Too Late Tomatoes

With the weather getting colder every day, our poor tomatoes are looking like they won't be able to fruit. We keep seeing flowers blossom, but no fruit yet have appeared, and it is very unlikely that they will. Although, it is surprising how long into the season they lasted, as well as the lack of diseased plants we overall had. Tomato leaf curl virus was a known threat when we planted these tomatoes and yet only a few were diseased.