IDW13160
Australian Government Bureau of Meteorology
Western Australia

Great Southern District Forecast
Issued at 6:48 pm WST on Saturday 20 December 2025
for the period until midnight WST Wednesday 24 December 2025.

Warning Information
For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659
210* or listen for warnings on relevant TV and radio broadcasts.

Weather Situation
A ridge will develop across much of southern WA on Sunday, while a trough lies
across the Interior. A weak front will brush the south coast on Monday,
followed by the west coast trough returning by Tuesday.

Forecast for the rest of Saturday 20 December
Clear. Winds southerly 25 to 30 km/h turning southeasterly 15 to 25 km/h in the
evening.

Forecast for Sunday 21 December
Mostly sunny. Winds southeasterly 15 to 20 km/h becoming light in the morning
then becoming south to southeasterly 15 to 25 km/h in the early afternoon.
Overnight temperatures falling to around 8 with daytime temperatures reaching
the high 20s.

Katanning           Sunny.                          Min 9       Max 28  
Lake Grace          Cloud clearing.                 Min 9       Max 28  
Narrogin            Sunny.                          Min 9       Max 28  

Fire Danger: 
Roe: Moderate
Arthur: Moderate
Lakes: Moderate
Stirling North: Moderate
Stirling West: Moderate

Sun protection 7:40am to 4:30pm, UV Index predicted to reach 13 [Extreme]

Forecast for Monday 22 December
Mostly sunny. Winds southeasterly 15 to 20 km/h becoming light in the morning
then becoming southeasterly 25 to 35 km/h in the middle of the day. Overnight
temperatures falling to between 8 and 11 with daytime temperatures reaching 25
to 31.

Katanning           Partly cloudy.                  Min 11      Max 27  
Lake Grace          Sunny.                          Min 11      Max 29  
Narrogin            Sunny.                          Min 12      Max 29  

Forecast for Tuesday 23 December
Cloud clearing. Winds east to southeasterly 25 to 35 km/h. Overnight
temperatures falling to around 12 with daytime temperatures reaching the low
30s.

Katanning           Cloud clearing.                 Min 13      Max 31  
Lake Grace          Cloud clearing.                 Min 14      Max 32  
Narrogin            Mostly sunny.                   Min 14      Max 33  

Forecast for Wednesday 24 December
Sunny. Winds easterly 20 to 30 km/h. Overnight temperatures falling to between
10 and 14 with daytime temperatures reaching the low to mid 30s.

Katanning           Sunny.                          Min 12      Max 34  
Lake Grace          Sunny.                          Min 13      Max 34  
Narrogin            Sunny.                          Min 14      Max 35  

The next routine forecast will be issued at 1:30 am WST Sunday.

* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or
public phones.


Copyright Commonwealth of Australia 2011, Bureau of Meteorology (ABN 92 637 533
532).  Users of these web pages are deemed to have read and accepted the
conditions described in the Copyright, Disclaimer, and Privacy statements
(http://www.bom.gov.au/other/copyright.shtml).