Go Please follow the regulations in place for this area, and use Leave No Trace techniques when visiting to ensure protection of its unique natural and experiential qualities. Motorized equipment and equipment used for mechanical transport are generally prohibited on all federal lands designated as wilderness. This includes the use of motor vehicles (including OHVs), motorboats, bicycles, hang gliders, wagons, carts, portage wheels, and the landing of aircraft including helicopters Contact the agency for more information about regulations. Some lands around and within the wilderness are not federally administered. Please respect the property rights of the owners and do not cross or use these lands without their permission.

Near Tonopah, AZ in Arizona

What to Pack for Big Horn Mountains Wilderness, Maricopa

A well-packed bag handles most of what this area can throw at you.

What you bring to Big Horn Mountains Wilderness matters. This list reflects the actual conditions you'll encounter.

Essential

Water (minimum 2L) — Water sources marked on maps may be seasonal or dry; carrying enough to complete your route prevents a dangerous shortfall.
Navigation (map/GPS/compass) — Getting lost is the leading cause of backcountry search-and-rescue calls; reliable navigation prevents the situation entirely.
Sun protection (sunglasses, sunscreen) — Prolonged sun exposure causes headaches, fatigue, and heat exhaustion that can cut a trip short or create a medical emergency.
First aid kit — Remote locations mean longer response times for help; a first aid kit bridges the gap between injury and professional care.
Extra food — High-energy snacks weigh little but provide crucial fuel if you need to bushwhack out or wait for conditions to improve.
Headlamp with extra batteries — Hands-free light is essential for navigating uneven terrain, setting up camp, or signaling for help at night.
Fire starter — Waterproof matches or a ferro rod weigh almost nothing and can be the difference between a cold night and a survivable one.
Emergency shelter (space blanket) — Wind and rain strip heat faster than most people realize; a compact emergency shelter blocks both.
Knife or multi-tool — A multi-tool handles problems you can't predict: jammed zippers, tangled line, first-aid tape cutting, or gear fixes on the trail.
Extra clothing layer — A lightweight fleece or puffy stuffs small but provides critical insulation if temperatures drop unexpectedly.

Wildlife Gear

Hiking buddy (avoid solo) — A companion can help with first aid, signaling, and decision-making if a wildlife encounter turns serious.
Noise maker — Group noise is especially important in dense brush or near berry patches where bears may be feeding and less alert.
Gaiters — Thick gaiters deflect fangs before they reach skin, buying critical time in areas with rattlesnakes or copperheads.
First-aid snakebite kit — Knowing how to immobilize a limb, mark swelling progression, and avoid harmful folk remedies can improve outcomes.

Terrain Gear

Wide-brim hat — At high elevation where UV is 10-12% stronger per 1,000 feet of gain, a hat provides constant passive protection.
Sunscreen SPF50+ — Sunburn isn't just discomfort — severe burns cause fluid loss, fatigue, and impaired thermoregulation that compound in remote settings.
Extra water (desert) — In arid heat, your body loses 1-2 liters per hour during exertion; running out of water in the desert is life-threatening.

Seasonal Gear

Spring: Camera, Wildflower field guide
Fall: Camera, Binoculars (foliage viewing)

Activities & Best Time to Visit Big Horn Mountains Wilderness, Maricopa

The Desert terrain here lends itself to a range of outdoor activities throughout the year.

From atv, backpacking, birdwatching, the outdoor activities at Big Horn Mountains Wilderness take advantage of the local terrain and climate.

With a photography score of 55/100, Big Horn Mountains Wilderness offers Good dark sky (Bortle 4) and 3 excellent meteor showers worth capturing.

