Forecast issued at 4:25 pm WST on Tuesday 17 January 2017.
A deepening trough lies near the west coast, moving eastwards late Wednesday and into Thursday. A new ridge develops over the southern parts during Thursday before a new trough develops near the west coast over the weekend.
Forecast for the rest of Tuesday
Clear. Winds southeast to southwesterly 25 to 35 km/h tending east to southeasterly in the late evening.
Wednesday 18 January
Becoming cloudy. Slight (20%) chance of a shower inland, near zero chance elsewhere. Winds easterly 25 to 40 km/h shifting southwesterly 20 to 30 km/h in the early afternoon. Overnight temperatures falling to between 15 and 18 with daytime temperatures reaching 29 to 34.
- Fire Danger
- Lower West Coast: High
- Lower West Inland: High
Sun protection 8:10am to 4:50pm, UV Index predicted to reach 16 [Extreme]
Thursday 19 January
Partly cloudy. Winds south to southwesterly 25 to 35 km/h. Overnight temperatures falling to between 13 and 16 with daytime temperatures reaching the mid to high 20s.
Friday 20 January
Sunny. Winds south to southeasterly 15 to 20 km/h tending east to southeasterly during the morning then tending southeast to southwesterly 20 to 30 km/h during the day. Overnight temperatures falling to between 13 and 16 with daytime temperatures reaching 28 to 33.
Saturday 21 January
Very hot and sunny. Winds easterly 15 to 20 km/h shifting southwesterly 20 to 30 km/h during the morning then tending southerly 15 to 25 km/h during the evening. Overnight temperatures falling to between 15 and 19 with daytime temperatures reaching 31 to 38.
The next routine forecast will be issued at 5:00 am WST Wednesday.