CampsiteSTANDARD NONELECTRIC✓ Reservable

Site Mammoth site #22 — Mammoth Campground (Yellowstone)

Mammoth Campground (Yellowstone) · Montana · Loop A

Campsite Mammoth site #22 at Mammoth Campground (Yellowstone) in Montana. STANDARD NONELECTRIC site. No utility hookups. Maximum 6 people per site. Reservable in advance on Recreation.gov.

← Back to Mammoth Campground (Yellowstone)
44.97603, -110.69347
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5-Day Forecast

Weather at Mammoth Campground (Yellowstone)

Live forecast for the campground. Use it to pack and plan.

Avg High75°F
Avg Low47°F
Peak Rain Chance0%
Humidity29%
UV (avg)5
Today
☁️
Overcast
72°/41°
🌬 8mph
↑ 7:23 AM ↓ 6:59 PM
Sun
☁️
Overcast
78°/49°
🌬 12mph
↑ 7:24 AM ↓ 6:57 PM
Mon
☁️
Overcast
77°/50°
🌬 18mph
↑ 7:26 AM ↓ 6:55 PM
Tue
☀️
Clear
75°/49°
🌬 14mph
↑ 7:27 AM ↓ 6:53 PM
Wed
☁️
Overcast
74°/46°
🌬 13mph
↑ 7:28 AM ↓ 6:51 PM

Forecast data © Open-Meteo. Refreshed every 6 hours. Always check the most recent forecast before heading out.

👔 What to Wear

  • 👕
    Moisture-wicking T-shirt
    Light color, breathable.
  • 🩳
    Lightweight shorts or pants
    Quick-dry preferred — sweat dries fast.
  • 🧢
    Brimmed sun hat
    Better than a cap for back-of-neck protection.
  • 🥾
    Trail runners
    Breathable mesh uppers.
  • 🌡
    Layers for swings
    Daily temp range is wide (47°F low → 75°F high). Pack layers.

🎒 What to Pack

  • 💧
    Water
    Bring at least 1L of water; more in heat.
  • 🍫
    High-energy snacks
    A snack for the trail.
  • 🧴
    Sun protection
    Sunscreen, sunglasses, brimmed hat.
  • 🩹
    First-aid kit
    Blister patches, ibuprofen, tape, antiseptic wipes.
  • 🗺
    Offline map
    Download your route in advance via Gaia, Caltopo, or OSM-based apps.

Recommendations adapt to the current forecast + trail stats. Use them as a starting point — local conditions, your experience, and the time of day you start all matter.

Equipment & Vehicle Limits

Important sizing constraints for your RV, trailer, or tent setup.

Site Length
0
Max Num of Vehicles
3
Driveway Surface
Gravel
Driveway Entry
Pull-through

Capacity & Rules

Max Num of People
6
Min Num of People
1
Pets Allowed
Yes

How Site Mammoth site #22 Compares

  • One of 87 sites at Mammoth Campground (Yellowstone) — 40 of them in the A loop.
  • Pull-through site — no backing up required. 76 of 87 sites here are pull-through.
Other sites in the A loop
Site Mammoth site #67STANDARD NONELECTRIC · ReservableSite Mammoth site #17STANDARD NONELECTRIC · ReservableSite Mammoth site #23STANDARD NONELECTRIC · ReservableSite Mammoth site #68STANDARD NONELECTRIC · ReservableSite Mammoth site #55STANDARD NONELECTRIC · ReservableSite Mammoth site #58STANDARD NONELECTRIC · Reservable

Photos from Mammoth Campground (Yellowstone)

Recreation.gov photos of the campground. Specific site appearance may differ — these show the surrounding area and amenities.

Mammoth Campground winter roads, looking north
Mammoth Campground winter roads, looking north — NPS Photo
Mammoth Campground Site 70 in winter
Mammoth Campground Site 70 in winter — T. Mathews/NPS
Mammoth campsite 6 under snow
Mammoth campsite 6 under snow — NPS / Neal Herbert
Tents pitched at the Mammoth Campground
Tents pitched at the Mammoth Campground — NPS Photo (Neal Herbert)
Mammoth Campground Site 72 in winter
Mammoth Campground Site 72 in winter — T. Mathews/NPS
A view of junipers and sagebrush behind a yellow tent at campsite 3
A view of junipers and sagebrush behind a yellow tent at campsite 3 — NPS photo
Mammoth Campground winter roads, looking south
Mammoth Campground winter roads, looking south — NPS
Tall junipers frame Mammoth Campground, campsite 58
Tall junipers frame Mammoth Campground, campsite 58 — NPS photo

Permitted Equipment

TentRVPICKUP CAMPERFIFTH WHEELCARAVAN/CAMPER VANTrailerPOP UPVEHICLE

Booking Tips for Site Mammoth site #22

  • Reservation window: Recreation.gov releases bookings up to 6 months ahead — popular sites go in minutes
  • Best time to book: 8am local time on the day the window opens
  • Cancellation: Recreation.gov refund policies apply — check before booking
  • Quiet hours: typically 10pm–6am in federal campgrounds
  • Check-in/out: 10:00 AM / 10:00 AM
  • Pets: allowed (keep on a 6ft leash, never leave unattended)
  • Leave No Trace: pack out all trash, including food scraps

Frequently Asked Questions

Can I reserve campsite Mammoth site #22?

Yes — this site is reservable via Recreation.gov. Reservations open up to 6 months in advance and popular sites go fast.

How many people can stay at site Mammoth site #22?

Maximum occupancy is 6 people and 3 vehicles.

What hookups does site Mammoth site #22 have?

This is a dry site — no electric, water, or sewer hookups.

Are pets allowed at site Mammoth site #22?

Yes — pets are allowed. Keep on a 6 ft leash and follow campground rules; some areas require additional restrictions.

What are the check-in / check-out times?

Check-in: 10:00 AM. Check-out: 10:00 AM.