Fort Union Trading Post National Historic Site in June
June at Fort Union Trading Post National Historic Site averages a daytime high near 77°F and an overnight low around 51°F, with about 2.8" of precipitation. Visitation runs about 3.6× the park's average month, which makes June a very busy month here.
- Average low
- 51°F
- Average high
- 77°F
Range across the year: 4°F to 85°F
- Precipitation
- 2.8 in
- Daylight
- 15.8 hours
Roughly 30% of the park's yearly visitors come in June: roughly 3,800 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
It is the single busiest month of the year at Fort Union Trading Post; January, the quietest, runs only about 0.1× the average — a 60-to-1 swing between high and low season.
On our Best Time to Visit score June rates 52/100 ("Fair"). Our recommended month is September: the lightest crowds of the park's good-weather months.
The daily average of about 64°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 16.8 miles from the park.
June falls inside the park's busiest stretch: June, July and August together pull about 65% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 15.8 hours of daylight in June to explore — near the year-round maximum.
Park-wide, 2024 drew 12,028 recreation visits, down 7.1% from 12,942 in 2023.
Across the past decade overall visitation has eased about 23.2%, so June may feel a touch quieter than it once did.
How June compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| May | 69°F / 42°F | 1.4× Busy | 68 Good |
| June | 77°F / 51°F | 3.6× Very busy | 52 Fair |
| July | 85°F / 57°F | 2.2× Very busy | 69 Good |
All twelve months at Fort Union Trading Post, with the best time to visit.
Things to do at Fort Union Trading Post in June
The National Park Service tags 4 Fort Union Trading Post activities for summer. Each links to the park's own page for it.
- Visit Fort Union's Trade House · 5-30 minutes
- Become a Jr. Ranger and Jr. Trader at Fort Union · 30-90 minutes
- Tour Fort Union Trading Post · 30-120 minutes
- Watch the Fort Union Trading Post Orientation Film · 9-9 minutes
Frequently Asked Questions
June averages a daytime high near 77°F and an overnight low around 51°F at Fort Union Trading Post National Historic Site, with about 2.8 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 16.8 miles from the park, so conditions inside the park can differ, especially at other elevations.
June is very busy at Fort Union Trading Post National Historic Site (about 3.6× the average month). Our best-time score rates it "Fair" at 52/100. Our recommended month is September.
The busiest month is June and the quietest is January. June sits at about 3.6× the park's average, or 30% of annual visitation.
A typical June sees about 4,000 recreation visits at Fort Union Trading Post National Historic Site, based on National Park Service monthly counts from 1979–2025.
Where to stay near Fort Union Trading Post in June
Booking a June trip to Fort Union Trading Post National Historic Site? Compare hotels, cabins and vacation rentals near the park with live June availability and prices.
Top-rated places to stay near Fort Union Trading Post
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Visiting Fort Union Trading Post in June?
Get crowd forecasts and lodging deals for Fort Union Trading Post by email. No spam, unsubscribe anytime.
See the full ranking of the best national parks to visit in June.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.