Tom's Run, Cook Forest State Park, Clarion County, Pennsylvania
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41.3236° N79.1639° WBortle 3New York

Cook Forest State Park Photography Guide

State Park in Jefferson County, Pennsylvania

  • Bortle 3 sky
  • Sunset azimuth 239°–303°
  • Clearest: September
  • Milky Way Mar–Sep
Photo: Nicholas · CC BY 2.0 · source

Cook Forest State Park — a state park in Jefferson County, Pennsylvania — is a rewarding subject for landscape photographers. It sits roughly 16.5 km (10.3 mi) SSW of Marienville.

Cook Forest State Park is a 8,500-acre (3,440 ha) Pennsylvania state park in Farmington Township, Clarion County, Barnett Township, Forest County and Barnett Township, Jefferson County, Pennsylvania in the United States. Located just south of the Allegheny National Forest, the park is a heavily wooded area of rolling hills and mountains along the Clarion River in northwestern Pennsylvania. Cook Forest State Park is known for some of America's finest virgin white pine and hemlock timber stands and was once called the "Black Forest" due to the preponderance of evergreen tree coverage. Cook Forest is now a National Natural Landmark and was rated one of America's top 50 state parks by National Geographic Traveler magazine. It was chosen by the Pennsylvania Department of Conservation and Natural Resources (DCNR) and its Bureau of Parks as one of "25 Must-See Pennsylvania State Parks".From the Wikipedia article “Cook Forest State Park”, licensed under CC BY-SA 4.0.
Nearest town
Marienville
16.5 km (10.3 mi)
Sky darkness
Bortle 3
Rural sky
Clearest month
September
55% cloud
Milky Way peak
June
4.5 h window
Golden hour (Oct)
6:00 PM
sunset 6:37 PM

Light at Cook Forest State Park

Live
Sunrise
7:35 AM
Sunset
6:30 PM
Golden hour AM
7:17 AM – 8:12 AM
Golden hour PM
5:52 PM – 6:47 PM
Blue hour AM
7:06 AM – 7:17 AM
Blue hour PM
6:47 PM – 6:58 PM
Full darkness
8:02 PM – 6:03 AM
Moon
Waxing Gibbous · 70%
Moonrise / set
3:47 PM / 1:28 AM
Day length
10h 55m
Sunrise azimuth
103°
Sunset azimuth
257°
000306091215182124
NightTwilightBlue hourGolden hourDaylight

Times in America/New York. 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 Cook Forest State Park 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.

NESW60°30°
June solsticeEquinoxesDecember solstice
DateSunriseAzimuthSunsetAzimuthNoon sunDaylight
March equinox (Mar 20)7:21 AM90° E7:29 PM271° W49°12h 08m
June solstice (Jun 21)5:44 AM57° ENE8:54 PM303° WNW72°15h 10m
September equinox (Sep 22)7:05 AM89° E7:16 PM271° W49°12h 11m
December solstice (Dec 21)7:40 AM121° ESE4:51 PM239° WSW25°9h 11m

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 startsSunriseGolden hour endsGolden hour startsSunsetBlue hour endsDaylight
January7:10 AM7:41 AM8:24 AM4:30 PM5:12 PM5:43 PM9h 31m
February6:44 AM7:13 AM7:51 AM5:12 PM5:51 PM6:19 PM10h 38m
March7:02 AM7:29 AM8:06 AM6:47 PM7:23 PM7:51 PM11h 54m
April6:09 AM6:38 AM7:15 AM7:20 PM7:57 PM8:25 PM13h 19m
May5:27 AM5:59 AM6:39 AM7:49 PM8:29 PM9:00 PM14h 30m
June5:10 AM5:44 AM6:25 AM8:11 PM8:52 PM9:26 PM15h 09m
July5:24 AM5:57 AM6:38 AM8:09 PM8:49 PM9:22 PM14h 52m
August5:57 AM6:27 AM7:05 AM7:40 PM8:18 PM8:47 PM13h 51m
September6:30 AM6:58 AM7:34 AM6:51 PM7:28 PM7:56 PM12h 30m
October7:01 AM7:29 AM8:06 AM6:00 PM6:37 PM7:05 PM11h 08m
November6:36 AM7:06 AM7:47 AM4:18 PM4:59 PM5:28 PM9h 53m
December7:05 AM7:36 AM8:21 AM4:05 PM4:49 PM5:20 PM9h 13m

Local time (America/New York), 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 Cook Forest State Park, 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 3 (rural sky), good enough for detailed Milky Way images.

MonthCore visible (15th)HoursMax altitudeDirection
JanuaryBelow 10° in darkness—-2°—
February5:34 AM – 5:34 AM0.010°SE → SE
March4:46 AM – 5:56 AM1.217°SE → SSE
April2:46 AM – 4:56 AM2.219°SE → S
May12:43 AM – 4:03 AM3.320°SE → S
June11:01 PM – 3:31 AM4.520°SSE → SSW
July10:51 PM – 2:11 AM3.320°S → SW
August10:02 PM – 12:02 AM2.019°S → SW
September9:02 PM – 10:02 PM1.016°SSW → SW
October8:09 PM – 8:09 PM0.010°SW → SW
NovemberBelow 10° in darkness—-1°—
DecemberBelow 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: 3 Bortle 3 — Rural sky. Some light domes sit on the horizon, but the Milky Way still looks complex overhead. Modeled zenith brightness ≈ 21.61 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 September as the clearest month (about 55% average cloud cover) and December as the cloudiest (84%). 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 (%)

JanFebMarAprMayJunJulAugSepOctNovDec
JanFebMarAprMayJunJulAugSepOctNovDec
High °F606776798691959794877366
Low °F-13-13-2162336444436222-3
Precip. (in)2.82.83.03.53.84.34.13.43.73.83.13.2

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

  • Weekday mornings are the least crowded at popular viewpoints.
  • 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.
  • Check road and trail conditions with the managing agency before you go.

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 Cook Forest State Park, closest first.

Campgrounds nearby (Recreation.gov)

FAQ

When is the best time to photograph Cook Forest State Park?
September 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. Spring wildflowers and autumn color are peak seasons in most parks.
What time is golden hour at Cook Forest State Park?
In October the evening golden hour starts around 6:00 PM and ends after sunset at about 6:37 PM; the morning golden hour lasts until about 8:06 AM. Use the live widget above for exact times on any date.
Where does the sun rise and set at Cook Forest State Park?
Sunrise azimuth ranges from about 57° in June to 121° in December; sunset ranges from 303° to 239°. See the sun-path diagram for the full arc.
Can you see the Milky Way from Cook Forest State Park?
Yes — the core is visible from March to September on moonless nights. The estimated sky quality is Bortle 3 (rural sky).
Do you need a permit to photograph at Cook Forest State Park?
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 Cook Forest State Park from Marienville?
About 16.5 km (10.3 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.