Great Southern District

View the current warnings for Western Australia

Forecast issued at 4:44 pm WST on Tuesday 16 January 2018.

Weather Situation

A low pressure system lies off the Lower West coast and will weaken as it nears the coast tonight. A ridge of high pressure will develop along the south coast on Wednesday and Thursday, with a high pressure system moving into the Bight on Saturday. A surface trough will develop inland from the west coast on Friday and extend southwards on Saturday.

Forecast for the rest of Tuesday

Partly cloudy. Slight (30%) chance of a shower. The chance of a thunderstorm, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding. Winds north to northeasterly 20 to 30 km/h.

Wednesday 17 January

Cloudy. Medium (60%) chance of rain. The chance of a thunderstorm in the morning and afternoon. Winds north to northwesterly 15 to 25 km/h becoming northwesterly 20 to 30 km/h in the morning then shifting south to southwesterly 15 to 25 km/h in the afternoon. Overnight temperatures falling to between 19 and 22 with daytime temperatures reaching 26 to 36.

Fire Danger
Upper Great Southern: Low-Moderate
Roe: High
Beaufort: Low-Moderate
Lakes: High

Sun protection 8:00am to 4:30pm, UV Index predicted to reach 14 [Extreme]

7 day Town Forecasts

Precis Icon Location Min Max
Rain at times. Narrogin 21 27
Rain at times. Katanning 21 29
Possible morning storm. Rain. Lake Grace 22 32

Thursday 18 January

Cloudy. Medium (50%) chance of drizzle in the morning. Winds southerly 15 to 20 km/h turning southeasterly 15 to 25 km/h in the early afternoon. Overnight temperatures falling to between 15 and 18 with daytime temperatures reaching the low to mid 20s.

Friday 19 January

Cloud clearing. Winds east to southeasterly 15 to 25 km/h. Overnight temperatures falling to between 10 and 13 with daytime temperatures reaching the mid to high 20s.

Saturday 20 January

Mostly sunny. Winds easterly 15 to 20 km/h becoming light during the morning then becoming southeast to southwesterly 15 to 25 km/h during the evening. Overnight temperatures falling to between 12 and 15 with daytime temperatures reaching the low 30s.

The next routine forecast will be issued at 5:00 am WST Wednesday.

Product IDW13160