Mountain · 1 route

Rattlesnake Mountain

6,665 ft · Oregon

Summit
6,665 ft
Routes
1 way up

Route up Rattlesnake Mountain

  1. Rattlesnake Mountain TrailHardFrom Rattlesnake Mountain Trailhead · about 3,641 ft of climbing6.5 mi round tripSee the route
Map of the route up Rattlesnake Mountain, with each route's start numbered and the summit marked
Rattlesnake Mountain Trail · starts at Rattlesnake Mountain TrailheadMap © Mapbox © OpenStreetMap contributors

About Rattlesnake Mountain

Rattlesnake Mountain is a summit in Oregon's Rogue-Umpqua Divide Wilderness, within the Diamond Lake Ranger District of the Umpqua National Forest. The nearest town is Prospect, about 24 miles away. Summer is the most comfortable time to visit. At a nearby weather station at Crater Lake National Park headquarters, July and August typically average highs around 69°F and lows in the low 40s, with only about four wet days each month. Winter there averages highs in the low to mid 30s and rain or snow on 17 to 18 days a month. The closest trails are Windy Gap Trail, less than a mile away, Wiley Camp at about a mile, and the Rogue Umpqua Divide route at roughly 1.4 miles. For an overnight base, Camp Comfort Campground lies about 8.6 miles off.

Forecast on Rattlesnake Mountain

Daily highs and lows, wind and the chance of precipitation at the summit and rattlesnake mountain trailhead for the next 7 days, from the Open-Meteo model.

Questions about Rattlesnake Mountain

How tall is Rattlesnake Mountain?

6,665 ft (2,031 m).

How many routes go to the summit of Rattlesnake Mountain?

One: Rattlesnake Mountain Trail.

Where do the routes up Rattlesnake Mountain start?

Rattlesnake Mountain Trail starts at Rattlesnake Mountain Trailhead.

Mountains nearby

More mountains in Oregon

Facts about this place

When to go

Best time to go: Jul–Sep. The mildest months here, with typical highs of 63–69°F and lows of 37–42°F.

Typical monthly averages (not a forecast) from the Crater Lake Nps Hq, OR weather station, 21 mi away. High / low in °F.

  1. Jan33° high20° low
  2. Feb34° high19° low
  3. Mar36° high20° low
  4. Apr40° high23° low
  5. May49° high29° low
  6. Jun57° high34° low
  7. Jul69° high41° low
  8. Aug69° high42° low
  9. Sep63° high37° low
  10. Oct51° high30° low
  11. Nov38° high23° low
  12. Dec33° high19° low

Source: NOAA NCEI U.S. Climate Normals 1991–2020

Where it is

Nearest town
Prospect, Oregon · 25 mi

Source: Wilderness.net boundaries; USFS EDW boundaries; USGS GNIS populated places

Conditions

Active alerts for Diamond Lake Ranger District as of Oct 9, 2026:

Source: USFS forest alerts

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)

Is Rattlesnake Mountain open right now?

Alert in the area

The Forest Service lists 4 alerts for Umpqua National Forest.

As of · Source: USFS · Umpqua National Forest. Agencies don't list every closure — check before you go.

Best time to visit Rattlesnake Mountain

Best months: June–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    33° / 20°

    18 wet

  2. Feb

    34° / 19°

    17 wet

  3. Mar

    36° / 20°

    18 wet

  4. Apr

    40° / 23°

    16 wet

  5. May

    49° / 29°

    12 wet

  6. Jun

    57° / 34°

    7 wet

  7. Jul

    69° / 41°

    4 wet

  8. Aug

    69° / 42°

    4 wet

  9. Sep

    63° / 37°

    6 wet

  10. Oct

    51° / 30°

    10 wet

  11. Nov

    38° / 23°

    16 wet

  12. Dec

    33° / 19°

    18 wet

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Crater Lake Nps Hq, OR, 20.6 mi away at 6,485 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.