Found a great spot for Solar powered WiFi weather station:

My deck, it will block the rain, block the sun, and easy to mount solar panel

Pictures:

The battery with charging PCB is still naked, I am waiting for the PCB shipment so I can make the Battery Node. Stay tuned.

This is another one in front of my house, it is facing south, so lots of sun shine, 2 sensors will give me both the temperature under the sun or not.