Getting data from Nodered to Weather Underground

I've managed over the last year or so to cobble togethera way of getting data from my nodered weather station via thingspeak to the Wunderground site but surely there must be an easy way for sending data directly from nodered to Wunderground - I've done a search but can't get my head around how to do it ( I'm 64 now) - can anyone help or at least give me some clues