昆州、西澳北部和北領地一帶將受到一條寬槽影響而遭遇陣雨及雷暴天氣。潮濕東風將導致新州沿岸地區的雲量增加，悉尼將持續一周降雨。

Widespread showers & storms are forecast to develop across southern #Qld & the northwest inland of #NSW today, with possible heavy falls & severe #thunderstorms. Showers & storms expected to spread southwards into central NSW tomorrow. Latest forecasts: https://t.co/apAT14QLUk pic.twitter.com/x5zUJgJNax

— Bureau of Meteorology, Australia (@BOM_au) March 16, 2021

據9號新聞網報道，周二（16日）上午晚些時候及下午早些時候，悉尼盆地（Sydney Basin）將開始下陣雨，部分地區的降雨量可能達到5至10毫米。潮濕天氣將持續至下周末，悉尼盆地雨量最高可能超過60毫米。

Get ready for another wet week across NSW! Today we can expect showers east of the Divide, mostly during afternoon & more likely in the evening. Showers & isolated thunderstorms expected over the northwest inland, with possible heavy falls later. Details: https://t.co/RMKhWVRFBC pic.twitter.com/iGPV9zkv5s

— Bureau of Meteorology, New South Wales (@BOM_NSW) March 16, 2021

周一，阿德萊德及悉尼迎來了27年來最冷的早晨，氣溫分別為9.4度和12.2度。墨爾本也迎來最冷的一天，但氣溫將在周二轉暖。

與此同時，一個高壓系統將使到其它地區保持乾燥和晴朗天氣，暖氣團將被引至西澳南部。據預測，珀斯至下周一前，氣溫會維持在超過30度，最高氣溫達到34度，周五將升至峰值。