I do it almost every year
In fact, this is the first year in a long time, where I had some warm nights.
You get a lot of blght problems, but unlke me this year, if you start with daconil early they do fine. Production is down somewhat but you do get tomatoes. I think it's the dew every morning that gets mie, because I do't get sun until way after noon.(Too evaporate it off)
CECIL