Hot and wet conditions are perfect for mold growth, which can really destroy a cannabis plant. The flowers are the most vulnerable parts to growing mold. One common type is called powdery mildew, which looks like white or gray powder on leaves. Giving the roots cool water on a hot day is a good idea, as long as the water isn't too cold, which might shock the plant. I think as long as you continue to keep it watered, it will thrive in the sunshine! Your flowers will be huge soon :)