Activities

atv — ATV riding covers varied terrain from sand to forest paths.
backpacking — Backpacking combines endurance, planning, and remote wilderness camping.
birdwatching — Binoculars and field guides help track seasonal migrations and rare sightings.
hiking — Hiking ranges from gentle nature walks to challenging summit climbs.
ice_fishing — Ice fishing requires proper gear and careful attention to ice safety.
ice_skating — Ice skating combines recreation with crisp seasonal air.
mountain_biking — Mountain biking combines speed, balance, and changing landscapes.
off_roading — Off-roading explores remote landscapes beyond paved roads.
photography — Golden hour and dramatic weather can transform ordinary scenes into striking images.
picnicking — Picnicking turns a scenic overlook or shady grove into a memorable gathering spot.
rock_climbing — Rock climbing ranges from beginner routes to advanced multi-pitch climbs.
sightseeing — Sightseeing highlights iconic vistas, waterfalls, and unique rock formations.
walking — Walking lets you slow down and notice details — wildflowers, birdsong, shifting light through trees.
wildlife_viewing — Early mornings and dusk offer the best chances to quietly spot native wildlife.

Best months: May, Jun, Jul, Aug, Sep

Terrain: Desert — Cacti, shrubs, and drought-tolerant plants dominate arid landscapes.

Wildlife Safety at Big Horn Mountains Wilderness, Maricopa

A few species in this area warrant awareness — here's what to keep in mind.

Understanding the local hazards at Big Horn Mountains Wilderness starts with knowing what's here: venomous snakes.

Danger rating: 25/100 (based on terrain difficulty, wildlife presence, weather exposure, and remoteness) moderate

Mountain lions
Venomous snakes
Far from city (62mi)

UV risk: extreme (Southern latitude (34N), Desert (exposed))

Photo score: 55/100

Good dark sky (Bortle 4)
3 excellent meteor showers
Fall foliage
Spring wildflowers

Venomous Snakes

Watch your step — are present in the Desert habitat around Big Horn Mountains Wilderness.

Watch where you step and place hands
Stay on trails
Wear boots and long pants in snake country
Do not reach under rocks or logs
If bitten: stay calm, immobilize limb, seek medical help immediately
Do NOT: cut wound, suck venom, apply tourniquet, ice, or alcohol

Nature & Wildlife at Big Horn Mountains Wilderness, Maricopa

The Desert terrain here supports a rich ecosystem worth noticing as you explore.

Walk quietly and you may spot among the 0 tree species and 3 wildflowers that grow here.

Wildflowers (3)

purple owl's-clover — Upright stems with finely divided leaves.
California poppy — Finely divided blue-green foliage forming low mounds.
Coulter's lupine — Seed pods develop and split when dry.

Shrubs (5)

Creosote Bush — An evergreen desert shrub with small resinous leaves divided into paired leaflets.
Brittlebush — A rounded desert shrub with silvery fuzzy leaves and bright yellow daisy-like flowers.
Eastern Joshua tree — The trunk becomes thick and fibrous with age.

Other Plants (5)

saguaro
Buckhorn Cholla
California Barrel Cactus
ocotillo
Beavertail Pricklypear

Birds (30)

Red-winged Blackbird — Streaked brown female
Rock Pigeon — White or mottled urban color morphs
Gambel's Quail — Black face patch
Mourning Dove — Black wing spots
White-crowned Sparrow — Juvenile with brown crown stripes

Reptiles (13)

Western Diamond-backed Rattlesnake — Black-and-white banded tail ending in a rattle.
Southwestern Speckled Rattlesnake — Camouflages closely with rocky terrain.
Common Side-blotched Lizard — Distinct dark blotch behind the front legs on each side.
Sonoran Desert Tortoise — Front limbs adapted for digging burrows.
Western Patch-nosed Snake — Tan with darker blotches or stripes.

Amphibians (3)

Red-spotted Toad
Lowland Leopard Frog
Arizona Toad

Insects (6)

Large Creosote Gall Midge
California Patch
Noble Scoliid Wasp
Creosote Resin Gall Midge
Western Honey Bee

Other Wildlife (1)

Common Desert Centipede

Nature Bingo at Big Horn Mountains Wilderness, Maricopa

Can you spot them all? Check off each species as you find it on your visit.

