Weather forecast for Perth effective as of 12:00 AM Sunday September 16

Weather forecast for Perth effective as of 12:00 AM Sunday September 16
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!


This morning was relatively cold due to radiational cooling of relatively dry air overnight.Cold morning again on Sunday with radiational cooling of relatively dry air.The chance of patches of frost.

A west coast trough ,moves inland today,a cold front moves across the region at night with a cold air mass over the region  on Monday.

Sunday September 16:

City:

3-19 Degrees Celsius

Clouds developing.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Sunny becoming partly cloudy from late afternoon.Patches of frost possible early.A slight(20%) chance of a shower in the southwest from late afternoon,a near zero chance elsewhere.Light winds becoming south-southwesterly at 20-30 km/h from afternoon becoming southerly at 5-15 km/h at night.

Monday September 17:

City:

7-17 Degrees Celsius

Clouds increasing.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Sunny morning becoming partly to mostly cloudy in the afternoon.A slight(20%) chance of a shower near the coast in the early hours,a near zero chance elsewhere.Winds southeasterly at 10-20 km/h tending south-southwesterly at 20-30 km/h in the afternoon.

Tuesday September 18:

City:

6-19 Degrees Celsius

Clouds developing.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny morning becoming partly to mostly cloudy in the afternoon.Light winds tending southwesterly at 15-25 km/h in the afternoon.

Wednesday September 19:

City:

7-21 Degrees Celsius

Mostly sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Light winds tending south-southwesterly at 15-25 km/h during the afternoon.

Thursday September 20:

City:

8-24 Degrees Celsius

Sunny.

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

Sunny.Light winds.

Friday September 21:

City:

9-26 Degrees Celsius

High clouds(mostly sunny).

Chance of any rain:0%

Amount:0 mm.

Perth metropolitan area:

High clouds(mostly sunny).Light winds.

Saturday September 22:

12-26 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.A slight(20%) chance of a shower.Light winds.

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.