microclimate

/ˈmaɪkroʊˌklaɪmɪt/
noun
  1. The climate of a very small or specific area, which can be different from the climate of the surrounding region.
    • Farmers use greenhouses to create a warm microclimate for their crops.
    • The valley's microclimate stays cooler than the nearby desert.
    • The garden has its own microclimate because it is sheltered by tall walls.