This is a great experience!! Take the tram up in the late afternoon so you can park at the closest parking lot. Take the tram back down after it gets dark so you can see the lights of the city - beautiful!! The tram's inner floor rotates so everyone gets a good view. It was 104 in Palm Springs the day I went, but it was 60 degrees up at the top - cool and refreshing!! Bring a light jacket though because it's chilly once the sun goes down. If you like to hike in the woods you can access them from up there San Jacinto National Park. Views of the woods are very pretty although, to be honest, I think Sedona AZ is much more beautiful! But it's a fun trip and gives you a new perspective on the Palm Springs area. From up above, you can view the windmills below.
You should absolutely do this if you are staying in the Los Angeles area. The desert drive is breath-taking and the views from the top of the mountain are absolutely amazing. All staff are friendly and helpful. You can spend as much time as you like at the top. We travelled up late afternoon daytime and travelled down after dark, which was beautiful.
A pleasant excursion and a relief from the heat -- not that I minded the heat.