National Park Service · Montana
Afterbay Campground
National Park Service · Montana, United States · in Bighorn Canyon National Recreation Area
- Sites
- 22
- Hookups
- 22 electric
- Season
- Year-round
- Drinking water
- Yes
- Restrooms
- Yes
- Showers
- No
- Dump station
- Yes
- Laundry
- No
- Elevation
- 3,196 ft
- Dark sky
- Bortle class 1
- Cell coverage
- T-Mobile none · AT&T none · Verizon none (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Lake
- Bighorn Canyon National Recreation Area
- Nearest town
- Fort Smith
- Address
- P.O. Box 7458, Fort Smith, MT, 59035
- Phone
- (406) 666-2333
Site map
The imagery of the campground. Press and hold the map to drop your own pins and notes; the operator publishes no site points here. Your ratings, notes, pins and photos are kept with the campground on your Saved list, the same list the camping map and the drive page keep.
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About
- Near Fort Smith, Montana
- Open All Year
- 22 RV and tent sites are located on the south shore of Afterbay lake
- All sites have fire rings and picnic tables
- Composting vault toilets
- All sites are back in (not pull through)
- All sites have electric and water
- RV dump station available across the road near the Headquarters building
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 38° | 20° | -21° | 55° | 11 of 11 |
| February | 35° | 16° | -17° | 64° | 11 of 11 |
| March | 47° | 27° | 3° | 74° | 11 of 11 |
| April | 54° | 33° | -2° | 79° | 9 of 11 |
| May | 65° | 44° | 31° | 83° | 1 of 11 |
| June | 76° | 55° | 42° | 103° | 0 of 11 |
| July | 88° | 62° | 52° | 107° | 0 of 11 |
| August | 86° | 62° | 52° | 100° | 0 of 11 |
| September | 77° | 53° | 33° | 92° | 0 of 11 |
| October | 63° | 41° | 23° | 83° | 4 of 10 |
| November | 51° | 32° | -12° | 68° | 8 of 10 |
| December | 40° | 24° | 0° | 59° | 10 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Trails nearby
All 8 trails in Bighorn Canyon National Recreation Area
Trailheads the Park Service and the Forest Service map; each trail's page has its length, climbing and the Service's description.
Nearby campgrounds
- Grapevine Campground · National Park Service · 0 mi · 14 sites
- Black Canyon Campground · National Park Service · 5 mi · 17 sites
- Dayboard 9 Campground · National Park Service · 5 mi · 5 sites
- Medicine Creek Campground · National Park Service · 19 mi · 5 sites
- Barry's Landing & Trail Creek Campground · National Park Service · 20 mi · 30 sites
All public campgrounds in Montana · Every state and province · Facts read from the operator 2026-06-14. Confirm fees, rules and current status with the operator before you go.