Fort Union National Monument in April
April at Fort Union National Monument averages a daytime high near 67°F and an overnight low around 29°F, with about 0.8" of precipitation and roughly 2" of snow. Visitation runs about 1× the park's average month, which makes April an average month here.
- Average low
- 29°F
- Average high
- 67°F
Range across the year: 14°F to 88°F
- Precipitation
- 0.8 in
- Snowfall
- 2 in
- Daylight
- 12.9 hours
Roughly 8% of the park's yearly visitors come in April: about 870 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes April the 8th-busiest of the park's twelve months, sitting between the June peak (1.7×) and the January low (0.3×).
On our Best Time to Visit score April rates 47/100 ("Fair"). Our recommended month is October: the lightest crowds of the park's good-weather months.
The daily average of about 48°F is cool, so layers and a shorter daylight window matter. These figures are 1991–2020 NOAA climate normals from the nearest station, about 8 miles from the park.
Because June, July and August together draw about 37% of annual visitors, choosing April instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 12.9 hours of daylight in April to explore — between the 9.6-hour midwinter low and the 14.4-hour summer high.
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 April may feel a touch quieter than it once did.
How April compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| March | 60°F / 22°F | 1.1× Average | 30 Poor |
| April | 67°F / 29°F | 1.0× Average | 47 Fair |
| May | 75°F / 38°F | 1.3× Busy | 51 Fair |
All twelve months at Fort Union, with the best time to visit.
Frequently Asked Questions
April averages a daytime high near 67°F and an overnight low around 29°F at Fort Union National Monument, with about 0.8 inches of precipitation and roughly 2 inches of snow. 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.
April is average at Fort Union National Monument (about 1.0× the average month). Our best-time score rates it "Fair" at 47/100. Our recommended month is October.
The busiest month is June and the quietest is January. April sits at about 1.0× the park's average, or 8% of annual visitation.
A typical April 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 April
Booking a April trip to Fort Union National Monument? Compare hotels, cabins and vacation rentals near the park with live April availability and prices.
Top-rated places to stay near Fort Union
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See the full ranking of the best national parks to visit in April.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.