Wildlife Challenge

Great Horned Owl (bird)
Western Diamond-backed Rattlesnake (reptile)
Red-spotted Toad (amphibian)
Eastern Joshua tree (plant)

Botany Challenge

Achnatherum Pinetorum
Aquilegia Coerulea Var. Pinetorum
Arabis Holboellii Var. Pinetorum
Asclepias Engelmanniana
Echinocereus Engelmannii
Almutaster

Big Horn Mountains Wilderness, Maricopa Climate & Sun

Use this climate breakdown to plan around the weather.

Climate data for Big Horn Mountains Wilderness shows Arid patterns, averaging 69.7°F year-round.

Climate type: Arid

Annual avg temp: 69.7°F

Annual precipitation: 8 in

With an average annual temperature of 69.7°F and 8 inches of precipitation, Big Horn Mountains Wilderness has warm, arid conditions. Summer highs average around 90°F, while winter lows drop to 52°F.

Best months to visit: Jan, Feb, Mar, Apr, May, Oct, Nov, Dec.

Winter 52°

1.1"

Spring 66°

0.2"

Summer 90°

0.9"

Fall 72°

0.5"

Month	Avg Temp	Precip
Jan	52°F	1.1 in
Feb	54°F	1.2 in
Mar	60°F	0.8 in
Apr	66°F	0.2 in
May	75°F	0.1 in
Jun	84°F	0.1 in
Jul	90°F	0.9 in
Aug	89°F	0.9 in
Sep	83°F	0.8 in
Oct	72°F	0.5 in
Nov	60°F	0.5 in
Dec	51°F	0.9 in

Daylight & Sun Times

Daylight ranges from 9.9 hours in winter to 14.4 hours in summer — a difference of 4.5 hours.

Summer: 4:21 AM – 6:43 PM

Winter: 6:29 AM – 4:25 PM

Winter Solstice: Sunrise 6:29 AM, Sunset 4:25 PM Golden hour from 3:47 PM

Summer Solstice: Sunrise 4:21 AM, Sunset 6:43 PM Golden hour from 6:06 PM

Spring Equinox: Sunrise 5:44 AM, Sunset 5:39 PM Golden hour from 5:06 PM

Fall Equinox: Sunrise 5:14 AM, Sunset 5:40 PM Golden hour from 5:07 PM

Big Horn Mountains Wilderness, Maricopa Trip Planning & Access

With the lay of the land covered, here are the trip planning details.

The closest major city is Phoenix at 62 miles, making this a short road trip destination.

Nearest city: Phoenix (62 mi)

Estimated fuel cost: $15.62 (28 mpg, $3.5/gallon)

Carbon footprint: 50.5 kg CO2 (round trip by car)

Visitor Friendliness

Visitor friendliness: families (excellent), dogs (likely_allowed), elderly (highly_suitable).

Dogs: likely_allowed — No restrictions found
Families: excellent
Elderly: highly_suitable
Strollers: excellent (100/100)
Beginners: Perfect for beginners (Moderate difficulty (+5), Good information available (+5))
Accessibility: Generally accessible to most visitors (90/100)

Stargazing & Night Sky at Big Horn Mountains Wilderness, Maricopa

Don't pack up when the sun goes down — the night sky here has plenty to offer.

The night sky here rates Bortle class 4, meaning Rural/suburban transition conditions for spotting constellations and celestial events.

Bortle 4 Rural/suburban transition

Constellations

Look for Ursa Minor, Cepheus — all visible from this location depending on the season.

Ursa Minor — This compact constellation contains Polaris at the end of its handle, a reliable guide to true north.
Cepheus — Named for a mythological king, this constellation sits beside Cassiopeia and is circumpolar in northern latitudes.

Meteor Showers

For meteor viewing, the Geminids (December 13-14) offers the best show at this location.

