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Perth Weather

Next 48hrs in Perth

Wed 29
9:00pm
Clear12°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 87%
Wind:  S 11km/h 
Thu 30
12:00am
Clear10°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 92%
Wind:  SSE 6km/h 
Thu 30
3:00am
Mostly clear8°CMostly clear
Rain: 5% (0.0mm/hr) 
Humidity: 92%
Wind:  ESE 6km/h 
Thu 30
6:00am
Mostly clear7°CMostly clear
Rain: 5% (0.0mm/hr) 
Humidity: 91%
Wind:  E 6km/h 
Thu 30
9:00am
Clear11°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 81%
Wind:  E 6km/h 
Thu 30
12:00pm
Clear18°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 55%
Wind:  E 4km/h 
Thu 30
3:00pm
Clear19°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 47%
Wind:  SSW 8km/h 
Thu 30
6:00pm
Clear15°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 68%
Wind:  SSW 8km/h 
Thu 30
9:00pm
Clear11°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 81%
Wind:  S 6km/h 
Fri 1
12:00am
Clear9°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 86%
Wind:  ESE 5km/h 
Fri 1
3:00am
Clear7°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 87%
Wind:  E 6km/h 
Fri 1
6:00am
Clear5°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 86%
Wind:  E 8km/h 
Fri 1
9:00am
Clear9°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 74%
Wind:  E 8km/h 
Fri 1
12:00pm
Clear17°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 47%
Wind:  E 12km/h 
Fri 1
3:00pm
Clear19°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 40%
Wind:  ESE 11km/h 
Fri 1
6:00pm
Clear14°CClear
Rain: 5% (0.0mm/hr) 
Humidity: 60%
Wind:  ESE 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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