The weather may be awful, in which case attendance will take a hit. That said, odds that it will be a high of 29 are pretty slim. That's unusual mid-November weather. No doubt it's possible, as it has happened recently, but if it happens you make the best of it. If the meet is held at mid-day, that will likely be the warmest time of day. I got this quote from weatherspark.com for November 14 weather in Iowa City: "The temperature typically varies from 36°F to 49°F and is rarely below 25°F or above 63°F." So odds are the temp will be in the low-to-mid 40's at mid-day on November 14. Not a bad chance it could be pushing 50. Pretty unlikely it will be in the 20's. It's just as likely to be a nice day as a crappy one. We all know it will be a little chilly, at least, but that's part of the fun.
No tailgater is anywhere close to an insurmountable distance from Kinnick. Nearly everyone is within a reasonable walk, and the rest can take a shuttle. I don't see distance as an issue at all.
So to sum up, we could look at the glass as half-full and see the possibilities for a uniquely fun and historic day of wrestling and football in Kinnick, or we could pee in our Cheerios and assume the worst. It's about that simple.