A whole month's worth of rain fell in just 24 hours in Mandurah over the weekend after a massive front swept across Perth and the South West.
According to the Bureau of Meteorology, 52.6mm of rain was dumped on the Peel region on Saturday and Sunday, the highest daily rainfall for the month of June since records began.
Rottnest recorded the highest rainfall across the region with 61mm of rain.
Localised flooding was reported in several areas and Mandurah's Rushton Park resembled a pond.
Showers are forecast for today but are set to ease by this afternoon.
Mandurah is expected to reach a maximum of just 14C.

Police issue 31,000 driving infringements in first month of new AI cameras
Works underway on Rockingham and Safety Bay High School redevelopments
New measles exposure sites revealed in Bunbury
Dawesville man charged after allegedly leaving his elderly Great Dane to suffer painful conditions
Good Samaritan sought by police after helping teen during robbery in Baldivis
Under-16s social media ban now in force
Desperate search continues for missing Bunbury FIFO worker
Passengers now able to use credit, debit cards to tag on and off WA's public transport
New floating jetty speeds up emergency response times for Marine Rescue Mandurah