7 day weahter forecast

Effective as of 4:00 PM Friday September 4 2020

Explanatory notes:

Possible fog overnight with moist low level air and the expectation for stratocomulus clouds to largely clear. This is especially the case with winds expected to be a light northeasterly advecting cold air from the northeast with also cold ir drainage off the hills.

The rest of Friday September 4:

City:

Clouds decreasing.

Chance of any rain:5%

Perth Metropolitan Area:

Partly to mostly cloudy becoming mostly clear at night.The chance of fog developing later at night.Winds west-northwesterly at 10-20 km/h becoming light at night.

Saturday September 5:

City:

9-22 Degrees Celsius

Possible early fog.Partly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Fog possible early.A slight(30%) chance of showers in the southwest from afternoon, a slight(20%) chance elsewhere.Light winds becoming northwesterly at 15-25 km/h from late morning.

Sunday September 6:

City:

15-22 Degrees Celsius

Windy with showers.

Chance of any rain:100%

Amount:5 to 15 mm

Perth Metropolitan Area:

Mostly cloudy.A very high (100%) chance of showers.Winds northwesterly at 20-30 km/h increasing to 25-40 km/h in the morning shifting west-northwesterly at 20-35 km/h during the afternoon.Gusty winds between late morning and late afternoon..

Monday September 7:

City:

12-19 Degrees Celsius

Shower or two.

Chance of any rain:70%

Amount:0.4 to 2 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A high (70%) chance of showers.Winds west-southwesterly at 15-30 km/h becoming light at night.

Tuesday September 8:

City:

9-21 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Light winds.

Wednesday September 9:

City:

10-22 Degrees Celsius

Late showers.

Chance of any rain:70%

Amount:2 to 6 mm

Perth Metropolitan Area:

Partly cloudy.A high(70%) chance of showers from evening.Light winds becoming northwesterly at 15-25 km/h during the day.

Thursday September 10:

City:

12-19 Degrees Celsius

Showers easing.

Chance of any rain:70%

Amount:1 to 5 mm

Perth Metropolitan Area:

Partly cloudy.A high(70%) chance of showers most likely during the early hours.Winds west-southwesterly at 15-25 km/h.

Friday September 11:

City:

8-19 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Light winds.

Charts:

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

Figure 2.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 3.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).

Some data on this site is sourced from the Australian Bureau of Meteorology(BOM). Weather icons from the US National Weather Service.