Fort Supply is a state park in Uinta County, Wyoming. The nearest town is Mountain View, about 14.0 km (8.7 mi) away (Fort Supply lies SW of town).
Fort Supply was a Mormon pioneer-era fort in Green River County, Utah Territory, United States. Established in 1853 and abandoned during the Utah War of 1857, the fort served to solidify Mormon influence and control in the area, as a base for local missionary efforts, and to supply food and other provisions for pioneers headed to Salt Lake City. The site of the former fort is located near the modern-day community of Robertson, Uinta County, Wyoming, and a monument commemorating the settlement is maintained as a satellite site of Wyoming's Fort Bridger State Historic Site.From the Wikipedia article “Fort Supply (Utah Territory)”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Fort Supply the sunrise point swings a long way through the year: about 57° (ENE) at the June solstice and 121° (ESE) in late December. Sunset moves from 303° (WNW) in June to 239° (WSW) in December, and the midday sun climbs to 72° in summer but only 25° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:26 AM | 90° E | 7:34 PM | 271° W | 49° | 12h 08m |
| June solstice (Jun 21) | 5:50 AM | 57° ENE | 8:59 PM | 303° WNW | 72° | 15h 09m |
| September equinox (Sep 22) | 7:10 AM | 89° E | 7:21 PM | 271° W | 49° | 12h 11m |
| December solstice (Dec 21) | 7:45 AM | 121° ESE | 4:57 PM | 239° WSW | 25° | 9h 12m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
State parks often protect a signature feature — a gorge, lake or overlook — that is best in early morning before visitors and harsh light arrive.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:15 AM | 7:46 AM | 8:28 AM | 4:35 PM | 5:18 PM | 5:48 PM | 9h 32m |
| February | 6:49 AM | 7:17 AM | 7:56 AM | 5:18 PM | 5:56 PM | 6:25 PM | 10h 39m |
| March | 7:07 AM | 7:34 AM | 8:11 AM | 6:52 PM | 7:29 PM | 7:56 PM | 11h 54m |
| April | 6:14 AM | 6:43 AM | 7:20 AM | 7:25 PM | 8:02 PM | 8:30 PM | 13h 19m |
| May | 5:33 AM | 6:04 AM | 6:44 AM | 7:54 PM | 8:34 PM | 9:05 PM | 14h 29m |
| June | 5:16 AM | 5:49 AM | 6:31 AM | 8:15 PM | 8:57 PM | 9:31 PM | 15h 08m |
| July | 5:30 AM | 6:03 AM | 6:43 AM | 8:13 PM | 8:54 PM | 9:27 PM | 14h 51m |
| August | 6:02 AM | 6:32 AM | 7:10 AM | 7:44 PM | 8:22 PM | 8:52 PM | 13h 50m |
| September | 6:35 AM | 7:03 AM | 7:39 AM | 6:56 PM | 7:33 PM | 8:00 PM | 12h 30m |
| October | 7:06 AM | 7:34 AM | 8:11 AM | 6:05 PM | 6:42 PM | 7:10 PM | 11h 08m |
| November | 6:41 AM | 7:11 AM | 7:52 AM | 4:23 PM | 5:04 PM | 5:34 PM | 9h 53m |
| December | 7:10 AM | 7:41 AM | 8:25 AM | 4:11 PM | 4:55 PM | 5:26 PM | 9h 14m |
Local time (America/Denver), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Fort Supply, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 4.5 hours on a moonless night), and the core peaks around 20° above the southern horizon. Our light-pollution model puts the sky at about Bortle 2 (typical truly dark site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -2° | — |
| February | 5:39 AM – 5:39 AM | 0.0 | 10° | SE → SE |
| March | 4:51 AM – 5:51 AM | 1.0 | 16° | SE → SSE |
| April | 2:51 AM – 5:01 AM | 2.2 | 19° | SE → S |
| May | 12:48 AM – 4:08 AM | 3.3 | 20° | SE → S |
| June | 11:06 PM – 3:36 AM | 4.5 | 20° | SSE → SSW |
| July | 10:56 PM – 2:16 AM | 3.3 | 20° | S → SW |
| August | 10:07 PM – 12:07 AM | 2.0 | 19° | S → SW |
| September | 9:07 PM – 10:07 PM | 1.0 | 16° | SSW → SW |
| October | 8:14 PM – 8:14 PM | 0.0 | 10° | SW → SW |
| November | Below 10° in darkness | — | -1° | — |
| December | Below 10° in darkness | — | -19° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 2 Bortle 2 — Typical truly dark site. The summer Milky Way shows rich structure; clouds look like black holes in the stars. Modeled zenith brightness ≈ 21.81 mag/arcsec². Aurora needs roughly Kp 7.0+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show September as the clearest month (about 37% average cloud cover) and December as the cloudiest (70%). July is the warmest month and January the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 51 | 54 | 69 | 76 | 88 | 92 | 97 | 93 | 90 | 78 | 66 | 53 |
| Low °F | -19 | -19 | -9 | 7 | 18 | 26 | 38 | 36 | 22 | 0 | -17 | -22 |
| Precip. (in) | 1.3 | 1.4 | 1.4 | 1.8 | 1.9 | 1.1 | 0.7 | 1.0 | 1.4 | 1.4 | 1.3 | 1.6 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this state park
- Trail maps often mark overlooks — combine them with the sun azimuth to plan.
- Day-use fees or passes are common; buy them online before arriving.
- Check park hours: many state parks close at dusk, which affects sunset and night shooting.
- Ask rangers about photography permits for commercial work, models or drones.
- Bring a spare battery — cold weather and long exposures drain them fast.
Season: Spring wildflowers and autumn color are peak seasons in most parks.
Suggested gear: Versatile zoom lens, Tripod, Park pass. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Drone rules in state parks vary by state and even by park — many require a permit or ban recreational drone flights. Check the park's rules and the FAA B4UFLY app before flying.
Nearby photo spots
Other locations within 40 km of Fort Supply, closest first.
State Park
Ghost Town
State Park
Natural Arch
Mountain PeakCampgrounds nearby (Recreation.gov)
- Deadhorse Trailhead Campground16.0 km (9.9 mi) · reservable
- Dead Horse Campground16.0 km (9.9 mi)
- Stateline Campground Long Term19.8 km (12.3 mi) · reservable
- Stateline19.8 km (12.3 mi) · reservable
- Meeks Cabin Campground22 km (14 mi) · reservable
FAQ
When is the best time to photograph Fort Supply?
What time is golden hour at Fort Supply?
Where does the sun rise and set at Fort Supply?
Can you see the Milky Way from Fort Supply?
Do you need a permit to photograph at Fort Supply?
How far is Fort Supply from Mountain View?
Sources
Location data: Wikidata, Wikipedia. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.