Ok well there is a sciencey way of explaining the Seasons but there is a mythology way of describing the ways of Mother Nature (Gaia). As you may have read on the page, Greek Major Gods, the story of Hades and Persephone. I'm not going to explain that story here but yet another story. It began like this...
When Hades kidnapped Persephone in the field Demeter was heartbroken. She searched the whole entire world for her daughter. No luck. When she stopped in a small village one of the villagers recognized her as Demeter and asked what brings her to his little farming village. She told him that she was looking for her daughter. Later Zeus questioned Hades and discovered that he had taken Persephone. He demanded that he returned her to the Living world, although Persephone made a fatal mistake. The Food of the Underworld will not allow you to leave. She only ate four so she only has to go back for four month each year. So now that you get the idea here is a brief description of the four seasons.
Summer: As you know the summer is sometimes dry and hot or humid and hot or cool and wet. During the summer is the time the crops grow best. That means Persephone is at home in peace. Demeter lets the crops grow great and Persephone lets the plants grow great also. When they want the summer to be hot and humid, Apollo drives his Sun Chariot close to the earth. Then Zeus and Hera let the rain fall at a drizzle, usually. When it is dry and hot Apollo drives his Sun Chariot close to the Earth and Zeus does not allow rain to fall. This is called a drought. When the summer is cool and wet Apollo drives farther away than usual and Zeus allows rain to fall at what we call a pouring. That is how the summer season works.
Winter: The coldest days of them all. You may wonder why Apollo makes it cold. Really it is not all him. Persephone is in the Underworld during these four months. There is one question that I have that I think I have answered. Why only in the North do we have the four month winter?? Well I suppose that the young Goddess disappeared up in the North, not near the Equator. I can only guess that the South is warm in the winter because the power is not as strong where she disappeared.
Fall: The partly cold and most beautiful season. Persephone, the Goddess of flowers and spring, has the flowers start to die and the Tree Nymphs start their leaves to change color and fall off. Although Demeter allows crops to grow a little longer but usually not for more than two weeks.
Spring: Persephone comes back to the Living and the flowers and crops grow great. Apollo starts to drive his Sun Chariot closer and closer to the Earth.