Located in Custer County, Idaho, Mount Heyburn is a mountain peak at about 3,082 m (10,112 ft) above sea level. The nearest town is Hailey, about 83 km (52 mi) away (Mount Heyburn lies NW of town).
Mount Heyburn, at 10,229 feet (3,118 m) is one of the many 10,000-foot (3,050 m) peaks in the Sawtooth Range of central Idaho. Mount Heyburn is located in Custer County and within the Sawtooth Wilderness portion of the Sawtooth National Recreation Area. The town of Stanley is located eight miles (13 km) north-northeast of Mount Heyburn. Grand Mogul, 9,733 ft (2,967 m), and Mount Heyburn are the two signature peaks that frame the southwest end of Redfish Lake (6,547 ft (1,996 m)); all are in the Salmon River watershed.From the Wikipedia article “Mount Heyburn”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Mount Heyburn the sunrise point swings a long way through the year: about 56° (NE) at the June solstice and 123° (ESE) in late December. Sunset moves from 305° (NW) in June to 237° (WSW) in December, and the midday sun climbs to 69° in summer but only 22° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:44 AM | 90° E | 7:52 PM | 271° W | 46° | 12h 09m |
| June solstice (Jun 21) | 5:57 AM | 56° NE | 9:27 PM | 305° NW | 69° | 15h 30m |
| September equinox (Sep 22) | 7:28 AM | 89° E | 7:39 PM | 271° W | 46° | 12h 11m |
| December solstice (Dec 21) | 8:13 AM | 123° ESE | 5:05 PM | 237° WSW | 22° | 8h 52m |
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
Summits catch first and last light — alpenglow can turn rock pink or orange minutes before sunrise and after sunset while valleys stay in shadow.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:40 AM | 8:12 AM | 8:58 AM | 4:42 PM | 5:27 PM | 6:00 PM | 9h 15m |
| February | 7:10 AM | 7:40 AM | 8:21 AM | 5:29 PM | 6:10 PM | 6:39 PM | 10h 29m |
| March | 7:24 AM | 7:53 AM | 8:31 AM | 7:08 PM | 7:46 PM | 8:15 PM | 11h 53m |
| April | 6:27 AM | 6:57 AM | 7:36 AM | 7:45 PM | 8:24 PM | 8:54 PM | 13h 27m |
| May | 5:41 AM | 6:14 AM | 6:56 AM | 8:18 PM | 9:00 PM | 9:33 PM | 14h 46m |
| June | 5:20 AM | 5:57 AM | 6:41 AM | 8:41 PM | 9:26 PM | 10:02 PM | 15h 29m |
| July | 5:36 AM | 6:11 AM | 6:54 AM | 8:39 PM | 9:22 PM | 9:57 PM | 15h 10m |
| August | 6:13 AM | 6:44 AM | 7:24 AM | 8:06 PM | 8:46 PM | 9:18 PM | 14h 02m |
| September | 6:51 AM | 7:20 AM | 7:58 AM | 7:14 PM | 7:52 PM | 8:21 PM | 12h 32m |
| October | 7:26 AM | 7:55 AM | 8:34 AM | 6:18 PM | 6:57 PM | 7:27 PM | 11h 02m |
| November | 7:05 AM | 7:36 AM | 8:20 AM | 4:31 PM | 5:15 PM | 5:46 PM | 9h 39m |
| December | 7:36 AM | 8:09 AM | 8:56 AM | 4:15 PM | 5:03 PM | 5:36 PM | 8h 54m |
Local time (America/Boise), 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 Mount Heyburn, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 3.7 hours on a moonless night), and the core peaks around 17° above the southern horizon. Our light-pollution model puts the sky at about Bortle 1 (excellent dark-sky site), which is excellent for astrophotography.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -4° | — |
| February | Below 10° in darkness | — | 8° | — |
| March | 5:33 AM – 6:13 AM | 0.7 | 14° | SSE → SSE |
| April | 3:29 AM – 5:09 AM | 1.7 | 16° | SSE → S |
| May | 1:34 AM – 4:04 AM | 2.5 | 17° | SSE → S |
| June | 11:50 PM – 3:30 AM | 3.7 | 17° | SSE → SSW |
| July | 11:36 PM – 2:06 AM | 2.5 | 17° | S → SSW |
| August | 10:38 PM – 12:08 AM | 1.5 | 16° | S → SSW |
| September | 9:31 PM – 10:01 PM | 0.5 | 13° | SSW → SSW |
| October | Below 10° in darkness | — | 8° | — |
| November | Below 10° in darkness | — | -2° | — |
| December | Below 10° in darkness | — | -20° | — |
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: 1 Bortle 1 — Excellent dark-sky site. The Milky Way casts faint shadows; zodiacal light and airglow are obvious. Modeled zenith brightness ≈ 21.9 mag/arcsec². Aurora needs roughly Kp 6.0+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show July as the clearest month (about 34% average cloud cover) and March 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 | 36 | 46 | 60 | 71 | 82 | 89 | 95 | 91 | 88 | 79 | 63 | 44 |
| Low °F | -28 | -22 | -12 | -5 | 15 | 22 | 31 | 31 | 20 | -3 | -23 | -25 |
| Precip. (in) | 1.9 | 1.8 | 2.0 | 1.8 | 1.9 | 1.7 | 0.7 | 0.7 | 1.2 | 1.4 | 1.8 | 2.4 |
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 mountain peak
- Clouds around the summit add drama — a clear blue sky is often the least interesting condition.
- Photograph the peak from a lake, meadow or ridge at sunrise when the face that looks east lights up first.
- Long lenses compress ridgelines; shoot the peak from several miles away to make it look massive.
- Afternoon thunderstorms are common in summer at high elevations — plan summit hikes for early morning.
- Snow on the summit holds detail best when you expose for the highlights and lift shadows later.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Early summer keeps snow on the peaks with green valleys below; autumn adds aspen or larch color in many ranges.
Suggested gear: Telephoto lens, Lightweight tripod, Warm layers, Microspikes in shoulder seasons. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Mount Heyburn, closest first.
Mountain Peak
Waterfall
Mountain Peak
Mountain Peak
Mountain Peak
Mountain Peak
Mountain PeakWaterfall
Mountain PeakCampgrounds nearby (Recreation.gov)
- Point Campground5.1 km (3.1 mi) · reservable
- Sockeye Campground5.6 km (3.5 mi) · reservable
- Mount Heyburn Campground6.0 km (3.7 mi) · reservable
- Redfish Cabin6.4 km (3.9 mi) · reservable
- North Shore Picnic Area6.6 km (4.1 mi) · reservable
FAQ
When is the best time to photograph Mount Heyburn?
What time is golden hour at Mount Heyburn?
Where does the sun rise and set at Mount Heyburn?
Can you see the Milky Way from Mount Heyburn?
Do you need a permit to photograph at Mount Heyburn?
How far is Mount Heyburn from Hailey?
Sources
Location data: Wikidata, USGS GNIS / GeoNames, 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.