Army Corps of Engineers · Montana
Flat Lake
Army Corps of Engineers · Montana, United States
- Sites
- 8
- Hookups
- 8 no hookups
- Drinking water
- No
- Restrooms
- Yes
- Showers
- No
- Dump station
- No
- Elevation
- 2,257 ft
- Dark sky
- Bortle class 1
- Cell coverage
- Verizon weak · T-Mobile good · AT&T good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Lake
- Fort Peck Project
- Nearest town
- Fort Peck
- Activities
- Boating, Picnic
About
Flat Lake is a primitive U.S. Army Corps of Engineers recreation area on Fort Peck Lake, about 7 miles from Fort Peck, MT by road. Offers 8 campsites with a boat dock/ramp, picnic shelter, and vault toilets; no water, electric hookups, showers, or dump station. Part of Fort Peck Project, Omaha District.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 27° | 11° | -19° | 45° | 11 of 11 |
| February | 31° | 14° | -26° | 51° | 11 of 11 |
| March | 40° | 25° | 3° | 57° | 11 of 11 |
| April | 49° | 34° | 15° | 74° | 9 of 11 |
| May | 62° | 46° | 35° | 82° | 0 of 11 |
| June | 74° | 58° | 50° | 100° | 0 of 11 |
| July | 85° | 66° | 56° | 103° | 0 of 11 |
| August | 83° | 64° | 54° | 96° | 0 of 11 |
| September | 72° | 55° | 43° | 88° | 0 of 11 |
| October | 56° | 42° | 23° | 76° | 2 of 10 |
| November | 45° | 32° | 7° | 58° | 8 of 10 |
| December | 33° | 21° | -3° | 50° | 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
- Downstream (MT) · Army Corps of Engineers · 3 mi · 94 sites
- Floodplain · Army Corps of Engineers · 3 mi · 5 sites
- Roundhouse Point · Army Corps of Engineers · 4 mi · 13 sites
- West End Campground · Army Corps of Engineers · 6 mi
- West End Tent and Trailer Campground · Army Corps of Engineers · 6 mi · 33 sites
All public campgrounds in Montana · Every state and province · Facts read from the operator 2026-08-22. Confirm fees, rules and current status with the operator before you go.