Question about astrology (kind of).

We've pretty much completely discounted astrology as having any meaningful impact on a person's personality. But what about the seasons of the year, and the weather that comes with them? The stars position in the sky are an indication of the seasons on earth. Right? Wouldn't a baby that is born into a world of sunshine and warmth have a different early development than one born into the cold and darkness of winter? Has any research been done on the impacts of a baby's environmental conditions on their personality?