Don't pack away the umbrella or the winter clothes in Melbourne yet, as this week will be cold and often wet. Melbourne enjoyed its warmest start to spring on record and so far this month has only had one day below 18 degrees. But all that is changing this week with colder temperatures and more rain. Today will peak at only 17 degrees after a cold front swept through overnight. Another front will arrive tomorrow making it colder again, only reaching 15 degrees. Both days will see a few showers moving through, focussing on the east, but the majority of each day will be dry. On Thursday, Melburnians will be able to put the umbrella away for a day. However it will still be pretty chilly, particularly in the morning when the mercury could drop below 8 degrees; the coldest in over three weeks. Substantial rain will be arriving during Friday, likely making the match between Geelong and Port Adelaide a sloppy affair as rain will develop during the afternoon and linger into the evening. For those heading to the game remember to pack the rain coat and wear some winter clothing. The vast majority of the day will be less than 15 degrees and the match will probably start a few degrees colder than that. Rainfall will clear on Saturday with just the chance of a shower or two on Saturday and Sunday. However rain will return again as a low and trough arrive, bringing a soggy start to the next working week.