How Crowded Is Fort Union Trading Post in March?
March is a very quiet month at Fort Union Trading Post National Historic Site, running about 0.2× the park's average month — roughly 2% of the year's visitors come in March. That puts it between the June peak and the January low. Overall our best-time score rates March as "Fair" for a visit. Typical March weather averages a high near 42°F and a low around 19°F, with about 0.5" of precipitation and roughly 4.4" of snow. You'll get about 11.6 hours of daylight to explore.
Frequently Asked Questions
March is very quiet at Fort Union Trading Post National Historic Site (about 0.2× the average month). Our best-time score rates it "Fair". The single best month overall is August.
The busiest month is June and the quietest is January. March sits at about 0.2× the park's average, or 2% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.