Firies On High Alert As Parts Of NSW Set To Hit 40C

The weather bureau is forecasting very-high fire danger for nine parts of NSW and the ACT, including the far-north where temperatures could reach 40 degrees.

While Sydney's top temperature is expected to reach a mild 23 degrees on Sunday, Bourke and Brewarrina will brace for their first 40-degree day since March.

Wilcannia, Cobar and Dubbo are also expected to exceed 37 degrees while possible dust is forecast for most parts west of Griffith and Bourke.

The Bureau of Meteorology has warned the fire danger ratings in almost every NSW/ACT region is high or very high for Sunday.

"Current forecasts suggest above-average heat is likely to build or extend to a number of areas through Sunday and Monday," a BoM spokesman said late on Saturday.

"Conditions between now and Tuesday are being closely monitored, especially with school holidays and the long weekend underway."

READ MORE: Residents Told To Take Shelter As Out-Of-Control Fire Burns In Sydney's West

Very high fire danger is forecast in Canberra and eight NSW regions: Greater Hunter, Central Ranges, Southern Ranges, Lower Central West Plains, Far Western, New England, Northern Slopes and North Western.

All other areas except the Eastern Riverina region have a high fire danger rating.

No areas are subject to total fire bans.

Since July 1, more than 4,000 bush and grass fires have ignited and 44 homes have been destroyed in NSW.