Our rainy season comes from the south. It happens all over the world this time of year. Most of the world refers to it as the monsoon. It's simple enough to understand. As the planet tilts its north axis toward the sun, the northern hemisphere warms and more moisture evaporates into the atmosphere. As the tilt increases, the tropical weather zone moves northward along with the increased warming. This explains why the rainy season arrives in southern Mexico about a month earlier than our own rainy season. It also explains why we typically get rain during the evening during the rainy season...cooling temperatures in the evening force the excess moisture in the atmosphere to condense into rain. Occasionally, storms develop that are strong enough to spin off and head north on their own ahead of the system. Both the rainy season and the occasional storm originate in the same weather system, which comes from the south. And it has arrived. Welcome rainy season.
