what is the difference between may and might ?

hi hani Might (past form of may) Used to suggest a smaller possibility than may does (actually, might is more common than may in American English) : He might have finished it. I might go see a doctor. I might not come this time. It might be right. You might have lost it. The store might have been closed today.

hi hani May Used to ask for formal permission: May I come in? May I say something now? May I ask one question? Used to suggest something that is possible: She may agree with this plan. They may not be happy about what happened. It may shower tonight.

In popular usage and speech, may and might are used interchangeably when referring to possibility and probability, but there is a slight difference between the two. May is used to express what is possible, factual, or could be factual. For example, He maylose his job.