Idaho campgrounds

Bruneau Dunes is a decent little state park. Might be a bit warm but beautiful skies at night. They have a small observatory there that offers evening programs.

On US 95, Winchester Lake State Park is very nice. Also - at the north end of Sandpoint(on 95) take #200 east around the lake to Sam Owen Cg (USFS) 20 or so miles from Sandpoint. This has to be one of the nicest USFS cgs in that part of the country. On the lake near the end of the Clark Fork River. A very historic point of land. Highway 200 joins US 93 a few miles north of Missoula MT. Take 93 north to Glacier.

X3 Blackwell Island RV Park Ask for a river site. Our kids love the BMX track out by the dog run. Next time we are reserving a boat for sure and spending the day out on the lake.

It's all about elevation in the mountain states.

Keep in mind that Boise is very hot in summer. Ambassador RV in nearby Caldwell is very nice.

Twin Falls to Pocatello is another hot area.

Hwy 75 north from Twin Falls to Stanley is a lot cooler and a nice drive. The Sawtooths have many great forest service campgrounds. Even our 40' motorhome fit in them. Stanley to Salmon and north to Missoula is a beautiful drive with cool temps and also nice forest service campground all along the river with excellent fishing.

Cascade and McCall is a cool temp area but continuing north to Lewiston you'll be getting into hot weather. Then it cools again at Coeur d'Alene/Sandpoint.

Idaho is one of our favorite states to tour. Have fun!

Definitely recommend 3 Island Crossing SP. Massacre Rocks is nice but not super-friendly for large rigs. Off the interstate but interesting to visit and a nice CG is Bruneau Dunes SP. Another interesting side trip, should you be interested, is Castle Rocks SP/City of Rocks National Refuge in far south central Idaho; nice campground there (elec-water) and fascinating scenery, but can be very hot in the summer. I'm not sure, but I think the weekday senior rates are available for in-state residents only. If not, they'd be worth considering.

We haven't found a CG we especially like for Boise; we'll keep trying. :) Have heard good things about Mountain Home RV Park but haven't been there yet; that's about 50 miles east of Boise. Could be a good base camp for visiting Boise and Bruneau Dunes.

One CG we also like, great for an overnighter or for a few days' base camp, is Village of Trees RV Park in Declo, along I-84. It's right on the Snake River (and you can fish from there; license probably needed) and despite being right along the interstate, the trees serve as a bit of a buffer and the noise isn't bad, especially in A & B loops. Conveniently located behind a gas station/restaurant. (It's better than it sounds, trust me.) FHUs, nice private bathrooms in the satellite bathhouse. Good base camp for City of Rocks, Twin Falls, Minidoka National Historic Site, etc.

Glacier has a lot of nice CGs nearby and in Kalispell, but you will need reservations in July & August. Large rigs can be quite happy at the West Glacier KOA, which is an exceptionally nice CG, despite lack of shade. For Yellowstone, our favorite for a stay longer than a few days (which the OP plans to do, and is strongly recommended) is Grizzly RV in West Yellowstone. FHU, very nice CG, convenient to town (restaurants, tourist shops) and only a few blocks from the west gate of the park.

I am following this also since we are planning a western trip next fall. Our preliminary plan is to stay a few days in Boise to see the area but now may have to rethink that. Sun Valley and the Sawtooth National Recreation area maybe too far from Boise. We will be traveling I 84 to Salt Lake City after our stay in Idaho. X2 on Blackwells CG in Coeur d' Alene.

Some of our favorite spots are Three Island Crossing State Park, Redfish Lake in Stanley area, Ponderosa State Park and McCall RV Resort , both in McCall. These are all very popular and are sometimes difficult to get reservations-especially on weekends. Boise is also a great city to visit. Be sure to visit the downtown area. Saturday farmers market downtown is quite spectacular. Several good campgrounds along Hwy 12 towards Lolo Pass. Enjoy!

try this site and have them send you a guide
http://www.visitidaho.org/rv-park-campground/
Lots of good info in it, we order one when we will be visiting Idaho.
Dick

Idaho has so many nice county parks and Forest Service CGs. Also, the state has by far and away the most public and nicest dump stations we have used and seen in our travels. The Tah Majal of dump stations has to be the county facility off US 95 on the north end of Coeur dAlene.

If you are headed through "the heart of Idaho", Redfish Lake or Stanley Lake campgrounds in Stanley are in one of the most spectacular areas of the country. The views of the Sawtooths are unsurpassed. This area is on Highway 75, just an hour or two (depending on how often you stop to take photos) from Sun Valley.

This one is on my 'to do' list! :)