Needs (sudo apt install plasma-widgets-addons) if you don't already have the default KDE weather widget installed.

Plasma 5 Widget: https://www.pling.com/p/1287928/

Uses the default KDE weather widget's data sources.

* Can show the desktop widget background individually behind each day.
* Can display a limited number of days if the data source displays too many.
* Can change font size and colors.
* Displays Environment Canada data as 2 rows (for day/night).