Melbourne has had its coldest morning since September while temperatures dropped below freezing at Coldstream. Frost formed in Coldstream as it fell below freezing for the second time this season, with the coldest morning since the middle of last winter. Meanwhile, the city fell to a chilly low of 5.7 degrees this morning just before 8am. Many people were left shivering on their way to work without enough layers. Today will be a cool day just above the May average of 17 degrees with mostly sunny skies. The cold morning temperatures won't be repeated in Melbourne for at least a week as temperatures rise into the twenties each day from tomorrow, with minimums above 10 degrees from Wednesday morning. The next cold weather will arrive behind a cold front due on Sunday. Monday through to Wednesday of next week could be quite cold and wet as a low or a series of fronts will impact the city. If you want to get out and about in the sun make sure you enjoy this week's clear, calm and mild weather.