Where in MN? I'm around St. Cloud area. Oct. is just a guess as to weather--you might get a beautiful sunny week--then again? But ya know, for your honeymoon, well if it's just raining once in a while...you could probably find somethin' else to do...personally, I would probably try to head down a little later if hot sunny weather is a must--don't get me wrong, I most certainly would say GO TO AC, just understand the weather at that time of year can be a coin-toss!