As I've read a number of different blogs, I think that other people may be having difficulties as well. The question is whether the trigger is the change in weather or whether there are the usual triggers: relationships, stress, work, anger, and more.
In case you believe your mood is affected by seasonal elements, I plan to spend the week writing about moods, light, and related topics. In a 1988 article written for DRADA (Depression and Related Affective Disorders Association), Dr. Norman Rosenthal (one of the foremost experts on SAD) writes,
"The symptoms of SAD are very similar to those of nonseasonal clinical depression: change in appetite, weight gain, drop in energy, tendency to oversleep, difficulty with concentration, and irritability. The key factor in diagnosing SAD is its seasonal pattern: the above symptoms fade away with the arrival of spring and return in the fall.
"Another characteristic of the illness is a strong craving for food rich in carbohydrates, which increase the level of serotonin, that is thought to influence mood. It is theorized that people with SAD have difficulty in regulating serotonin levels during the winter and that their craving for carbohydrates is a way of compensating. The theory also explains why many patients respond favorably to selective serotonin-reuptake inhibitor (SSRI) antidepressants such as Prozac or Zoloft. However the cornerstone of treatment for SAD is light therapy."