Here is a link to the journal of my ride from SF to Carson City along the Western Express route. In September, the weather was cool and I even got a snow on the day I rested in Carson City. In the heat of June, the climbs might get tougher (is that even possible?) but they might not. You might check journals at www.crazyguyonabike.com for anyone who rode that route in June/July.

The climb from Placerville to Carson Pass must be respected. It was my hardest day on a bike, ever. But, it was also through some beautiful country. That said, I didn't have any camping equipment so simply camping on the side of the road (plenty of places to do so) when I got tired wasn't an option.

I don't know what happens after Carson City, though I do know that water will get to be an issue. Check out this thread at crazyguyonabike.com.

Here is a page from www.biketouringtips.com which has 3 links to information about carrying water on tour.

Good luck,

Ray