Why do you say that? This time of year, the side yard where my Davis is gets like 1-2hrs of sunlight. It's been running cooler than other stations around me by 2-3F now for a month plus.
Germination will take longer with cooler days. I would have held off seeding where you are till next year. A good rule is you want to seed about 45 days ahead of your 1st frost. That would put your area at 1st week of September as optimal time period.
When was it built? Ours was in 2003, so it's insulated pretty well. Stuff they build today is crazy more efficient than what was built even just 10 years ago.
Getting close. 64F upstairs and 61F down this AM. May tonight depending upon on how it feels to me. I'm only one around, so I don't have wife to worry about.