7 day weather forecast

  Effective as of 4:00 PM Thursday May 20 2021

Explanatory notes:

Fine conditions with the subtropical high pressure ridge slightly to the south.

Slight smoke haze possible with prescribed burning activities..

The slight chance of fog early on Friday with light winds under mostly clear skies and early on Saturday but cloud cover most likely limiting fog development.

A prefrontal trough and cold front brings showers and possible thunderstorms on Saturday with a moist and unstable atmosphere.

A cold air unstable air mass behind the front leads to showers and the slight chance of thunderstorms depending on the depth of the instability. Showers likely clearing early next working week as the ridge of high pressure builds to the south.

The rest of Thursday May 20:

City:

Clear.

Chance of any rain:0%

Perth Metropolitan Area:

Clear.Possible smoke haze.Winds south-southwesterly at 10-20 km/h becoming southeasterly and light at night.

Friday May 21:

City:

9-24  Degrees Celsius

Partly cloudy.

Chance of any rain:0%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Possible smoke haze early.Light winds tending south-southwesterly at 10-20 km/h in the afternoon.​

Saturday May 22:

City:

12-22  Degrees Celsius

Showers increasing.

Chance of any rain:100%

Amount:8 to 20 mm

Perth Metropolitan Area:

Partly to mostly cloudy. A slight(30%) chance of showers in the morning increasing to a very high (100%) chance of showers from afternoon.The chance of a thunderstorm from afternoon.Light winds tending north-northeasterly at 10-20 km/h in the morning shifting northwesterly at 20-30 km/h from late morning shifting southwesterly at night.

Sunday May 23:

City:

10-18  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 southeasterly at 10-20 km/h becoming southwesterly at 15-25 kmh from afternoon.

Monday May 24:

City:

8-16  Degrees Celsius

Showers.

Chance of any rain:70%

Amount:2 to 6 mm

Perth Metropolitan Area:

Partly to mostly cloudy.A high (70%) chance of showers.Winds south-southwesterly at 15-25 km/h.

Tuesday May 25:

City:

6-18  Degrees Celsius

Partly cloudy.

Chance of any rain:10%

Amount:Nil

Perth Metropolitan Area:

Partly cloudy.Light winds.

Wednesday May 26:

City:

7-20  Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Winds east-northeasterly at 10-20 km/h.

Thursday May 27:

City:

9-22  Degrees Celsius

Mostly sunny.

Chance of any rain:5%

Amount:Nil

Perth Metropolitan Area:

Mostly sunny.Winds northeasterly at 20-30 km/h.

Charts:

                                   

Figure 1.Surface synoptic chart.Image courtesy of the Australian Bureau of Meteorology(BOM).

 2. 

Figure 2.Key features identified on True Colour RGB satellite image.Satellite image courtesy of the Japanese Meteorological Agency(JMA).

Figure 3.Mean Sea Level Pressure(MSLP) analysis with infrared greyscale satellite image. Image courtesy of the Australian Bureau of Meteorology(BOM)

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

No liabilities held from information consumed on this site. Weather icons are from the US National Weather Service.Some information on this site is from the Australian Bureau of Meteorology (BOM).