I am looking to get a cumulative value for proposed rainfall in the coming 8 or 12 hour window. I have api.openweathermap working well with Ghost XML, so for instance I am alerted if the forecast temperature is due to drop below a certain point.
However adding values together has me stumped. I did look at converting values to variable but this didn’t help me. I need to take say 12 value readings and add them altogether to create one new value.
I wonder if anyone could make a suggestion.
Thank you I’m advance.