I am searching for a site which gives hourly temperature data for specific locations in Arkansas (I have zip codes) for the year 2014. Please assist.
I would start here: http://www.climate.gov/hourlysub-hourly-observational-data-hourly-global-%E2%80%93-gis-data-locator. It looks like you can go to "View Data", then select the stations of interest from the map, then specify the dates and data elements that you want. It does not guarantee that hourly data will be available from every station.