Openweather Caching

To be completed by the original poster:

CMS Version

3.10.x

Player Type

Windows

Player Version

3.x.x

Issue

With the advent of charging for openWeather. Like most people we are trying to keep below the charging threshold.
So could someone please clarify if there are 10 signs all displaying weather for the same location, I there one call to the openweather API serving all signs, or does the CMS make a call for each display requesting the weather?

TIA

Peter