Community Forum
The two WiFi bands have recently been combined into one with the Comcast gateway devices. Some devices get confused and don't know how to see / talk to combined bands.
If you are not using any Xfi Pods, you can try separating the 2.4 and the 5.0 bands and give them two different broadcast names / SSID's;
https://www.xfinity.com/support/articles/change-wifi-mode-admin-tool-xfinity-xfi
Associate the weather device with the 2.4 band's SSID (broadcast name) and password.