7 day weather forecast

Effective as of 4:00 PM Saturday October 20

Explanatory notes:




Showers continue today in a moist northwesterly flow.

A cold frontal passage tomorrow.

The rest of Saturday October 20:

Possible shower or two.

Chance of any rain:40%

Perth metropolitan area:

Mostly cloudy.A medium(40%) chance of showers.Winds west-northwesterly at 20-30 km/h becoming westerly at 15-25 km/h at night.

Sunday October 21:

15-21 Degrees Celsius

Showers.

Chance of any rain:95%

Amount:1 to 4 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(95%) chance of showers.Winds westerly at 20-35 km/h becoming southwesterly from afternoon.

Monday October 22:

12-19 Degrees Celsius

Possible light shower.

Chance of any rain:30%

Amount:0 to 0.2 mm.

Perth metropolitan area:

Cloudy becoming partly cloudy from late afternoon.A slight(30%) chance of light showers and/or drizzle.Winds south-southwesterly at 15-25 km/h becoming light at night.

Tuesday October 23:

8-21 Degrees Celsius

Partly cloudy.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Light winds tending southwesterly at 10-25 km/h during the afternoon.

Wednesday October 24:

12-20 Degrees Celsius

Showers.

Chance of any rain:90%

Amount:2 to 8 mm.

Perth metropolitan area:

Partly to mostly cloudy.A very high(90%) chance of showers.The chance of a thunderstorm.Winds westerly at 10-20 km/h becoming southwesterly at 20-35 km/h during the day.

Thursday October 25:

9-22 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Winds south-southeasterly at 5-15 km/h tending southwesterly at 15-25 km/h during the afternoon.

Friday October 26:

10-22 Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:0 mm.

Perth metropolitan area:

Partly cloudy.Light winds tending southwesterly at 15-25 km/h during the day.

Saturday October 27:

12-23 Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:0 mm.

Perth metropolitan area:

Mostly sunny.Winds southeasterly at 10-20 km/h tending southwesterly at 15-25 km/h during the afternoon.

Charts:

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 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).

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.