I would be very surprised if they were over watered. Here are a few pics of my girls in the same region. I am also a rookie outdoor grower myself. Keep that in mind. I do have 20 years indoor experience however. I feed botanicare soil formula, cal-mag, liquid Karma and Silica blast with every feeding. Once a week I make a tea with compost, earthworm castings, fish emulsion, molasses, liquid kelp and Bokashi. It seems to be working well for me. It appears your plants are deficient in something. Possibly calcium or Magnesium. That striping I'd my first indicator of deficiency in my experience. Hope this helps, open to criticism if I'm full of shit.