Is precipitation on Earth possible without thermal energy?

no

Explanation:

Energy is needed to turn the water into vapor from a liquid for it to precipitate as rain.

No, precipitation on Earth is impossible without thermal energy.

Explanation:

Thermal energy is the energy possessed in a system which is responsible for its temperature. Water bodies are the sources responsible for precipitation. Most of the Earth's water exists in Oceans. The sun is the main driving force behind the water cycle as it is responsible for heating up of oceans. The Sun's heat (flow of thermal energy is called heat) warms up the Ocean's water and some of it gets evaporated into the atmosphere as water vapor. Water also gets evaporated by transpiration. All this water gets evaporated and rises into the air where the temperature is comparatively cooler which results in it to condense into clouds. Clouds move around because of air current, collide with each other, grow in size and then fall on Earth as precipitation. In this way, we see that the water cycle is responsible for bringing precipitation which is possible only because of the heat (thermal energy) provided by the sun.