Rock Island Lake
- Jun–Aug
- best months
Is Rock Island Lake open right now?
Closure in the area
There's a closure order in Custer Gallatin National Forest. It doesn't name Rock Island Lake, so check the source for the area it covers (14 listed).
NFSR #1700 South Plateau Road Closure
Agency closure covering Custer Gallatin National Forest · USFS · Custer Gallatin National Forest
Tom Miner Campground Closure
Agency closure covering Gardiner Ranger District · Order 01-11-03-26-02 · USFS · Gardiner Ranger District
Hyalite Porcupine Buffalo Horn Summer Interim Travel Order and Map and Order # 01-11-00-26-02
Agency closure covering Custer Gallatin National Forest · Order 01-11-00-26-02 · USFS · Custer Gallatin National Forest
Hyalite Porcupine Buffalo Horn Winter Interim Travel Order and Map Order Number: #01-11-00-26-01
Agency closure covering Custer Gallatin National Forest · USFS · Custer Gallatin National Forest
Glacier Lake Road #2421 Closure Order Number: # 01-11-82-26- 01
Agency closure covering Custer Gallatin National Forest · Order 01-11-82-26- · USFS · Custer Gallatin National Forest
As of · Source: USFS · Custer Gallatin National Forest. Agencies don't list every closure — check before you go.
Rock Island Lake is a 18-acre lake near Cooke City, Montana, at about 8,160 feet. It is managed by the U.S. Forest Service.
Local outfitters
- Flying Pig Adventures44 mi away
Not on Roamze yet. Their page has how to reach them.
Best time to go · Jun–Aug
Best time to visit Rock Island Lake
Best months: June–August. 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.
Jan
27° / 3°
Feb
30° / 5°
Mar
39° / 12°
Apr
44° / 20°
May
55° / 29°
Jun
65° / 35°
Jul
74° / 40°
Aug
73° / 37°
Sep
64° / 30°
Oct
50° / 23°
Nov
33° / 12°
Dec
24° / 2°
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Silver Gate, MT, 7.4 mi away at 7,495 ft. The station sits about 700 ft lower than this place, so expect it a little cooler here. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Keep exploring — more waters worth the drive
SEE
Parkside
~35 min drive
SEE
Beartooth RD
~26 min drive
SEE
West Rosebud Lake Fishing Access
~28 min drive
SEE
Margaret Lake
~1 min drive
Margaret Lake is an 8-acre lake near Cooke City, Montana, at about 8,092 feet. It is managed by the U.S. Forest Service.
SEE
Clarks Fork Boat Launch
~50 min drive
SEE
Reed Lake
~3 min drive
Reed Lake is a 15-acre lake near Cooke City, Montana, at about 7,860 feet. It is managed by the U.S. Forest Service.
SEE
Boulder Lakes
~5 min drive
Boulder Lakes is a 7-acre lake near Cooke City, Montana, at about 9,144 feet. It is managed by the U.S. Forest Service.
SEE
Twin Island Lake
~6 min drive
Twin Island Lake is a 10-acre lake near Cooke City, Montana, at about 9,664 feet. It is managed by the U.S. Forest Service.
SEE
Little Moose Lake
~7 min drive
Little Moose Lake is a 5-acre lake near Cody, Wyoming, at about 8,037 feet. It is managed by the U.S. Forest Service.
SEE
Skull Lake
~7 min drive
Skull Lake is a 6-acre lake near Cooke City, Montana, at about 9,643 feet. It is managed by the U.S. Forest Service.

