Following Geelong College, he studied journalism at Deakin University, earning a bachelor's degree in communications.

[7] In May 2016, Templeton joined Sunrise as its Melbourne correspondent, replacing Rebecca Maddern who moved to the Nine Network.

[11] In November 2022, Templeton stepped down as Sunrise Melbourne correspondent and was replaced by Teegan Dolling.

[12] A life-long fan of the Geelong Football Club, Templeton was a ground announcer at GMHBA Stadium and emcee for various functions.

[14] On 9 April 2024, Templeton was found dead in Zillah Crawcour Park by the Barwon River in the Geelong suburb of Newtown after suffering a medical episode while out walking his dog.