Why not Haziran sıcaktır?
We accept it, but I am going to direct you to this page to get a full explanation of when to use -DIr. Please read it! :)
I think when we are saying that June is hot in general, we can say " Haziran sıcaktır", like " Haziran Misirde sıcaktır.", but if we are talking about a given June, like this year, June is hot, we don't use the "tır" ending, right?
Exactly. The -DIr ending here would be to state a irrefutable fact. If you are just making a statement of opinion about the current state of this June, then you would exclude it!
How would we say "it is hot in June"?
Mr Alex I can't open this page
the "apostrophe+s" should be accepted as "is"