Idaho State Arboretum — a botanical garden in Bannock County, Idaho — is a popular subject for landscape photographers. It sits roughly 1.5 km (0.9 mi) SE of Pocatello.
The Idaho State Arboretum is an arboretum located adjacent to the campus of the Idaho State University, Pocatello, Idaho, United States. The arboretum, founded in 1982, is open to the public daily without charge and includes an organized tree walk. In 2025, HGTV called it "the most gorgeous garden in Idaho".From the Wikipedia article “Idaho State Arboretum”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Idaho State Arboretum the sunrise point swings a long way through the year: about 56° (ENE) at the June solstice and 122° (ESE) in late December. Sunset moves from 304° (NW) in June to 238° (WSW) in December, and the midday sun climbs to 71° in summer but only 24° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:34 AM | 90° E | 7:42 PM | 271° W | 47° | 12h 08m |
| June solstice (Jun 21) | 5:52 AM | 56° ENE | 9:13 PM | 304° NW | 71° | 15h 21m |
| September equinox (Sep 22) | 7:18 AM | 89° E | 7:29 PM | 271° W | 47° | 12h 11m |
| December solstice (Dec 21) | 7:58 AM | 122° ESE | 4:59 PM | 238° WSW | 24° | 9h 01m |
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
Gardens are best on bright overcast days or early mornings when dew is fresh and the wind is calm.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:27 AM | 7:58 AM | 8:43 AM | 4:37 PM | 5:21 PM | 5:52 PM | 9h 23m |
| February | 6:59 AM | 7:28 AM | 8:08 AM | 5:22 PM | 6:02 PM | 6:31 PM | 10h 34m |
| March | 7:14 AM | 7:43 AM | 8:20 AM | 6:59 PM | 7:36 PM | 8:05 PM | 11h 54m |
| April | 6:19 AM | 6:49 AM | 7:27 AM | 7:34 PM | 8:12 PM | 8:41 PM | 13h 23m |
| May | 5:35 AM | 6:08 AM | 6:48 AM | 8:05 PM | 8:46 PM | 9:19 PM | 14h 38m |
| June | 5:16 AM | 5:51 AM | 6:34 AM | 8:28 PM | 9:11 PM | 9:46 PM | 15h 19m |
| July | 5:31 AM | 6:05 AM | 6:47 AM | 8:25 PM | 9:07 PM | 9:41 PM | 15h 02m |
| August | 6:06 AM | 6:37 AM | 7:16 AM | 7:54 PM | 8:33 PM | 9:04 PM | 13h 57m |
| September | 6:42 AM | 7:10 AM | 7:48 AM | 7:04 PM | 7:41 PM | 8:10 PM | 12h 31m |
| October | 7:15 AM | 7:44 AM | 8:22 AM | 6:10 PM | 6:49 PM | 7:17 PM | 11h 05m |
| November | 6:52 AM | 7:23 AM | 8:05 AM | 4:25 PM | 5:08 PM | 5:38 PM | 9h 45m |
| December | 7:22 AM | 7:54 AM | 8:40 AM | 4:11 PM | 4:57 PM | 5:29 PM | 9h 03m |
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 Idaho State Arboretum, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 4.0 hours on a moonless night), and the core peaks around 18° above the southern horizon. Our light-pollution model puts the sky at about Bortle 7 (suburban / urban transition), so expect visible sky glow; drive away from towns for better results.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | -3° | — |
| February | Below 10° in darkness | — | 9° | — |
| March | 5:11 AM – 6:01 AM | 0.8 | 15° | SSE → SSE |
| April | 3:14 AM – 5:04 AM | 1.8 | 18° | SSE → S |
| May | 1:16 AM – 4:06 AM | 2.8 | 18° | SSE → S |
| June | 11:27 PM – 3:27 AM | 4.0 | 18° | SSE → SSW |
| July | 11:15 PM – 2:05 AM | 2.8 | 18° | S → SSW |
| August | 10:22 PM – 12:12 AM | 1.8 | 18° | S → SSW |
| September | 9:18 PM – 10:08 PM | 0.8 | 15° | SSW → SSW |
| October | Below 10° in darkness | — | 9° | — |
| November | Below 10° in darkness | — | -2° | — |
| 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: 7 Bortle 7 — Suburban / urban transition. The whole sky has a grey-white glow; the Milky Way is invisible to the eye. Modeled zenith brightness ≈ 18.65 mag/arcsec². Aurora needs roughly Kp 6.5+ 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 35% average cloud cover) and December as the cloudiest (71%). 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 | 52 | 54 | 72 | 82 | 93 | 97 | 102 | 99 | 94 | 84 | 66 | 54 |
| Low °F | -25 | -14 | -4 | 15 | 20 | 30 | 39 | 39 | 25 | 7 | -18 | -23 |
| Precip. (in) | 1.8 | 1.8 | 1.8 | 2.0 | 1.9 | 1.2 | 0.6 | 0.8 | 1.4 | 1.4 | 1.6 | 2.0 |
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 botanical garden
- Many gardens restrict tripods or charge for photography; check the rules before you go.
- Backlit petals glow; position yourself so the sun is behind the flower.
- Seasonal exhibits (orchids, tulips, cherry blossoms) draw crowds — arrive at opening.
- Kaleidoscopic and abstract images are great for flower close-ups — try the online kaleidoscope tool.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Spring bulbs and blossoms, summer perennials and autumn color; glasshouses offer winter subjects.
Suggested gear: Macro lens, Diffuser, Small reflector. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Campgrounds nearby (Recreation.gov)
- Mink Creek Group Site Campground14.8 km (9.2 mi) · reservable
- Scout Mountain Campground19.8 km (12.3 mi) · reservable
- Goodenough Creek Campground26 km (16 mi)
- Big Springs - Caribou30 km (18 mi) · reservable
FAQ
When is the best time to photograph Idaho State Arboretum?
What time is golden hour at Idaho State Arboretum?
Where does the sun rise and set at Idaho State Arboretum?
Can you see the Milky Way from Idaho State Arboretum?
Do you need a permit to photograph at Idaho State Arboretum?
How far is Idaho State Arboretum from Pocatello?
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.