Anderson Mesa

Mountain

A high mesa near Flagstaff that hosts observatory facilities and forest trails; visitors come for astronomy, dark-sky viewing, hiking and winter snowshoe routes.

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In this guide

Anderson Mesa essentials

Address: Angels Landing Trail, Zion National Park, Utah (trailhead at The Grotto/West Rim Trail)
Website: nps.gov
Hours: Trail accessible year-round; Zion National Park open 24 hours (visitor center hours vary)
Admission: Zion National Park entrance fee: US$35 per vehicle (7-day pass). Angels Landing hiking permit required (check NPS for current application and fee).

About Anderson Mesa

Anderson Mesa is a high, flat mesa in Coconino County, Arizona, located southeast of Flagstaff. It is a recognizable topographic plateau used for astronomy and recreation.

The mesa is home to the Anderson Mesa Station of Lowell Observatory, which hosts research telescopes and facilities for optical astronomy. Its elevation and distance from Flagstaff provide darker skies suitable for observing and long-exposure work.

The area lies within Coconino National Forest territory and is roughly 20 kilometers southeast of Flagstaff, accessible by forest roads and used for both scientific work and outdoor recreation.

  • Astronomy: Known for dark skies and active astronomical research, the mesa is a destination for stargazing and scientific observing, with access controlled around observatory operations.

What to See#

  • Anderson Mesa Station: Lowell Observatory’s Anderson Mesa Station, a research outpost sited on the plateau with a number of small to medium research telescopes used for optical astronomy.
When to Go

Best Time to Visit Anderson Mesa

Best in spring and fall for comfortable temperatures and fewer crowds; winter offers solitude but potential closure of exposed sections.

Spring
Mar-May · 8-22°C (46-72°F)
Cool mornings and blooming desert plants make for pleasant hiking; watch for afternoon wind.
Fall
Sep-Nov · 10-24°C (50-75°F)
Stable weather and thinner crowds compared with summer; clear canyon vistas are common.
Winter (with caveat)
Dec-Feb · -2-10°C (28-50°F)
Stark canyon light and empty trails; final chain section may be closed due to ice-check alerts before attempting.

Weather & Climate near Anderson Mesa

Climate

Anderson Mesa's climate is classified as Warm-Summer Continental (Dry Summer) - Warm-Summer Continental (Dry Summer) climate with mild summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -10°C to 29°C. Moderate rainfall (520 mm/year).

Air Quality: AQI 18 Good
Temperature & Rainfall
Temperature Range
29°
Warmest Month
-10°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -10° - 5° -6° 50 mm - - 3.1 m/s - -
February - -8° - 8° -4° 51 mm - - 3.4 m/s - -
March - -5° - 11° -1° 56 mm - - 3.7 m/s - -
April - -3° - 15° 3° 25 mm - - 4.1 m/s - -
May - 2° - 20° 11° 19 mm - - 4.1 m/s - -
June - 6° - 26° 16° 10 mm - - 3.9 m/s - -
July - 10° - 29° 20° 67 mm - - 3.3 m/s - -
August - 10° - 27° 19° 72 mm - - 3.0 m/s - -
September - 6° - 24° 15° 48 mm - - 3.1 m/s - -
October - 0° - 19° 8° 37 mm - - 3.2 m/s - -
November - -5° - 12° 0° 42 mm - - 3.2 m/s - -
December - -9° - 6° -5° 43 mm - - 3.0 m/s - -
Getting There & Around

How to Get to Anderson Mesa

The Angels Landing trailhead is accessed from Zion Canyon’s main artery. From Springdale, Utah, take the Zion Canyon Shuttle to The Grotto stop (seasonal service); the West Rim Trailhead begins there. If driving privately to the park, use the main Zion Canyon Scenic Drive (often closed to private vehicles during peak season) and park at the visitor center, then transfer to the shuttle to The Grotto.

Tips for Visiting Anderson Mesa

  • Take the Zion Canyon Shuttle from Springdale; get off at The Grotto (Trailhead) and start early-trail bottlenecks form at Scout Lookout by mid-morning.
  • Bring a headlamp if starting before dawn and sturdy footwear-the final half-mile along the ridge is exposed and uses chains.
  • Check the National Park Service website before heading out: icy conditions can close the chains section and a permit (implemented in 2022) is required to proceed beyond Scout Lookout.