Newcastle, Texas - Historical information on how Newcastle got its name, and its agricultural importance to North Central Texas. Weather Underground: Newcastle, Tx - Current conditions and forecast. Includes active weather advisory bulletins. Resource Guide - Historical information, facts and figures. Newcastle Local News: Topix - Local, regional, and statewide news collected from diverse sources on the web. Handbook of Texas Online: Newcastle, Tx - Community history and information. Includes references and further information sources. Newcastle ISD - PreK-12th grade. Includes contact information, links to each faculty member, and district news. The Weather Channel - Newcastle, Texas - Local forecast, current conditions, radar, and links for national and international weather information.