simple-location - Adds Basic Location Support to Wordpress
Currently OwnYourSwarm will allow crossposts with GPS data that allows Simple Location to display. Though OYS doesn’t send the weather data, I presume it could be possible that upon receipt of the OYS data that Simple Location could still be triggered to do a weather lookup so that the checkin could display both the location as well as the weather data for that checkin.
Taking things a half step further, perhaps any micropub or other incoming post creation tool that includes location data could automatically trigger a weather lookup? Then OwnYourGram, DsgnWrks Instagram Importer, or other similar tools that create new posts with location data could provide weather as well.