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Perth Weather

Next 48hrs in Perth

Thu 24
6:00pm
Slight chance shower20°CPossible shower
Rain: 44% (0.1mm/hr) 
Humidity: 72%
Wind:  SSW 14km/h 
Thu 24
9:00pm
Intermittent rain19°CPossible shower
Rain: 58% (0.2mm/hr) 
Humidity: 81%
Wind:  S 11km/h 
Fri 25
12:00am
Slight chance shower17°CPossible shower
Rain: 50% (0.2mm/hr) 
Humidity: 94%
Wind:  SW 7km/h 
Fri 25
3:00am
Cloudy16°CCloudy
Rain: 33% (0.3mm/hr) 
Humidity: 98%
Wind:  SW 7km/h 
Fri 25
6:00am
Slight chance shower14°CPossible shower
Rain: 47% (0.1mm/hr) 
Humidity: 100%
Wind:  SSW 7km/h 
Fri 25
9:00am
Mostly cloudy18°CMostly cloudy
Rain: 25% (0.1mm/hr) 
Humidity: 81%
Wind:  SSE 8km/h 
Fri 25
12:00pm
Intermittent rain23°CPossible shower
Rain: 59% (0.2mm/hr) 
Humidity: 54%
Wind:  SSE 8km/h 
Fri 25
3:00pm
Mostly clear26°CMostly clear
Rain: 20% (0.1mm/hr) 
Humidity: 44%
Wind:  SE 10km/h 
Fri 25
6:00pm
Mostly clear23°CMostly clear
Rain: 14% (0.1mm/hr) 
Humidity: 54%
Wind:  ESE 12km/h 
Fri 25
9:00pm
Mostly clear21°CMostly clear
Rain: 8% (1.0mm/hr) 
Humidity: 62%
Wind:  E 12km/h 
Sat 26
12:00am
Mostly clear19°CMostly clear
Rain: 22% (1.1mm/hr) 
Humidity: 74%
Wind:  E 15km/h 
Sat 26
3:00am
Mostly clear17°CMostly clear
Rain: 16% (0.6mm/hr) 
Humidity: 78%
Wind:  E 18km/h 
Sat 26
6:00am
Slight chance shower15°CPossible shower
Rain: 37% (0.3mm/hr) 
Humidity: 87%
Wind:  ENE 18km/h 
Sat 26
9:00am
Intermittent rain22°CPossible shower
Rain: 63% (0.5mm/hr) 
Humidity: 65%
Wind:  ENE 20km/h 
Sat 26
12:00pm
Heavy shower27°CHeavy shower
Rain: 71% (1.9mm/hr) 
Humidity: 51%
Wind:  NE 15km/h 
Sat 26
3:00pm
Heavy shower27°CHeavy shower
Rain: 87% (1.7mm/hr) 
Humidity: 57%
Wind:  NE 10km/h 
What is Opticast?

Opticast is an automated forecasting system designed to produce detailed forecasts for specific times of each day. The system works by taking forecasts from a range of computer models and comparing them with past observations to produce the most accurate possible forecast possible, tailored to a specific location where weather observations are taken.

Opticast allows you to 'drill-down' into the daily forecast, giving you a more exact idea of your local conditions at particular times of interest to you. For example, if you cycle to work you are likely to be most interested in the temperature, wind and chance of rain at 6am and 9pm. Or if you're organising an afternoon party and the daily forecast is for late thunder, you'll want to know what time the bad weather is likely to arrive.

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