the future tense employs the helping verbs will or shall with the base form of the verb. Example:She will leave soon. We shall overcome.
When you dream of doing something, use WILL. When you're talking about actions that are far into the future (months or maybe years from now), use WILL. When you're talking about actions that you will do soon (tomorrow or next week), use GOING TO. When you want to ask/request for something, use WILL). How about going to means intending to do something in the future, or being certain or expecting to happen in the future: Are you going to go to Claire's party?
I might go for a walk today but it all depends on the weather.