Weather forecast for Perth effective as of 12:00 AM Saturday September 15

Weather forecast for Perth effective as of 12:00 AM Saturday September 15
Explanatory notes:
Scroll down below this section for forecast. 

Figure 1.Surface synoptic chart at 12 UTC(8 PM local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM)

Figure 3.Key features identified on True Colour RGB satellite image at around 06:00 UTC(2 PM local time yesterday).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 4.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 12 UTC(8 PM 
local time yesterday).Image courtesy of the Australian Bureau of Meteorology(BOM).

Figure 4:Surface synoptic prognosis.Image courtesy of the Australian Bureau of Meteorology(BOM).

Perth experienced the wettest August in 50 years with 186.0 mm of rain so far!It was also the wettest winter month since June 2005 and the wettest winter in 15 years!


From the weekend summer like synoptic situation,but much cooler.Cold morning on Saturday and Sunday with radiational cooling of relatively dry air.

A west coast trough lies builds near the west coast today,moves inland on Sunday,lies inland until the end of the forecast period.

Saturday September 15:

City:

4-20 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Winds east-northeasterly at 10-20 km/h becoming light from afternoon.

Sunday September 16:

City:

4-20 Degrees Celsius

Sunny day.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Sunny day.Light winds becoming south-southwesterly at 20-30 km/h from late morning becoming southeasterly at 15-25 km/h at night.

Monday September 17:

City:

7-18 Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds southeasterly at 10-20 km/h tending south-southwesterly at 20-30 km/h in the afternoon.

Tuesday September 18:

City:

5-19 Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Light winds tending southwesterly at 15-25 km/h in the afternoon.

Wednesday September 19:

City:

7-20 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Light winds tending south-southwesterly at 10-25 km/h during the afternoon.

Thursday September 20:

City:

7-23 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Light winds.

Friday September 21:

City:

9-23 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Light winds tending south-southwesterly at 15-25 km/h in the afternoon.

Forecast for today produced at 12:00 AM,forecast for the rest of the days produced at 4:20 PM Wednesday July 11.Weather icons courtesy of the US National Weather Service.