Geminids — peaks December 13-14 (excellent)
Cold December air often means clear skies—look overhead after midnight for bright, slow-moving meteors.
Quadrantids — peaks January 3-4 (excellent)
Bundle up—January nights are frigid, but dark skies can produce bright fireballs.
Perseids — peaks August 11-13 (excellent)
Peak activity typically builds after midnight when Perseus climbs higher.
Eta Aquariids — peaks May 5-6 (good)
Southern U.S. observers often get better rates due to the radiant's position.
Delta Aquariids — peaks July 28-29 (fair)
This steady shower rewards patient observers in dark, moonless conditions.

Planets

Planets visible to the naked eye from this location:

Venus — The brightest planet, often called the Morning or Evening Star
Jupiter — The largest planet, bright and steady in the night sky
Saturn — Famous for its rings, visible as a golden steady light
Mars — The Red Planet, recognizable by its reddish-orange hue

Equipment Guide

Naked eye: Venus, Jupiter, Saturn, Mars, Mercury (with care)
Binoculars: Jupiter moons, Uranus, Saturn rings (barely)
Small telescope: Saturn rings, Jupiter bands, Mars surface features, Neptune

Viewing Tips

Check planets rise/set times for your specific date
Planets appear along the ecliptic (zodiac path)
Planets don't twinkle like stars - steady light
Venus and Jupiter are unmistakable - brightest objects after Moon
Use a stargazing app to confirm planet positions
Best viewing: when planet is highest in sky (transit)

Best Viewing Months

Evening: Oct, Nov, Dec, Jan, Feb
Morning: Jul, Aug, Sep

Seasonal Highlights at Big Horn Mountains Wilderness, Maricopa

Different seasons reveal different sides of Big Horn Mountains Wilderness.

The landscape at Big Horn Mountains Wilderness transforms through the year, with 3 notable seasonal events.

Spring Wildflowers

Peak bloom: March - April

Check local park websites for bloom reports

Fall Foliage

Peak color: October 15 – November 5

Best trees for color: Maple, Oak, Aspen

Higher elevations peak 1-2 weeks earlier

Bird Migration

Spring peak: March - April

Fall peak: October - November

Best spots: Wetlands, coastlines, mountain ridges

Big Horn Mountains Wilderness, Maricopa Geology & Natural History

Beyond the trails and wildlife, Big Horn Mountains Wilderness sits within a landscape shaped by millions of years of geological processes. Here's what researchers and surveys have documented about this area.

Bedrock Geology

Rock Type: Late and middle Pleistocene surficial deposits
Lithology: Major:{gravel,sand}, Minor:{silt,clay}
Age: Pleistocene

Mineral Deposits

Deposit Sites: 132
Richness: Exceptional
Minerals Found: Manganese, Gold, Copper, Fluorine-Fluorite, Calcium, Perlite, Barium-Barite, Silver

Endangered Species

Species at Risk: 1478
ESA Endangered: 29
ESA Threatened: 16
Conservation Score: 100/100

Temperature Records

Record High: 124°F (1971-07-10)
Record Low: 9°F (1971-01-07)

Wildfire History

This area has a high wildfire risk. Check current fire conditions before visiting and follow all fire restrictions. Campfires may be banned during dry seasons.

Recorded Fires: 3
Largest Fire: Jackrabbit (2,033.6 acres)
Most Recent: 2024
Fire Risk: High

Watershed

Watershed: Big Horn Peak
Water Quality (Good): 0%
Impaired: 0%

Meteorite Landings

Meteorites Found: 1
Largest: Big Horn Mountains (0.1 kg)

Big Horn Mountains Wilderness, Maricopa Safety & Conditions

For up-to-the-minute safety information, use these official resources.

Live conditions for Big Horn Mountains Wilderness — bookmark these for your trip.

Flood zone: Not in a flood zone

Nearest weather station: BUCKEYE 13.7 W, AZ US (24.19 mi)