Picture-elements conditional for tomorrow weather


Im trying to get the weather icon for tomorrow.
I can get the weather icon for today, so if the weather is rainy, then this will show the weather icon for today:

              - type: conditional
                  - entity: weather.hjem
                    state: rainy
                  - type: image
                    image: /local/icons/weather_icons/icon/rainy.png
                      top: 10%
                      left: 90%
                      width: 10%
                      pointer-events: none

But how can I get the weather icon for tomorrow, if it also say it’s rainy tomorrow, how can I then get the icon from the forecast in the weather.hjem sensor ?
(i’m using it inside a picture-element)