National Historic Trail
California
Best primary window for California: April, with May and October as strong shoulder months.
State Hub
National Park Sites in Idaho
Idaho has 1 national park on the official list of 63 (as of Oct 19, 2026) and 8 other National Park Service sites. National parks: Yellowstone National Park. The other sites include 3 national historic trails, 1 national historic site, 1 national historical park, and 1 national monument (Hagerman Fossil Beds National Monument).
1National parks
9NPS sites
This state hub exists to compare National Park Service places in Idaho by available source and seasonal signals.
National parks in Idaho
Featured Places
Explore top destinations across the state.
National Reserve
City Of Rocks
Best primary window for City Of Rocks: July, with August and September as strong shoulder months.
National Monument & Preserve
Craters Of The Moon
Best primary window for Craters Of The Moon: July, with August and September as strong shoulder months.
National Monument
Hagerman Fossil Beds
Best primary window for Hagerman Fossil Beds: July, with August and September as strong shoulder months.
National Historic Trail
Lewis & Clark
Best primary window for Lewis & Clark: July, with August and September as strong shoulder months.
National Historic Site
Minidoka
Best primary window for Minidoka: July, with August and September as strong shoulder months.
National Historical Park
Nez Perce
Best primary window for Nez Perce: July, with August and September as strong shoulder months.
National Historic Trail
Oregon
Best primary window for Oregon: July, with August and September as strong shoulder months.
All Places
Compare available seasonal planning briefs and source status for NPS places in this state.
National Historic Trail
California
Best primary window for California: April, with May and October as strong shoulder months.
National Reserve
City Of Rocks
Best primary window for City Of Rocks: July, with August and September as strong shoulder months.
National Monument & Preserve
Craters Of The Moon
Best primary window for Craters Of The Moon: July, with August and September as strong shoulder months.
National Monument
Hagerman Fossil Beds
Best primary window for Hagerman Fossil Beds: July, with August and September as strong shoulder months.
National Historic Trail
Lewis & Clark
Best primary window for Lewis & Clark: July, with August and September as strong shoulder months.
National Historic Site
Minidoka
Best primary window for Minidoka: July, with August and September as strong shoulder months.
National Historical Park
Nez Perce
Best primary window for Nez Perce: July, with August and September as strong shoulder months.
National Historic Trail
Oregon
Best primary window for Oregon: July, with August and September as strong shoulder months.
National Park
Yellowstone
Best primary window for Yellowstone: July, with August and September as strong shoulder months.
NPS designations in Idaho
States in the Rocky Mountain region
Browse all state hubs or every NPS place.