Another option / possible way to do it is by using “Ezlo Weather”. Its a “Nucal” cloud integration there is a menu option for Nucal in the Ezlogic web UI. Under Integrations → Cloud Services
And you can then create a Meshbot rule to pull down weather data from the Ezlo Weather cloud service and probably parse out the particular data you want, to use in a variable as a trigger for another Meshbot rule etc.
Think they may also even support OpenWeather via this Nucal Cloud Integration service but I’ve not tried it.