Lewis and Clark National Forest, Montana, U.S.
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47.1833° N111.4500° WBortle 2Denver

Lewis and Clark National Forest Photography Guide

National Forest in Cascade County, Montana

  • Bortle 2 sky
  • Sunset azimuth 235°–307°
  • Clearest: July
  • Milky Way Apr–Aug
Photo: U.S. Government · Public domain · source

Located in Cascade County, Montana, Lewis and Clark National Forest is a national forest. The nearest town is Great Falls, about 37 km (23 mi) away (Lewis and Clark National Forest lies SSW of town).

Helena-Lewis and Clark National Forest is located in west-central Montana, United States. Spanning 2.8-million acres. The region was inhabited by various cultures of Native Americans for a period of at least 8,000–10,000 years. When the Lewis and Clark Expedition came to this area, different areas of the large forest territory were used by members of the Blackfeet, Sioux, Cheyenne, Flathead and Crow nations for hunting and as an area for their seasonal winter camps. The forests provided shelter from the winter. The forest lands were defined and established by the federal government in 1897, following its Treaty of 1896 with the Blackfeet forced to cede lands and move to a reservation adjacent to the national forest. The forest is one of the oldest forest preserves in the U.S. The forest is named in honor of the members of the Lewis and Clark Expedition, which passed through the...From the Wikipedia article “Helena-Lewis and Clark National Forest”, licensed under CC BY-SA 4.0.
Nearest town
Great Falls
37 km (23 mi)
Sky darkness
Bortle 2
Typical truly dark site
Clearest month
July
38% cloud
Milky Way peak
June
2.0 h window
Golden hour (Oct)
5:58 PM
sunset 6:40 PM

Light at Lewis and Clark National Forest

Live
Sunrise
7:52 AM
Sunset
6:31 PM
Golden hour AM
7:33 AM – 8:34 AM
Golden hour PM
5:48 PM – 6:50 PM
Blue hour AM
7:21 AM – 7:33 AM
Blue hour PM
6:50 PM – 7:02 PM
Full darkness
8:13 PM – 6:11 AM
Moon
Waxing Gibbous · 71%
Moonrise / set
4:10 PM / 1:28 AM
Day length
10h 39m
Sunrise azimuth
105°
Sunset azimuth
256°
000306091215182124
NightTwilightBlue hourGolden hourDaylight

Times in America/Denver. Golden hour = sun −4° to +6°; blue hour = −6° to −4°.

Clouds at sunrise & sunset

NWS

Hourly sky cover from the National Weather Service. 20–60% cloud often gives the most colorful sunrises and sunsets.

Sunrise & sunset directions

At Lewis and Clark National Forest the sunrise point swings a long way through the year: about 53° (NE) at the June solstice and 125° (SE) in late December. Sunset moves from 307° (NW) in June to 235° (SW) in December, and the midday sun climbs to 66° in summer but only 19° in winter.

NESW60°30°
June solsticeEquinoxesDecember solstice
DateSunriseAzimuthSunsetAzimuthNoon sunDaylight
March equinox (Mar 20)7:30 AM89° E7:39 PM271° W43°12h 09m
June solstice (Jun 21)5:31 AM53° NE9:26 PM307° NW66°15h 55m
September equinox (Sep 22)7:13 AM89° E7:25 PM271° W43°12h 12m
December solstice (Dec 21)8:10 AM125° SE4:39 PM235° SW19°8h 29m

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

Forests suit soft light — overcast days reduce contrast under the canopy, and morning fog adds depth.

Month (15th)Blue hour startsSunriseGolden hour endsGolden hour startsSunsetBlue hour endsDaylight
January7:34 AM8:08 AM8:58 AM4:14 PM5:03 PM5:38 PM8h 55m
February7:00 AM7:32 AM8:15 AM5:07 PM5:50 PM6:22 PM10h 18m
March7:09 AM7:40 AM8:20 AM6:51 PM7:32 PM8:02 PM11h 52m
April6:06 AM6:38 AM7:19 AM7:33 PM8:15 PM8:47 PM13h 36m
May5:14 AM5:51 AM6:35 AM8:11 PM8:55 PM9:32 PM15h 05m
June4:50 AM5:30 AM6:18 AM8:36 PM9:24 PM10:04 PM15h 54m
July5:08 AM5:46 AM6:32 AM8:33 PM9:19 PM9:57 PM15h 33m
August5:50 AM6:23 AM7:06 AM7:57 PM8:39 PM9:12 PM14h 15m
September6:33 AM7:04 AM7:44 AM6:59 PM7:40 PM8:10 PM12h 36m
October7:14 AM7:45 AM8:26 AM5:58 PM6:40 PM7:11 PM10h 55m
November6:57 AM7:31 AM8:18 AM4:05 PM4:52 PM5:25 PM9h 22m
December7:31 AM8:06 AM8:59 AM3:45 PM4:37 PM5:13 PM8h 31m

