7 day weather forecast

Effective as of 4:00 AM Sunday July 26

Explanatory notes:

The ECMWF 12Z has shifted drier and warmer compared to the ECMWF 00Z with steering at 850 hPa being more westerly compared to northerly during the afternoon.  I am going with the ECMWF 12Z given that it captures the position of the decaying cold front more accurately compared to the ECMWF 00Z (too far south).

On Monday, sunny morning with north-northeasterly flow before some clouds arrive in the early afternoon as winds shift north-northwesterly with showers from afternoon as a cold front moves through.

On Tuesday, plenty of stratocumulus clouds with moist southwesterly flow, slight chance of showers, whether or not showers occur depends on the height of the temperature inversion.

The rest of Sunday July 26:

City:

14-22 Degrees Celsius

Possible shower or two.

Chance of any rain:40%

Amount:N/A

Perth Metropolitan Area:

Partly cloudy.Fog possible early.A medium (60%) chance of showers in the north, a slight(30%) chance elsewhere.Light winds.

Monday July 27:

City:

12-24 Degrees Celsius

PM showers.

Chance of any rain:95%

Amount:2 to 6 mm

Perth Metropolitan Area:

Mostly sunny morning than a very high(95%) chance of showers from afternoon.Winds north-northeasterly at 15-25 km/h shifting northwesterly at 20-30 km/h from around the middle of the day.

Tuesday July 28:

City:

12-19 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A slight(30%) chance of showers.Light winds tending southwesterly at 10-20 km/h during the day.

Wednesday July 29:

City:

8-20 Degrees Celsius

Mostly sunny.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Light winds.

Thursday July 30:

City:

7-21 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

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

Friday July 31:

City:

10-20 Degrees Celsius

Possible shower.

Chance of any rain:30%

Amount:0 to 1 mm

Perth Metropolitan Area:

Partly cloudy.A slight(30%) chance of showers. Light winds tending south-southwesterly at 15-25 km/h during the day.

Saturday August 1:

City:

8-18 Degrees Celsius

Partly cloudy.

Chance of any rain:20%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.A slight(20%) chance of a shower. Winds southeasterly at 10-20 km/h.

Charts:

Figure 1.Surface synoptic chart at 00 UTC(8 AM local time today).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 today).Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image at 00 UTC(8 AM 
local time today).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).