Maximum temperatures in the mid-thirties to low forties through most parts, and in the mid-twenties to low thirties over elevated terrain. Overnight minimum temperatures in the mid to high teens. Severe to extreme heatwave conditions are expected to persist through this week, easing later in the weekend. Locations likely to be impacted include Canberra, Belconnen, Gungahlin, Tuggeranong and Woden Valley.