You have to change your easyweathersettings from using SQL to using WU Then I can check what the problem is.
BUT: https://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KMERAYM03&graphspan=day&year=&format=1
Returns no data, only the header line. You have a typo in your settings.
You typed KMERAYM03 but your WU station is KMERAYMO3 That will solve the WU-graphs
Wim