Help travelling to USA?

Im traveling to usa in june and i was wondering what is the weather like in june july august. im spending a week in LA and the rest of the time in New York and some place called the king of pruissa. what are the must see places around there
oh im travelling from australia
ooo i just found out king of prussia is in Pennsylvania or somewhere near there

Um.... well in june,july august you can expect good weather. I mean it's not gonna be cold or too hot. As for king of prussia? never heard of it.

LA in the summer is hot (avg. 80-95*F) and somewhat humid. New York is probably the same, maybe less hot and more humid.

It will be on average a Hot 80 to 95 all 3 of those months,,,,,,, In california see the Golden Gate Bridge and in new York of coarse you must see the Ground Zero Site of the twin towers...

I live in Southern Calif about an hours drive from LA. The weather can be hot and humid but mostly it's been mild and warm the last few summers. You have to see Disneyland. San Francisco, a place I lived close to for many years, can be fickle in the susmmer. Warm one minute and foggy and cold the next.

Here is how the movie Camelot (Richard Harris and Vanessa Redgrave) puts it mildly.
"A law was made a distant moon ago here. July and August can not be too hot. By order summer lingers through September."
Expect 80+ (deg. F.) in NYC and 90+ (deg. F.) in LA.
I suggest you bring an umbrella in LA and a sweater in NY.
If you are staying in the hotels, you can always find brochures in their lobbies. If not, pick up some brochures. They are free.

LA in June: warm and comfy

NY in june and july: hot and hotter (don't be surprised if you see people wearing bikini's in the parks)
*favorite thing for NY in july: Shakespeare in the Park

King of Prussia: Pennsylvania??
If you like shopping you could drop by Lancaster, Pennsylvania. Hershey Park isn't that far either. If you love chocolate, I'd definitely drop by there.