Brent-
I assume you are in Southeast Alaska.  In our region, nice lawns out in the open, with good southern exposure and excellent drainage potential, are achievable with proper establishment and maintenance.  Short of those critical factors, it is an uphill battle. Without direct sun, your lawn is actually looking pretty decent compared to many.   The best step is to give this publication a good read to confirm you are doing the basics of good fertilization, aeration, watering (during these dry spells), liming etc.
If you are stumped on a course of action, other than providing more light to the ground level by removing or severely pruning trees, please get a hold of me directly. Of course, contact me with any other related inquiries as well. Good growing!