Higher ground turns first, so the slopes above the road lead the valley by a few days.
Weather Hard frost Tuesday night. Peak may come early and go fast.
No new reports from the ground here this week.
When is peak fall foliage at Caribou-Targhee National Forest in 2026?
Our forecast puts peak color at Caribou-Targhee National Forest around Oct 4, and the four days to aim for are Oct 3 to 6.
The forest runs from about 5,433 to 8,757 feet, and the color comes downhill over about 32 days: the high stands around Sep 18, the low ground around Oct 6. That's 3 days later than our model alone would say, because this September has been running warm.
| Week | In the forest | Elevation at peak |
|---|---|---|
| Aug 31 to Sep 6 | Still green | |
| Sep 7 to Sep 13 | Starting to turn | |
| Sep 14 to Sep 20 | Starting to turn | 8,000 to 9,000 ft |
| Sep 21 to Sep 27 | Nearly peak | 7,000 to 8,000 ft |
| Sep 28 to Oct 4 | Peak color | 6,000 to 7,000 ft |
| Oct 5 to Oct 11 | Peak color | 5,000 to 6,000 ft |
| Oct 12 to Oct 18 this week | Just past peak |
- 8,000–9,000 ftLeaves downpeak Sep 1815%
- 7,000–8,000 ftFadingpeak Sep 2434%
- 6,000–7,000 ftJust past peakpeak Oct 136%
- 5,000–6,000 ftJust past peakpeak Oct 69%
Height off 3DEP inside the forest’s own boundary; each band carries the date our model gives that elevation, corrections and all. The percentage is how much of the forest stands in it.
That’s 3 days later than our model alone would say. This September has been running warm, which shifts peak color.
Plan this tripIf you can only come on certain days
Set the days you can be here. Everything under them answers for those days, not for peak.
Saturday, October 3 to Sunday, October 4
You’ll find it fading up high, nearly peak lower down.
Up at 8,000 feet the stands peak around Sep 18; down at 6,000 feet they hold on until about Oct 6. Pick your elevation for the day you come.
- 8,000–9,000 ftFadingpeak Sep 18
- 7,000–8,000 ftJust past peakpeak Sep 24
- 6,000–7,000 ftJust past peakpeak Oct 1
- 5,000–6,000 ftNearly peakpeak Oct 6
- Where to drive
- Teton Scenic Byway (ID 31, 32 and 33), about 21 miles · Teton Park Road, about 44 miles · Logan Canyon (US 89), about 121 miles
- What turns
- quaking aspen, bigtooth maple, narrowleaf cottonwood, willow, Gambel oak
What turns, and when
- quaking aspen65%
- bigtooth maple12%
- narrowleaf cottonwood8%
- willow6%
- Gambel oak4%
- water birch3%
Also named across Idaho, outside what the canopy read measures here: Black Cottonwood, Western Larch, Rocky Mountain Maple.
Aspens turn gold on the mountainsides, cottonwoods line the river corridors in yellow, and western larches in the northern panhandle go deep amber before dropping their needles.
Questions people ask about Caribou-Targhee National Forest
- When is peak fall foliage at Caribou-Targhee National Forest?
Our forecast puts peak color at Caribou-Targhee National Forest around Oct 4, and the four days to aim for are Oct 3 to 6.
- Where is the best fall color at Caribou-Targhee National Forest right now?
On Oct 13 the forest is just past peak. The last band to peak was 5,000 to 6,000 feet, around Oct 6.
- How long does peak last at Caribou-Targhee National Forest?
About four days at the top, Oct 3 to 6, with a week or so either side that's still worth the drive. Across the forest's elevations the color moves over about 32 days, so there's peak color somewhere in it for roughly 36 days.
- Is Caribou-Targhee National Forest past peak?
Yes. Peak was around Oct 4, and on Oct 13 it's just past peak.
- What trees turn color at Caribou-Targhee National Forest?
Quaking Aspen, Black Cottonwood, Western Larch, Rocky Mountain Maple, Water Birch. Aspens turn gold on the mountainsides, cottonwoods line the river corridors in yellow, and western larches in the northern panhandle go deep amber before dropping their needles.
This forecast is built from the species that stand here, their elevation and this September’s weather, and corrected in season by cameras, foresters and our own crew. Out here we score it against NASA's satellite record of when the canopy shuts down, read inside each unit’s own boundary: two dates in three land within 12 days of it. How this map is made