I'm not a native, but I think both 'may' and 'might' can be used to talk about the future or present. The difference is that 'might' suggests a higher degree of uncertainty, hesitation in comparison with 'may'. I may see you tomorrow. (perhaps a 50% chance) It might snow tomorrow. (perhaps a 25% chance)

"Might" speaks of a possibility. It might rain tomorrow, there are a lot of clouds in the sky. I might come to your party. This is actually incorrect grammar because it should use the present tense, "may." However, it is used a lot. "Maybe" has the meaning of "perhaps." You can say, "Maybe it will rain tomorrow." "Maybe I can come to your party." It shows a possibility with some doubt.