I was born, raised and have lived just below this mountain my entire life and camped here for the first time just last year.  Now my wife and I, and or my dogs and I will come up for a last minute Stay-Cation.

I have only stayed at the Juniper Campground. The Juniper Campground is one of three campgrounds on Mt. Diablo, and is the closest to the peak of the mountain. I like it because there is a large open space that looks out to the southwest, w and nw with views. When it's crowed and not to cold, I will go to the far back of the parking lot just below the top and almost have the place to myself for the views of the east, se, s and west then return to camp after sunset …shhh. Wake up early and watch an amazing sun rise at the same spot.

You can get some narly a_ _ "Diablo Winds" so make sure you clean your campsite and put your things away including trash and put your fire out completely before going to bed…seriously. I have been there and seen campers looking all over and not able to find stuff the next day because of the winds; on my last trip a guy lost a large storage box he said was around 3'x1.5'x 1.5', so not a small box. The "Diablo Winds" are compared to the notorious Santa Ana winds. The term "Diablo winds" refers to winds that flow from east to west up and over the Diablo Range over the East Bay region. I was there early January 2022, had an amazing clear night with hardly any wind. Went to bed around 10PM because the winds were slowly picking up. By 1AM my dogs was pooping her pants because it felt like my van was going to roll over…okay, I'm exaggerating a little…she really doesn't wear any pants and it might of been me.

Cell coverage has always been great for me. Hope you have a fun time experiencing this awesome place.