Is a March wedding a good one in Mississippi

Ask the local board. I have no idea. I'm from Canada. You'll get way more help from a Mississippi board.

Seriously Gena, you have started three threads in 15 minutes and hidden two. Maybe you need to think about what it is you want to ask before creating any more threads. We can't help you if you are all over the place. Nor will we plan your wedding for you. You're going to have to do some research/work on your own.

And by local board, people mean FB or google wedding boards directed towards Mississippi brides. This is not one.

Depending on location in MS generally the weather is cool. Southern weather is crazy on the coast of MS from Jan through April. If it's indoors you shouldn't have an issue. Outdoors I'd probably seriously have to think about. It's April 2nd now & the temps are only expected to be in the low to mid 70's.

Check the Farmer's Almanac, it is about 80% accurate in long range weather predictions. You can also see history of previous weather.

I'm in Alabama and the weather is super scattered. One day you will want to wear tank and shorts, the next it is snowing! I'm not kidding!