I'm located in central Kansas. Most of our worst weather will be in December and January. You mentioned about the plants, a couple days notice at Grand Island will get you a tour there. Moving south if you are into aerospace science and some of that history you have the Kansas Cosmophere at 17th and Plum in Hutchinson. lots of space and rocket stuff. V-1 and V-2 rocket, sputnik, space suits, Apollo command capsuel, space shuttle mockup, SR711 Blackbird as you enter, lunar module etc. These guys are the ones that built all the sets for Apollo 13 the movie and have restored a number of space artifacts, most notably of late the liberty 7 space capsul from Alan Sheppard. They did find a mercury head dime as he always flew with a roll of them, but could not answer the question about pilot or mechanical error that blew the hatch. Also in Hutchinson the underground salt mine museum opened last year. Have heard its a good deal. There is also a airplane museum in liberal, SAC facility in Omaha. If you are not color partial, AGCO headquarters in Hesston Kansas can also provide an excellent tour. If you tastes lean more toward agriculture there is Pioneer Village in Minden, Nebraska, not far from Grand Island, and further south there is a tremendous aquarium in Jenks(Tulsa) Oklahoma that is definately worth the visit. Hope this gives you some ideas.