Weather is shown in Fahrenheit regardless of the setting in the GNOME Weather app.
Affected version
OS: Arch Linux
GNOME Shell: 1:42.3.1-1
GNOME Weather: 42.0 (Flathub)
Bug summary
GNOME Shell's temperature display continues to use Fahrenheit even if the user has selected Celsius in the GNOME Weather app.
Relevant logs, screenshots, screencasts etc.