National Park Service · Montana
Grapevine Campground
National Park Service · Montana, United States · in Bighorn Canyon National Recreation Area
- Sites
- 14
- 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
- Phone
- (406) 666-2333
About
- Near Fort Smith, Montana
- Open All Year!
- 14 RV and tent sites are located on the north shore of Afterbay lake
- RV sites are back in (not pull through)
- All sites are handicapped accessible, have fire rings, and picnic tables
- Vault toilets are accessible
- There are no RV hookups
- Trash cans available seasonally (May-Oct)
- RV dump station and drinking water available across Afterbay lake near the Headquarters building and Afterbay Campground
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.
Nearby campgrounds
- Afterbay Campground · National Park Service · 0 mi · 22 sites
- Dayboard 9 Campground · National Park Service · 5 mi · 5 sites
- Black Canyon Campground · National Park Service · 5 mi · 17 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.