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WhenToVisitParks

Fort Union National Monument in June

Very busy1.7× average month · best-time score 52/100

June at Fort Union National Monument averages a daytime high near 85°F and an overnight low around 46°F, with about 1.7" of precipitation. Visitation runs about 1.7× the park's average month, which makes June a very busy month here.

Average low
46°F
Average high
85°F

Range across the year: 14°F to 88°F

Crowds
1.7× averageVery busy
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Precipitation
1.7 in
Daylight
14.4 hours

Roughly 14% of the park's yearly visitors come in June: roughly 1,500 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; January, the quietest, runs only about 0.3× the average — a 5-to-1 swing between high and low season.

On our Best Time to Visit score June rates 52/100 ("Fair"). Our recommended month is October: the lightest crowds of the park's good-weather months.

The daily average of about 66°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 8 miles from the park.

June falls inside the park's busiest stretch: June, July and August together pull about 37% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 14.4 hours of daylight in June to explore — near the year-round maximum.

Park-wide, 2024 drew 9,217 recreation visits, down 3.7% from 9,570 in 2023.

Across the past decade overall visitation has eased about 12.5%, so June may feel a touch quieter than it once did.

How June compares with the months around it

MonthAvg high / lowCrowdsBest-time score
May75°F / 38°F1.3× Busy51 Fair
June85°F / 46°F1.7× Very busy52 Fair
July88°F / 52°F1.5× Busy48 Fair

All twelve months at Fort Union, with the best time to visit.

Reviewed by WhenToVisitParks Editorial Team · Updated

Frequently Asked Questions

June averages a daytime high near 85°F and an overnight low around 46°F at Fort Union National Monument, with about 1.7 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 8 miles from the park, so conditions inside the park can differ, especially at other elevations.

June is very busy at Fort Union National Monument (about 1.7× the average month). Our best-time score rates it "Fair" at 52/100. Our recommended month is October.

The busiest month is June and the quietest is January. June sits at about 1.7× the park's average, or 14% of annual visitation.

A typical June sees about 1,000 recreation visits at Fort Union National Monument, based on National Park Service monthly counts from 1979–2025.

Where to stay near Fort Union in June

Booking a June trip to Fort Union National Monument? Compare hotels, cabins and vacation rentals near the park with live June availability and prices.

Top-rated places to stay near Fort Union

Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.

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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.