Cumming completed her Journalism degree at the University of South Australia, where she majored in International Relations.
She covered many stories and gained a wealth of experience at a number of places including Southern Cross Ten in Canberra, DMG Regional Radio in North Queensland.
In 2007, Cumming moved to Sydney to work as a reporter for Seven News, where she was a fill in weather presenter for Sara Groen and covered for Natalie Barr on Sunrise.
In November 2010, it was announced that Cumming would replace Sara Groen as weather presenter on Seven News Sydney.
She remained in this role until taking maternity leave towards the end of 2015, and she was replaced by David Brown.