In Outlook Calendar, you can add as many weather locations as you like as your favorites, and select the one displayed.
To add a location, click on the current location, and click Add Location
Enter the name of the location, or the closest main city, and click enter to get some city propositions
By clicking on the correct location, it will be added to the list and select as current location
Add that way as many locations as needed, and they’ll be available to quickly jump from one to another
It is also possible to remove a location from the favorites ones by going in the list, and clicking on the cross at the right of the location