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 Lewis and Clark National Forest, the Milky Way core is visible in a dark sky from April through August. June gives the longest window (about 2.0 hours on a moonless night), and the core peaks around 14° above the southern horizon. Our light-pollution model puts the sky at about Bortle 2 (typical truly dark site), which is excellent for astrophotography.

MonthCore visible (15th)HoursMax altitudeDirection
JanuaryBelow 10° in darkness—-6°—
FebruaryBelow 10° in darkness—5°—
March5:54 AM – 5:54 AM0.010°SSE → SSE
April3:49 AM – 4:39 AM0.813°SSE → SSE
May1:57 AM – 3:27 AM1.514°SSE → S
June12:24 AM – 2:24 AM2.014°SSE → S
July11:58 PM – 1:18 AM1.314°S → SSW
August10:42 PM – 11:22 PM0.712°SSW → SSW
SeptemberBelow 10° in darkness—10°—
OctoberBelow 10° in darkness—5°—
NovemberBelow 10° in darkness—-4°—
DecemberBelow 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: 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 ≈ 21.85 mag/arcsec². Aurora needs roughly Kp 4.5+ 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 38% average cloud cover) and March as the cloudiest (71%). July is the warmest month and December the coldest, which matters for gear, snow access and how long batteries last at night.

Average cloud cover (%)

JanFebMarAprMayJunJulAugSepOctNovDec
JanFebMarAprMayJunJulAugSepOctNovDec
High °F55597684919810310093866953
Low °F-30-26-25718344240185-12-19
Precip. (in)1.01.11.12.22.63.21.21.31.71.41.01.0

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 national forest

  • Fall color peaks vary by elevation; follow it downhill over several weeks.
  • Dispersed camping is often allowed, which makes sunrise and night shoots easier — check local rules.
  • Forest roads can close in winter or after storms; download offline maps.
  • Fire restrictions may limit campfires and stoves in summer.
  • Shoot RAW to keep the most latitude for high-contrast sunrise and sunset scenes.

Season: Autumn color and spring flowers draw photographers; winter brings snow-covered forests in the North and West.

Suggested gear: Polarizer, Tripod, Offline maps, Insect repellent. Work out exposures with the depth of field, ND filter and NPF rule calculators.

Permits, drones & access

Drones: Recreational drones are generally allowed in national forests outside designated wilderness, subject to FAA rules and temporary flight restrictions — wildfire TFRs are common in summer.

Nearby photo spots

Other locations within 40 km of Lewis and Clark National Forest, closest first.

FAQ

When is the best time to photograph Lewis and Clark National Forest?
July has the clearest skies on average; june is best for the milky way core. For light, plan around the first and last hour of sun. Autumn color and spring flowers draw photographers; winter brings snow-covered forests in the North and West.
What time is golden hour at Lewis and Clark National Forest?
In October the evening golden hour starts around 5:58 PM and ends after sunset at about 6:40 PM; the morning golden hour lasts until about 8:26 AM. Use the live widget above for exact times on any date.
Where does the sun rise and set at Lewis and Clark National Forest?
Sunrise azimuth ranges from about 53° in June to 125° in December; sunset ranges from 307° to 235°. See the sun-path diagram for the full arc.
Can you see the Milky Way from Lewis and Clark National Forest?
Yes — the core is visible from April to August on moonless nights. The estimated sky quality is Bortle 2 (typical truly dark site).
Do you need a permit to photograph at Lewis and Clark National Forest?
Personal photography from public land rarely needs a permit. Commercial shoots, models, large groups and drones may require permission from the land manager — check before you go.
How far is Lewis and Clark National Forest from Great Falls?
About 37 km (23 mi) in a straight line; driving distance is usually longer, especially in mountain terrain.

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.