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MatthewUND CC BY-SA 4.0 Wikimedia Commons

Fort Abraham Lincoln (historical)

Park

At Mandan, Fort Abraham Lincoln State Park interprets a 19th-century military post associated with Custer's 7th Cavalry; reconstructed buildings, exhibits and trails explain military history and local Native American contexts.

Fort Abraham Lincoln (historical) Bismarck, North DakotaFargo, North DakotaMinot, North DakotaGrand Forks, North DakotaDickinson, North DakotaDevils LakeMedoraFort Abraham Lincoln (historical)
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Fort Abraham Lincoln (historical) essentials

Country: United States
Driest months: Dec-Feb
Pay in: Dollar ($)
Language: English

Fort Abraham Lincoln (historical) at a Glance

About Fort Abraham Lincoln (historical)

Fort Abraham Lincoln is a late‑19th‑century U.S. Army post on the Missouri River near present‑day Mandan, North Dakota, notable as the headquarters of Lt. Col. George Armstrong Custer and the 7th Cavalry before the 1876 campaign. The site is interpreted today as a historical park with reconstructions and museum displays.

Interpretive highlights on site include a reconstructed officer’s residence commonly known as the Custer House, a reconstructed Mandan earthlodge village called On‑A‑Slant, and exhibits in the visitor centre that present archaeology and artefacts from the fort. The park offers trails and seasonal living‑history programming.

The post functioned as an active army installation in the late 19th century and its built footprint and archaeological remains inform the reconstructions and displays. The site is maintained for public education and historic interpretation.

Fort Abraham Lincoln sits in central North Dakota beside the Missouri River near Mandan and Bismarck, within the state park that preserves the historic grounds and surrounding riverine landscape.

  • Custer association: Serves as the historical site associated with Lt. Col. George Armstrong Custer and the 7th Cavalry prior to the 1876 campaign against the Sioux and Cheyenne.
  • Reconstructions and programming: The state park preserves both military structures and reconstructions of Native American earthlodges, with trails and living‑history programming seasonally available.

What to See#

  • Custer House reconstruction: A reconstructed officer’s residence known as the Custer House, rebuilt from archaeological evidence to illustrate army domestic life at the post.
  • On‑A‑Slant Mandan village: A reconstructed Mandan earthlodge village known as On‑A‑Slant that interprets the precontact and 19th‑century village life of the Mandan people who lived on the adjacent river plain.
  • Visitor centre and museum: Park visitor centre and museum exhibits that present artefacts, interpretive panels and archaeological finds from the fort and surrounding area.
Things to Do
When to Go

Best Time to Visit Fort Abraham Lincoln (historical)

Summer is best for tours and open facilities; shoulder seasons can be quieter and still pleasant.

Summer
June-August · 15-30°C
Warmest period for outdoor exploration and interpretive programmes.
Spring/Autumn
April-May & September-October · 0-20°C
Cooler and less crowded, but variable weather.

Weather & Climate near Fort Abraham Lincoln (historical)

Climate

Fort Abraham Lincoln (historical)'s climate is classified as Hot-Summer Continental - Hot-Summer Continental climate with warm summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -18°C to 29°C. Semi-arid with limited rainfall.

Air Quality: AQI 24 Good
Temperature & Rainfall
Temperature Range
29°
Warmest Month
-18°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - -18° - -6° -20° 10 mm - - 4.8 m/s - -
February - -14° - -2° -15° 10 mm - - 4.8 m/s - -
March - -8° - 4° -7° 17 mm - - 5.0 m/s - -
April - -1° - 13° 3° 41 mm - - 5.1 m/s - -
May - 6° - 21° 13° 58 mm - - 5.2 m/s - -
June - 12° - 26° 19° 69 mm - - 4.6 m/s - -
July - 14° - 29° 22° 67 mm - - 4.2 m/s - -
August - 13° - 29° 21° 49 mm - - 4.3 m/s - -
September - 8° - 23° 15° 40 mm - - 4.5 m/s - -
October - 1° - 15° 5° 33 mm - - 4.8 m/s - -
November - -7° - 4° -7° 16 mm - - 4.7 m/s - -
December - -15° - -4° -16° 10 mm - - 4.7 m/s - -
Getting There & Around

How to Get to Fort Abraham Lincoln (historical)

Fort Abraham Lincoln State Park is near Mandan, about 10 miles south of Bismarck, North Dakota. It’s accessible by car via US-83/US-1806; signposted access from Mandan and Bismarck. Check the state park’s visitor center for tours and facilities.

Tips for Visiting Fort Abraham Lincoln (historical)

  • Check National Park Service or local historic site information for visiting hours and guided programme availability.
  • Combine a visit with tours focusing on the region's 1870s-1880s military history, including the Mandan missions and the Great Sioux War context.
  • Wear layered clothing; North Dakota weather can change quickly.