Agassiz Wilderness — a wilderness area in Marshall County, Minnesota — is a lesser-known subject for landscape photographers. The nearest town is Thief River Falls, about 33 km (21 mi) away (Agassiz Wilderness lies NE of town).
Agassiz National Wildlife Refuge is located in northwest Minnesota. Packs of wolves, moose, waterfowl, and 294 species of birds make this refuge a wildlife wonderland. 49 mammal, 12 amphibian, and 9 reptile species have also been identified. The refuge, originally named Mud Lake Migratory Waterfowl Refuge, was established in 1937 primarily for waterfowl production and maintenance. Located in eastern Marshall County, the contiguous 61,500 acres (249 km2) are situated in the aspen parkland region of northwest Minnesota. In 1976, 4,000 acres (16 km2) of the refuge were designated a Wilderness Area. Each year over 20,000 visitors enjoy wildlife viewing on Agassiz Refuge. Agassiz is composed of 37,400 acres (151 km2) of wetlands, 11,650 acres (47 km2) of shrublands, 9,900 acres (40 km2) of forestland, 1,710 acres (7 km2) of grassland, and 150 acres (0.6 km2) of cropland. The Wilderness...From the Wikipedia article “Agassiz National Wildlife Refuge”, licensed under CC BY-SA 4.0.
Sunrise & sunset directions
At Agassiz Wilderness the sunrise point swings a long way through the year: about 52° (NE) at the June solstice and 126° (SE) in late December. Sunset moves from 308° (NW) in June to 235° (SW) in December, and the midday sun climbs to 65° in summer but only 18° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:27 AM | 89° E | 7:36 PM | 271° W | 42° | 12h 09m |
| June solstice (Jun 21) | 5:23 AM | 52° NE | 9:29 PM | 308° NW | 65° | 16h 06m |
| September equinox (Sep 22) | 7:11 AM | 89° E | 7:23 PM | 271° W | 42° | 12h 13m |
| December solstice (Dec 21) | 8:13 AM | 126° SE | 4:32 PM | 235° SW | 18° | 8h 19m |
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
Wilderness areas reward those who camp: being on location at sunrise and in the dark is the main advantage over day visitors.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 7:35 AM | 8:10 AM | 9:02 AM | 4:05 PM | 4:57 PM | 5:32 PM | 8h 46m |
| February | 6:59 AM | 7:32 AM | 8:16 AM | 5:01 PM | 5:46 PM | 6:18 PM | 10h 14m |
| March | 7:07 AM | 7:38 AM | 8:19 AM | 6:48 PM | 7:29 PM | 8:00 PM | 11h 51m |
| April | 6:01 AM | 6:34 AM | 7:16 AM | 7:32 PM | 8:14 PM | 8:47 PM | 13h 40m |
| May | 5:07 AM | 5:44 AM | 6:30 AM | 8:11 PM | 8:57 PM | 9:34 PM | 15h 13m |
| June | 4:41 AM | 5:23 AM | 6:12 AM | 8:38 PM | 9:27 PM | 10:09 PM | 16h 04m |
| July | 4:59 AM | 5:39 AM | 6:26 AM | 8:34 PM | 9:21 PM | 10:01 PM | 15h 42m |
| August | 5:44 AM | 6:18 AM | 7:02 AM | 7:56 PM | 8:40 PM | 9:14 PM | 14h 21m |
| September | 6:30 AM | 7:01 AM | 7:42 AM | 6:57 PM | 7:38 PM | 8:10 PM | 12h 37m |
| October | 7:12 AM | 7:44 AM | 8:27 AM | 5:53 PM | 6:36 PM | 7:08 PM | 10h 52m |
| November | 6:58 AM | 7:32 AM | 8:20 AM | 3:58 PM | 4:46 PM | 5:20 PM | 9h 15m |
| December | 7:32 AM | 8:09 AM | 9:03 AM | 3:36 PM | 4:30 PM | 5:07 PM | 8h 21m |
Local time (America/Chicago), 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 Agassiz Wilderness, the Milky Way core is visible in a dark sky from April through July. May gives the longest window (about 1.0 hours on a moonless night), and the core peaks around 13° 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 | — | -6° | — |
| February | Below 10° in darkness | — | 4° | — |
| March | Below 10° in darkness | — | 9° | — |
| April | 4:01 AM – 4:31 AM | 0.5 | 12° | SSE → SSE |
| May | 2:05 AM – 3:05 AM | 1.0 | 13° | SSE → S |
| June | 12:50 AM – 1:50 AM | 1.0 | 13° | S → S |
| July | 12:11 AM – 1:01 AM | 0.8 | 12° | S → SSW |
| August | 10:47 PM – 11:07 PM | 0.3 | 11° | SSW → SSW |
| September | Below 10° in darkness | — | 9° | — |
| October | Below 10° in darkness | — | 4° | — |
| November | Below 10° in darkness | — | -5° | — |
| 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 ≈ 21.92 mag/arcsec². Aurora needs roughly Kp 3.0+ to show low on the northern horizon here.
Weather & best season
Long-term NASA satellite data for this area show August as the clearest month (about 52% average cloud cover) and November 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 | 40 | 49 | 78 | 83 | 88 | 92 | 100 | 101 | 92 | 84 | 69 | 42 |
| Low °F | -47 | -42 | -35 | 2 | 22 | 35 | 42 | 36 | 24 | 11 | -9 | -40 |
| Precip. (in) | 0.6 | 0.6 | 1.1 | 1.4 | 3.1 | 4.1 | 3.0 | 2.4 | 2.8 | 2.3 | 0.8 | 0.8 |
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 wilderness area
- Motorized and mechanized equipment, including drones, is prohibited in designated wilderness.
- Group size limits and permits may apply; check with the managing agency.
- Practice Leave No Trace — camp on durable surfaces away from lakes and streams.
- Pack weight matters: a single zoom and a light tripod cover most situations.
- Scout in daylight if you plan to shoot at night or before sunrise.
Season: Most high wilderness is snow-free from July to September; lower deserts are best in spring and autumn.
Suggested gear: Lightweight tripod, Spare batteries, Headlamp, Navigation. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Permits, drones & access
Drones: Drones may not take off from or land in federally designated wilderness, where mechanized equipment is prohibited under the Wilderness Act.
Nearby photo spots
Other locations within 40 km of Agassiz Wilderness, closest first.
National Wildlife Refuge
Fire Lookout
Fire LookoutFAQ
When is the best time to photograph Agassiz Wilderness?
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How far is Agassiz Wilderness from Thief River Falls?
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.