FURNACE CREEK, Death Valley in the Summer.

Why do you want to park in the middle of a desert in summer.:?

And no, the ac's will not keep your RV cool enough. RV's are nothing more than a big box sitting out in the open under the blazing sun.

98 degrees in Florida was undoable for me. Couldn't imagine being in an RV in the blazing sun where it gets over 110 degrees often.

Its just to hot. We went in May and it was 118. There are some okay RV parks in Beatty and some nice ones in Pahrump and both would be a better option and then you could drive down to the Valley in the morning and check it out. Because I will never ever ever again take 190 into the park because it scared the heck out of me, I recommend the east side.

I wont call you crazy, but the day time temps will be over 110, cooling off to the 70's at night. Sight seeing and hiking is not going to be pleasant.
My first trip across D V was in June going east to west. Stopped at Badwater early in the morning and is was already 105. Got back in the RV and did not stop till I got to US 395.

Nott exactly sure but my thoughts are no it will not keep it cool enough.At least not during the day.We stopped near needles California one afternoon when the temp was 115 degrees. Had been traveling with dash acnd blowing on us. It was too hot to stay in coach when sun was up, so we cranked the acnd up, went to a casino until after the sun went down. Not sure what daily temps will be in June, but I think it will be too hot for me.