While I agree temperature will be a concern you might be able to pull it off. Just depends on how hot it gets where you are at. You'll probably have to have a fan and keep the shed really ventilated but if you get a heat tolerant strain like durban poison and can keep it under 100 degrees most of the time you should be able to pull it off. Remember that you usully don't ever want to go over 95 degrees, 80 - 86 being the correct range and 75 being optimal.