I asked my friends one day.
Warming melts the polar regions, causing higher sea levels, which in turn evaporates. This causes more clouds. Clouds = less sun, so the world becomes cooler. Rain freezes as it falls, causing snow. This is moreso in warmer places, like Texas, because water can evaporate faster in warmer areas.
Global warming is just a way of saying weather extremities.
Did you have a good time in the freezing glory hole?