Weather format: Add 3rd option, "Scientific", which would use kelvin

[MorsMortium]

Verification

• [X] I searched for similar issues (including closed issues) and found none was relevant.

Introduce the issue

There are currently 2 options, "Metric" and "Imperial", for Celsius and Fahrenheit. I think some people could like to display temperature in kelvin.

Preferred solution

No response

Version

f8f8993