What is the main driver of weather in the United States?

The main driver of weather in the United States is primarily influenced by solar radiation. Solar radiation is the source of energy that heats the Earth’s surface, causing changes in air temperature, pressure, humidity, and ultimately driving weather systems. While ocean currents, prevailing winds, and mountain ranges each play significant roles in shaping local climates and weather patterns, they are all influenced by the broader effects of solar radiation.

Ocean currents help to redistribute heat around the planet, influencing coastal temperatures and weather conditions, while prevailing winds transport air masses across regions and can bring varying weather patterns. Additionally, mountain ranges can alter wind flows and precipitation patterns, creating rain shadows and impacting local climates.

However, solar radiation remains the fundamental energy source that initiates the processes that lead to weather development. It drives temperature variations and atmospheric dynamics, making it the primary factor in determining weather systems across the country. Understanding the influence of solar radiation helps to grasp how various weather phenomena develop and interact within the U.S. climate system.