Australian Government Bureau of Meteorology Tasmania Frost Warning for Upper Derwent Valley forecast district Issued at 10:54 PM EST on Tuesday 22 September 2026 ================================================================================ Please be aware Temperatures at ground level can be many degrees lower than those recorded by standard weather stations, especially in calm conditions with clear skies. ================================================================================ Frost Warning for the following areas: Upper Derwent Valley forecast district Frosts with temperatures down to -1 degrees are forecast for Wednesday morning in parts of the Upper Derwent Valley forecast district. Cancellation of Frost Warning for the following areas: Midlands forecast district The Frost Warning for the Midlands forecast district has been cancelled. No further warnings will be issued for this event.