(zou) kunnen, (zou) mogen
May- kan (nog minder waarschijnlijk) of mag.
It may become hot tomorrow, but only if the sun manages to come out.
You may go outside after you've finished your homework.
Might - kan (zo goed als onwaarschijnlijk) of zou mogen.
It might become hot tomorrow, but since it's still winter, it's unlikely.
I might come to your party, but I still have to ask my parents.