Dark spots generally do not get darker solely due to cold weather. The darkness of the spots is primarily determined by factors such as sun exposure, hormonal changes, skin inflammation, and aging. However, cold weather can indirectly affect dark spots by causing dryness and dehydration in the skin. When the skin becomes dry, it can appear dull and accentuate the visibility of dark spots. Additionally, cold weather may lead to increased sensitivity and redness, which can make dark spots appear more pronounced. It is important to maintain a consistent skincare routine, including moisturizing regularly and protecting the skin from UV rays, regardless of the weather, to help manage and minimize the appearance of dark spots.