Overcast controls the cloud coverage. Higher values mean darker clouds and increased chances of rain.
Fog affects visibility distance. Higher values create denser fog, limiting visibility.
Rain intensity is tied to overcast levels. Rain can only occur when overcast is above 60%.
Wind affects tree movement and sound propagation. Wind direction is measured in radians (-3.14 to 3.14).
Storms create lightning effects. They require high overcast values (90%+) to occur.
Snow intensity is tied to overcast levels. Snow can only occur when overcast is above 70%.