You also might want to look in to getting one of those light boxes used in locations where it rains a lot of far enough north that it's dark most ot the day part of the year.

Seasonal Affective Disorder (SAD) is a type of depression that comes and goes with the seasons, typically starting in the late fall and early winter and going away during the spring and summer. Depressive episodes linked to the summer can occur, but are much less common than winter episodes of SAD.

I'd check the Vitamin D insufficiency angle. Maybe some Serotonin also.

All good advice and comment's. Its quite possible I do have spring fever. Does anyone have some good treatment for this malady

You live in a place where the sun forgets to come out. Try the desert. When you are listless, you are forced to wake up or die from the heat. Fact. Lol.

Change in barometric pressure, perhaps?

Where you are...the air is fresh & fantastic! The rain washes dirt away & makes everything new. The flowers are about to EXPLODE in abundance! HELLO Spring Fever❣?

Cabin fever? I know I've got it!