Forecast for Melbourne, issued 18th December, 4pm.
Wednesday : Warm and becoming humid, isolated showers and thunderstorms developing in the afternoon, tending to rain later. Light NE winds, freshening later.
Min 16 Max 31
Thursday : Early rain and isolated thunderstorms, easing to a few showers. Winds shifting cooler SW early morning.
Rainfall 8 – 15 mm
Min 13 Max 22
Friday : An early shower or two then fine, mostly cloudy with light to moderate SW winds tending SE later.
Min 12 Max 21
Saturday : Fine and mild to warm, partly cloudy, with light SE winds.
Min 15 Max 27
Sunday : Fine and sunny at first, very warm with cloud increasing later and rain developing overnight. Light to moderate N/NE winds ahead of a Sw change at night.
Min 16 Max 34
Monday : Cooler with patchy rain and isolated thunderstorms until evening, isolated showers to follow. Light to moderate SE winds.
Min 17 Max 26
Tuesday : Cool and cloudy with a shower or two, moderate to fresh Sw easing later and tending light Se.
Min 16 Max 22
Notes on the Weather : A very active low pressure trough dominates the country, tropical moisture is being advected South into the trough from NW WA, and a high pressure ridge is over SW WA. A cold front is laying across Victoria, with a low pressure trough through NSW.
Cooler weather has now become established across Victoria, with the passage of a cold front. Conditions will become fine and warmer on Tuesday and Wednesday, ahead of another cold front that will move through on Thursday morning. Scattered showers will develop on Wednesday afternoon and extend Eastwards across the state late in the day and over night. On Thursday a cooler SW flow will become established, with scattered showers in Southern and mountain districts.
On Friday we will see clearance as a high pressure ridge moves through and we see a return to fine weather, with temperatures warm throughout with light winds. Late in the weekend winds will become light NE and the pattern will again become humid as the next system develops for the Xmas period over WA.