We've been having gray days.
I looked up Seasonal Affective Disorder. I don't have it, but I can still complain. When the sun ceases to shine, the only symptom they list that I regularly exhibit is lethargy. A good hike would cure me, and a cool day is perfect for hiking.
Alas, not today. A person's gotta make a living. I suppose there are people in the world who get paid for hiking, but I'm not one of them.