Parts of Queensland and New South Wales experienced their highest August temperature in eight years today. An unseasonably warm air mass is sweeping over eastern Australia ahead of an approaching trough, causing temperatures to climb more than 10 degrees above average in both states this afternoon. Today was the warmest August day since 2009 in Queensland's Gatton (32.9C), Ipswich (33.9C), Charleville (33C), Toowoomba (27.8C), Sunshine Coast (30C), Beaudesert (30.9C), Blackall (33.7C) and St George (33C). Across the border, it was also the warmest August day in eight years for Port Macquarie (32.4C), Grafton (32.3C), Kempsey (32.4C), Taree (30.4C), Lismore (31.5C), Glen Innes (23.4C) and Moree (30C). The hot air has targeted eastern Australia today after sending temperatures soaring in the nation's interior yesterday. Oodnadatta's 35.8 degrees on Tuesday was South Australia's highest August temperature in 47 years. Tomorrow will remain warm in central and southeast Queensland, although cooler air behind the trough will reach northern New South Wales and parts of southern Queensland. This cooler air mass will spread further into central and eastern Queensland from Friday, dropping temperatures closer to, or even below average, in both states this weekend.